CN105573393B - Integrated circuit and its current correction method and electronic installation - Google Patents
Integrated circuit and its current correction method and electronic installation Download PDFInfo
- Publication number
- CN105573393B CN105573393B CN201410631926.0A CN201410631926A CN105573393B CN 105573393 B CN105573393 B CN 105573393B CN 201410631926 A CN201410631926 A CN 201410631926A CN 105573393 B CN105573393 B CN 105573393B
- Authority
- CN
- China
- Prior art keywords
- switch
- current
- pin
- electrically connected
- mode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electronic Switches (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
The present invention relates to a kind of integrated circuit and its current correction method and electronic installation.The integrated circuit includes pin, current generator and driver.Current generator produces reference current according to control signal.Driver includes current source, and is electrically connected to pin and current generator.Integrated circuit has first mode and second mode.In the flrst mode, driver turns on current source and pin, so that the driving current that current source is produced flows through pin.Under the second mode, driver turn-off current source and pin, and current generator and pin are turned on, to cause reference current to flow through pin.
Description
Technical field
The invention relates to a kind of circuit and its bearing calibration and using its electronic installation, and in particular to
A kind of integrated circuit is with its current correction method and using its electronic installation.
Background technology
With the Fast Growth of science and technology, integrated circuit (Integrated circuit, abbreviation IC) has been widely used in
In various electronic installations.In general, in the normal mode, existing integrated circuit can provide driving current, example by driver
Such as the transmission end of specific interface standard, driving current of the output containing data information to corresponding receiving terminal.Described
Driving current obtains predetermined current value after amplifying specific factor usually in accordance with the reference current in integrated circuit, to meet spy
Determine the specification of interface standard.And under correction mode, existing integrated circuit can still pass through the drive produced by identical driver
Streaming current is corrected to the reference current in electronic installation, and with other circuit modules for integrated circuit according to described
Reference current as the benchmark for producing electric current needed for the running of each circuit.However, the drive produced by driver in integrated circuit
Streaming current is often easier to be subject to the multiple for amplifying reference current excessive and the trickle non-ideal effects by reference current in itself
It is greatly enlarged in the lump or produce the influence of error in the fabrication process because of integrated circuit, and then cause electronic installation using driving
Streaming current cannot effectively in correcting integrated circuit reference current.In other words, under correction mode, existing integrated circuit is still
It is that may carry the driving current of error produced by driver to transmit through its pin as being referred in adjustment integrated circuit
The benchmark of electric current, and then cause the reduction of its accuracy of the internal reference current in correction.
The content of the invention
The present invention provides a kind of integrated circuit, current correction method and electronic installation, can in different modes through integrated
The same pin of circuit transmits different electric currents, thereby to improve accuracy of the reference current in correction in integrated circuit.
Integrated circuit of the invention, including pin, current generator and driver.Current generator is produced according to control signal
Raw reference current.Driver includes current source, and is electrically connected to pin and current generator.Integrated circuit has first mode
With second mode.In the flrst mode, driver turns on current source and pin, so that the driving current that current source is produced is flowed through
Pin.Under the second mode, driver turn-off current source and pin, and current generator and pin are turned on, to cause reference
Electric current flows through pin.
In one embodiment of this invention, above-mentioned driver further includes first switch and second switch.First switch
First end is electrically connected with pin, and the second end of first switch is electrically connected with current source.The first end of second switch is electrically connected with
Pin, and the second end of second switch is electrically connected with current generator.In the flrst mode, driver turns on first switch and breaks
Second switch is opened, and under the second mode, driver conducting second switch simultaneously disconnects first switch.
Current correction method of the invention, it is adaptable to integrated circuit, and comprise the following steps.Produced according to a control signal
One reference current.Switch the mode of operation of integrated circuit to first mode or second mode.In the flrst mode, turn on integrated
The pin of current source and integrated circuit in circuit, to cause the driving current produced by the current source to flow through pin.Second
Under pattern, turn-off current source and pin, transmission reference current to cause reference current to flow through the pin of integrated circuit, and using stream
Control signal is adjusted through the reference current of pin.
Electronic installation of the invention includes integrated circuit and controller.Integrated circuit has first mode and second mode,
And including pin, current generator and driver.Current generator produces reference current according to control signal.Driver includes electricity
Stream source, and it is electrically connected to pin and current generator.In the flrst mode, driver turns on current source and pin, so that
The driving current that current source is produced flows through pin.Under the second mode, driver turn-off current source and pin, and electric current is produced
Device is turned on pin, to cause reference current to flow through pin.Controller produces control signal, and electric using the reference for flowing through pin
Stream adjustment control signal.
Based on above-mentioned, integrated circuit of the invention in the flrst mode can lead the current source in driver with a pin
It is logical, and reference current can be transmitted using the pin under the second mode.Thereby, control letter can be adjusted using reference current
Number, such that it is able to lift accuracy of the reference current in correction.
It is that features described above of the invention and advantage can be become apparent, special embodiment below, and it is detailed to coordinate accompanying drawing to make
Carefully it is described as follows.
Brief description of the drawings
Fig. 1 is the schematic diagram according to the electronic installation of one embodiment of the invention.
Fig. 2 is the flow chart according to the current correction method of one embodiment of the invention.
Fig. 3 is the schematic diagram according to the electronic installation of another embodiment of the present invention.
The schematic diagram of the electronic installation of Fig. 4 foundation further embodiment of this invention.
Fig. 5 is the flow chart according to the current correction method of another embodiment of the present invention.
Symbol description
10、30、40：Electronic installation
11、31：Controller
12、32：Terminal resistance
100、300：Integrated circuit
110、310：Pin
120、320：Current generator
121、321：Variable resistor
122、322：Current mirror
130、330：Driver
131、331：Current source
132、332：First switch
133、333：Second switch
134：3rd switch
135：Resistance
S1、S3：Control signal
I1、I3：Reference current
R11、R12、R31、R32、R41、R42：Dead resistance
S211, S212, S220~S270, S231, S232, S251, S252, S271, S510~S550, S551：Fig. 2 and figure
Step in 5 flow chart
41：Operation switch
42：Terminal resistance
Specific embodiment
Fig. 1 is the schematic diagram according to the electronic installation of one embodiment of the invention.As shown in figure 1, electronic installation 10 includes collection
Into circuit 100, controller 11 and terminal resistance 12.Wherein, terminal resistance 12 first end be electrically connected with controller 11 with it is integrated
The pin 110 of circuit 100, and the second end of terminal resistance 12 is electrically connected to earth terminal.Additionally, controller 11 may be used to produce
Control signal S1.Furthermore, integrated circuit 100 includes pin 110, current generator 120 and driver 130.Wherein, electric current is produced
Device 120 can produce reference current I1 according to the control signal S1 produced by controller 11.Driver 130 includes current source 131,
The driver 130 is simultaneously electrically connected to pin 110 and current generator 120.
The mode of operation of integrated circuit 100 has first mode (for example, normal mode) with second mode (for example, correction
Pattern).In the flrst mode, driver 130 can turn on current source 131 with pin 110.Thereby, integrated circuit 100 can be saturating
Device 130 of overdriving provides the driving current for meeting an interface standard.For example, integrated circuit 100 can be for example and apply logical
With in universal serial bus (Universal Serial Bus, abbreviation USB) interface, and terminal resistance 12 can be for example and meet USB Jie
The characteristic impedance of face standard.Additionally, when integrated circuit 100 operates on first mode, driver 130 is by permeable pin 110
Transmission meets the driving current of USB interface standard, to cause driving current to flow through terminal resistance 12.
On the other hand, under the second mode, the meeting turn-off current of driver 130 source 131 and pin 110, and transmit electric current product
Reference current I1 produced by raw device 120, to cause reference current I1 to flow through pin 110.Thereby, reference current I1 will can transmit
To terminal resistance 12, and then voltage is formed on terminal resistance 12.Thereby, controller 11 will can detect on terminal resistance 12
Adapt to the voltage that reference current I1 is formed.Additionally, controller 11 understands the voltage detected by adjust control signal S1,
And the further reference current I1 produced by feedback control electric current generator 120.
In other words, under the second mode, integrated circuit 100 can pass through the transmission of pin 110 and be produced from current generator 120
Raw reference current I1, rather than the driving current that driver 130 is produced, and then controller 11 is caused using flowing through pin 110
Reference current I1 adjust control signal S1.It is noted that integrated circuit 100 can be with produced by current generator 120
Reference current I1 on the basis of map out the electric current needed for remaining inner member.For example, driver 130 can be according to specific times
Count the driving current to amplify reference current I1 to produce required.In other words, the reference current produced by current generator 120
I1 is relatively smaller.Therefore, with remaining internal current (for example, driving current) in integrated circuit 100 in comparison, with reference to electricity
It is also smaller that stream I1 mismatches the formed margin of error in response to layout.Therefore, when working under the second mode, with current generator
Reference current produced by 120 is supplied to controller 11, and controller 11 will can be caused to come on the basis of the minimum voltage of the margin of error
Current correction is carried out, so as to cause controller 11 more effectively can adjust control signal S1 according to more accurately voltage.
Further to seeing, current generator 120 includes variable resistor 121 and current mirror 122.Wherein, current mirror 122
Input is electrically connected with variable resistor 121, and the output end of current mirror 122 is electrically connected with driver 130.Additionally, driver 130
Also include first switch 132, the switch of second switch the 133, the 3rd 134 and resistance 135.Wherein, the first end electricity of first switch 132
Property be connected to pin 110, and the second end of first switch 132 is electrically connected with current source 131.The first end electricity of second switch 133
Property be connected to pin 110, and the second end of second switch 133 is electrically connected with current generator 120.The first of 3rd switch 134
End is electrically connected with the first end of first switch 132.The first end of resistance 135 is electrically connected with the second end of the 3rd switch 134, and electricity
Second end of resistance 135 is electrically connected to earth terminal.Additionally, current source 131 is electrically connected at the of power end and first switch 132
Between two ends.
Fig. 2 is the flow chart according to the current correction method of one embodiment of the invention, below referring to Fig. 1 and Fig. 2
From the point of view of electronic installation integrated operation.As shown in step S211, current generator 120 can produce reference according to control signal S1
Electric current I1.For example, current generator 120 can adjust the resistance value of variable resistor 121 according to control signal S1.Additionally, current mirror
122 can produce reference current I1 in response to the resistance value of variable resistor 121, and current mirror 122 can replicate reference current I1 with
Causing driver 130 can receive corresponding reference current I1.Furthermore, as shown in step S212, the Working mould of integrated circuit 100
Formula has first mode (for example, normal mode) and second mode (for example, correction mode).
In the flrst mode, as shown in step S220, driver 130 can amplify reference current I1, to produce driving current.
For example, driver 130 can amplify reference current I1 with a specific factor, and driving current is mapped out through current source 131.This
Outward, as shown in step S230, driver 130 can turn on current source 131 with pin 110.With regard to step S230 thin portion step and
Speech, as shown in step S231, driver 130 can turn on (turn on) first switch 132 and be not turned in the flrst mode
(turn off) second switch 133.Additionally, as shown in step S232, driver 130 can be switched in conducting the 3rd in the flrst mode
134, to cause resistance 135 parallel with one another with terminal resistance 12.Thereby, as shown in step S240, integrated circuit 100 will be transmittable
Meet the driving current an of interface standard (for example, USB interface standard), to cause driving current to flow through pin 110.
On the other hand, under the second mode, as shown in step S250, driver 130 can turn-off current source 131 and pin
110, and transmit the reference current I1 produced by current generator 120.For the thin portion step of step S250, such as step S251
Shown, driver 130 can turn on second switch 133 and disconnect first switch 132 under the second mode.Additionally, such as step S252
Shown, driver 130 can under the second mode be not turned on the 3rd switch 134.Thereby, as shown in step S260, integrated circuit 100
By the reference current I1 produced by transmittable current generator 120, to cause reference current I1 to flow through pin 110.Due to now
3rd switch 134 is not turned on simultaneously, and the reference current I1 that resistance 135 pairs can be avoided to flow through is impacted.Consequently, it is possible to such as step
Shown in S270, electronic installation 10 will can adjust control signal S1 using the reference current I1 for flowing through pin 110.With regard to step S270
Thin portion step for, as shown in step S271, controller 11 will can detect the voltage in terminal resistance 12, and be tied according to detection
Fruit adjusts control signal S1.
In other words, in the flrst mode, integrated circuit 100 can pass through pin 110 to transmit the drive that driver 130 is supplied
Streaming current.Additionally, under the second mode, integrated circuit 100 can pass through pin 110 to transmit produced by current generator 120
Reference current I1.Thereby, controller 11 will can adjust control signal S1 according to the voltage formed by reference current I1, go forward side by side
Reference current I1 produced by one step ground feedback control electric current generator 120, make reference current I1 can be adjusted to it is predetermined
Current value is consistent.Consequently, it is possible to the accuracy that will can lift reference current I1, and cause all to join in the middle of integrated circuit 100
The inner member (such as driver 130 or other circuit modules) of current value needed for producing on the basis of electric current I1 is examined, school is referred to
Reference current I1 after just and each generate accurate electric current according to required enlargement ratio.Additionally, under the second mode, it is integrated
Circuit 100 also can pass through the 3rd switch 134 be not turned on detected avoiding the margin of error of resistance 135 from having influence on controller 11
The voltage for arriving, and then can further lift accuracy of the reference current I1 in correction.
It is noted that although the controller 11 that Fig. 1 is enumerated is provided in the outside of integrated circuit 100, it is not
It is used to limit the present invention.For example, in another embodiment, controller 11 also can be for example the inside for being arranged on integrated circuit 100.
Additionally, the flow shown in Fig. 2 is each step for being set forth in different mode, but it is not used to limit the priority of each step
Sequentially.For example, step S231 in Fig. 2 and step S232 is without specific sequencing, and step S251 and step S252 also without
Specific sequencing, and the visual design of above-mentioned steps does appropriate adjustment.In addition, when integrated circuit 100 is operated in
When under two modes, in addition to avoiding driving current to disconnect first switch 132 and being transferred to pin 110, in another embodiment
Can then be reached using the power end for closing current source 131, the mode that substitution sets first switch 132.
Additionally, the integrated circuit 100 cited by Fig. 1 is mainly applied in USB interface, but it is not limited to this hair
It is bright.For example, one skilled in the art also can mutually exchange the power end in Fig. 1 and earth terminal, and selectively
Ground removes the 3rd switch 134 and resistance 135 in Fig. 1, to cause integrated circuit to can be applicable to high-resolution multimedia interface
In (High-Definition Multimedia Interface, abbreviation HDMI).Additionally, with the 3rd switch 134 and resistance
135 removal, one skilled in the art also can accordingly remove the step S232 and step S252 in Fig. 2, with thereby
Illustrate to apply the integrated circuit in high-resolution multimedia interface.
For example, Fig. 3 is the schematic diagram according to the electronic installation of another embodiment of the present invention.As shown in figure 3, electronics is filled
Putting 30 includes integrated circuit 300, controller 31 and terminal resistance 32, and integrated circuit 300 includes pin 310, current generator
320 with driver 330.Additionally, current generator 320 includes variable resistor 321 and current mirror 322.Driver 330 includes electric current
Source 331, first switch 332 and second switch 333.
With Fig. 1 embodiments similarly, the input electric connection variable resistor 321 of current mirror 322, and current mirror 322
Output end is electrically connected with driver 330.Additionally, the first end of first switch 332 is electrically connected to pin 310, and first switch
332 the second end is electrically connected with current source 331.The first end of second switch 333 is electrically connected to pin 310, and second switch
333 the second end is electrically connected with current generator 320.
Further to seeing, in Fig. 3 embodiments, one end of variable resistor 321 is electrically connected with power end, and current mirror
322 are more electrically connected to earth terminal.Additionally, current source 331 be electrically connected at earth terminal and first switch 332 the second end it
Between.Operationally, current generator 320 can adjust the resistance value of variable resistor 321 according to control signal S3.The meeting of current mirror 322
Reference current I3 is produced in response to the resistance value of variable resistor 321, and reference current I3 is replicated.Furthermore, integrated electricity
The mode of operation on road 300 has first mode (for example, normal mode) and second mode (for example, correction mode).
In the flrst mode, driver 330 can turn on first switch 332 and disconnect second switch 333.Thereby, from end
Hold the electric current of resistance 32 that permeable pin 310 is flowed into driver 330, and the electric current for being flowed into will be equal to the institute of driver 330
The driving current of generation.Under the second mode, driver 330 can turn on second switch 333 and disconnect first switch 332.Thereby,
Driver 330 can cause reference current I3 to flow through pin 310 under the second mode.Consequently, it is possible to controller 31 can foundation
The voltage that is formed by reference current I3 adjusts control signal S3, and further feedback control electric current generator 320 is produced
Raw reference current I3.Thereby, accuracy of the reference current I3 in correction can will be lifted.As for each element of Fig. 3 embodiments
Thin portion operation be included in the various embodiments described above, therefore will not be described here.
It is worth noting that, the connection cabling in electronic installation between each element can produce into dead resistance, for example, Fig. 1 is electric
Dead resistance R31 and R32 in dead resistance R11 and R12 and electronic installation 30 in sub-device 10.In order to further
Accuracy of the reference current of integrated circuit in correction is lifted, the electronic installation 10 and 30 cited by the various embodiments described above more may be used
It is extra to set an Operation switch with a terminal resistance to reduce influence of the dead resistance to reference current in correction.
For example, Fig. 4 is the schematic diagram according to the electronic installation of further embodiment of this invention.Wherein, cited by Fig. 4
Electronic installation 50 is similar to the electronic installation 10 cited by Fig. 1.Additionally, Fig. 4 and Fig. 1 embodiments main difference part is, Fig. 4
Electronic installation 40 also include Operation switch 41 and terminal resistance 42.Specifically, the first end of Operation switch 41 is electrically connected with
The pin 110 of integrated circuit 100, the second end of Operation switch 41 is electrically connected with terminal resistance 42 (equivalent to first terminal electricity
Resistance), and the 3rd end of Operation switch 41 is electrically connected with terminal resistance 12 (equivalent to second terminal resistance).Wherein, terminal resistance
42 are more than terminal resistance 12.
In a preferred embodiment, the resistance value of terminal resistance 42 is more than more than the resistance value several times of terminal resistance 12, with
During so that controller 11 detecting the voltage formed in response to reference current I1 on terminal resistance 12, dead resistance is produced to voltage
Raw influence can be lowered.Additionally, as it was previously stated, reference current I1 generally smaller (such as much smaller than driving current), therefore,
Larger voltage can be produced by the terminal resistance 52 of a larger resistance value in the present embodiment, be conducive to controller 11 to detect.
Additionally, Fig. 4 also shows the dead resistance R41 and R42 of the connection cabling generation that Operation switch 41 is connected.
Fig. 5 is the flow chart according to the current correction method of another embodiment of the present invention.Wherein, with the flow shown in Fig. 2
In comparison, Fig. 5 also lists out the Operation switch 41 of Fig. 4 each step in different modes to figure.As shown in step S510,
Under first mode, with the 3rd end can be electrical connected the first end of Operation switch 41 by electronic installation 40, to cause pin 110 with end
End resistance 12 is turned on.Thereby, as shown in step S520, integrated circuit 100 by transmittable driving current, to cause driving current stream
Through pin 110 and terminal resistance 12 (equivalent to second terminal resistance).It is noted that the flow shown in Fig. 5 is to arrange
Each step in different mode is lifted, but is not used to limit the sequencing of each step.For example, step S231 in Fig. 5,
Step S232 and step S510 is without specific sequencing, and the visual design of above-mentioned steps does appropriate adjustment.
On the other hand, as shown in step S530, electronic installation 40 can be electrical with the second end by the first end of Operation switch 41
It is connected, will be turned on terminal resistance 42 with the pin 110 for causing integrated circuit 100.Thereby, as shown in step S540, integrated electricity
Transmittable reference current I1 is caused reference current I1 to flow through pin 110 with terminal resistance 42 (equivalent to first by road 100
Terminal resistance).Wherein, in Fig. 5 step S251, step S252 and step S530 are without specific sequencing, and above-mentioned steps
Visual design does appropriate adjustment.Consequently, it is possible to as shown in step S550, electronic installation 50 will be using flowing through pin
110 reference current I1 adjusts control signal S1.For the thin portion step of step S550, as shown in step S551, control
Device 11 can detect the voltage in terminal resistance 42 (equivalent to first terminal resistance), and adjust control signal according to testing result
S1。
In other words, under the second mode, controller 11 can adjust control according to the voltage formed by reference current I1
Signal S1, therefore accuracy of the reference current I1 in correction can be lifted.In addition, under the second mode, electronic installation 40 is more
Terminal resistance 42 is switched to through Operation switch 41.Because terminal resistance 42 is more than terminal resistance 12, therefore connection can be reduced
The influence of dead resistance R11, R41 and R42 produced by cabling to the voltage detected by controller 11, and then can more enter one
Accuracy of the lifting reference current I1 in step ground in correction.Thin portion operation as each element of Fig. 4 embodiments has been included in
In stating each embodiment, therefore will not be described here.
In sum, integrated circuit of the invention can pass through the drive that pin transmission driver is supplied in the flrst mode
Streaming current, and reference current can be transmitted using the pin under the second mode.Thereby, controller can be according to by reference current institute
The voltage of formation adjusts control signal, and further feedback control reference current.Consequently, it is possible to reference current can be lifted
Accuracy in correction.
Although the present invention is disclosed as above with embodiment, so it is not limited to the present invention, any art
Middle tool usually intellectual, it is without departing from the spirit and scope of the present invention, therefore of the invention when a little change and retouching can be made
Protection domain be defined when being defined by tbe claims.
Claims (19)
1. a kind of integrated circuit, including：
One pin；
One current generator, a reference current is produced according to a control signal；And
One driver, including a current source, and the pin and the current generator are electrically connected with, the wherein integrated circuit has one
First mode and a second mode, in the first mode, the driver turns on the current source and the pin, so that the electric current
The driving current that source produces flows through the pin, and in this second mode, the driver disconnect the current source and the pin and
The current generator and the pin are turned on, to cause the reference current to flow through the pin,
Wherein the current generator includes variable resistor, and the wherein current generator adjusts the variable resistor according to the control signal
Resistance value.
2. integrated circuit as claimed in claim 1, it is characterised in that the driver also includes：
One first switch, its first end is electrically connected with the pin, and the second end of the first switch is electrically connected with the current source；And
One second switch, its first end is electrically connected with the pin, and the second end of the second switch is electrically connected with the current generator,
Wherein in the first mode, the driver turns on the first switch and disconnects the second switch, and in the second mode
Under, the driver turns on the second switch and disconnects the first switch.
3. integrated circuit as claimed in claim 2, it is characterised in that the driver also includes：
One the 3rd switch, its first end is electrically connected with the first end of the first switch, wherein in the first mode, the driver
The 3rd switch is turned on, and in this second mode, the driver is not turned on the 3rd switch；And
One resistance, its first end is electrically connected with the second end of the 3rd switch, and the second end of the resistance is electrically connected to a ground connection
End, wherein the current source is electrically connected between a power end and the second end of the first switch.
4. integrated circuit as claimed in claim 1, it is characterised in that the current generator also includes：
One current mirror, its input is electrically connected with the variable resistor, and the output end of the current mirror is electrically connected with the driver, the electricity
Stream mirror produces the reference current in response to the resistance value of the variable resistor.
5. integrated circuit as claimed in claim 1, it is characterised in that the integrated circuit is applied to an electronic installation, and the electricity
Sub-device includes being used to the controller for producing the control signal and the terminal resistance for being electrically connected to the pin, wherein at this
Under second mode, the controller detects the voltage in the terminal resistance, and adjusts the control signal according to testing result, and according to
The control signal adjusts the reference current of the current generator.
6. integrated circuit as claimed in claim 1, it is characterised in that the integrated circuit is applied to an electronic installation, the electronics
Device includes an Operation switch and the controller for being used to produce the control signal, and the first end of the Operation switch is electrically connected with should
The pin of integrated circuit, the second end of the Operation switch is electrically connected with a first terminal resistance, wherein in this second mode,
With the second end be electrical connected the first end of the Operation switch by the electronic installation, and controller detection is in the first terminal resistance
Voltage, and adjust the control signal according to testing result, and the reference of the current generator is adjusted according to the control signal
Electric current.
7. integrated circuit as claimed in claim 6, it is characterised in that the 3rd end of the Operation switch is electrically connected with one second eventually
End resistance, the first terminal resistance is more than the second terminal resistance, and in the first mode, the electronic installation opens the operation
The first end of pass is electrical connected with the 3rd end.
8. a kind of current correction method a, it is adaptable to integrated circuit, and the current correction method includes：
A reference current is produced according to a control signal；
Switch the mode of operation of the integrated circuit a to first mode or a second mode；
In the first mode, a pin of the current source and the integrated circuit in the integrated circuit is turned on, to cause the electricity
A driving current produced by stream source flows through the pin；And
In this second mode, the current source and the pin are disconnected, transmits the reference current to cause the reference current to flow through this
Pin, and adjust the control signal using the reference current for flowing through the pin.
9. current correction method as claimed in claim 8, it is characterised in that the integrated circuit includes a first switch with one the
Two switches, and in the first mode, the step that the pin of the current source in the integrated circuit and the integrated circuit is turned on
Suddenly include：
Turn on the first switch and disconnect the second switch, the first end of the wherein first switch is electrically connected with the integrated circuit
The pin, the second end of the first switch is electrically connected with the current source, and the first end of the second switch is electrically connected with the integrated electricity
The pin on road, the second end of the second switch is electrically connected with a current generator of the integrated circuit.
10. current correction method as claimed in claim 9, it is characterised in that in this second mode, disconnect the current source with
The pin, includes the step of transmit the reference current to cause the reference current to flow through the pin of the integrated circuit：
Turn on the second switch and disconnect the first switch.
11. current correction methods as claimed in claim 10, it is characterised in that the integrated circuit also includes a resistance and one the
Three switch, and the current correction method also includes：
In the first mode, the 3rd switch is turned on, wherein the resistance and the 3rd switch are connected on the of the first switch
Between one end and an earth terminal；And
In this second mode, it is not turned on the 3rd switch.
12. current correction methods as claimed in claim 8, it is characterised in that the pin of the integrated circuit is electrically connected with one
Terminal resistance, and include using the step of flowing through the reference current of the pin to adjust the control signal：
The voltage in the terminal resistance is detected, and the control signal is adjusted according to testing result.
13. current correction methods as claimed in claim 8, it is characterised in that the integrated circuit is electrically connected with through the pin
One Operation switch, and the current correction method also includes：
In this second mode, the first end of the Operation switch is electrical connected with the second end, wherein the first of the Operation switch
End is electrically connected with the pin of the integrated circuit, and the second end of the Operation switch is electrically connected with a first terminal resistance；And
In the first mode, the first end of the Operation switch is electrical connected with the 3rd end, wherein the 3rd of the Operation switch
End is electrically connected with a second terminal resistance, and the wherein first terminal resistance is more than the second terminal resistance.
14. current correction methods as claimed in claim 13, it is characterised in that using the reference current from the pin come
The step of adjusting the control signal includes：
The voltage in the first terminal resistance is detected, and the control signal is adjusted according to testing result.
A kind of 15. electronic installations, including：
One integrated circuit, with a first mode and a second mode, and including：
One pin；
One current generator, a reference current is produced according to a control signal；And
One driver, including a current source, and the pin and the current generator are electrically connected with, wherein in the first mode,
The driver turns on the current source and the pin, so that the driving current that the current source is produced flows through the pin, and at this
Under second mode, the driver disconnects the current source and is turned on the pin and by the current generator and the pin, to cause this
Reference current flows through the pin；And
One controller, produces the control signal, and adjusts the control signal using the reference current for flowing through the pin,
Wherein the current generator includes variable resistor, and the wherein current generator adjusts the variable resistor according to the control signal
Resistance value.
16. electronic installations as claimed in claim 15, it is characterised in that the driver also includes：
One first switch, its first end is electrically connected with the pin, and the second end of the first switch is electrically connected with the current source；And
One second switch, its first end is electrically connected with the pin, and the second end of the second switch is electrically connected with the current generator,
Wherein in the first mode, the driver turns on the first switch and disconnects the second switch, and in the second mode
Under, the driver turns on the second switch and disconnects the first switch.
17. electronic installations as claimed in claim 16, it is characterised in that the driver also includes：
One the 3rd switch, its first end is electrically connected with the first end of the first switch, wherein in the first mode, the driver
The 3rd switch is turned on, and in this second mode, the driver is not turned on the 3rd switch；And
One resistance, its first end is electrically connected with the second end of the 3rd switch, and the second end of the resistance is electrically connected to a ground connection
End, wherein the current source is electrically connected between a power end and the second end of the first switch.
18. electronic installations as claimed in claim 15, it is characterised in that also include：
One terminal resistance, is electrically connected with the pin of the integrated circuit, and the wherein controller detects the voltage in the terminal resistance,
And adjust the control signal according to testing result.
19. electronic installations as claimed in claim 15, it is characterised in that also include：
One Operation switch, its first end is electrically connected with the pin of the integrated circuit；
One first terminal resistance, is electrically connected between the second end of the Operation switch and an earth terminal；And
One second terminal resistance, is electrically connected between the 3rd end of the Operation switch and the earth terminal, and first terminal electricity
Resistance is more than the second terminal resistance,
Wherein, in this second mode, with the second end be electrical connected the first end of the Operation switch by the electronic installation, and the control
Device processed detects the voltage in the first terminal resistance, and adjusts the control signal according to testing result, and in the first mode,
With the 3rd end be electrical connected the first end of the Operation switch by the electronic installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631926.0A CN105573393B (en) | 2014-11-11 | 2014-11-11 | Integrated circuit and its current correction method and electronic installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410631926.0A CN105573393B (en) | 2014-11-11 | 2014-11-11 | Integrated circuit and its current correction method and electronic installation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105573393A CN105573393A (en) | 2016-05-11 |
| CN105573393B true CN105573393B (en) | 2017-06-27 |
Family
ID=55883645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410631926.0A Active CN105573393B (en) | 2014-11-11 | 2014-11-11 | Integrated circuit and its current correction method and electronic installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105573393B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632656A (en) * | 2016-07-19 | 2018-01-26 | 扬智科技股份有限公司 | Integrated circuit structure |
| CN114203570A (en) * | 2020-09-18 | 2022-03-18 | 深圳英集芯科技股份有限公司 | Calibration method of IC chip, related system and device |
| CN112531636B (en) * | 2020-12-02 | 2023-02-28 | 广东美的白色家电技术创新中心有限公司 | Overcurrent protection circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7400128B2 (en) * | 2005-09-07 | 2008-07-15 | Texas Instruments Incorporated | Current-mode bandgap reference voltage variation compensation |
| JP2008146568A (en) * | 2006-12-13 | 2008-06-26 | Matsushita Electric Ind Co Ltd | Current driving device and display |
| CN101674696B (en) * | 2008-09-10 | 2013-01-09 | 三洋电机株式会社 | Light-emitting element driving circuit |
| TWI461959B (en) * | 2012-04-26 | 2014-11-21 | Issc Technologies Corp | Output and input interface apparatus |
| CN103595271B (en) * | 2012-08-14 | 2017-09-29 | 通嘉科技股份有限公司 | Active control feedback integrated circuit and method applied to converter converting AC into DC |
-
2014
- 2014-11-11 CN CN201410631926.0A patent/CN105573393B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105573393A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102014017B (en) | Signal detection circuit, method and system | |
| CN104078939B (en) | Power inverter, short-circuit protection circuit and control method | |
| CN103384216B (en) | Transmitter circuit and its operational approach | |
| KR101759340B1 (en) | Serdes voltage-mode driver with skew correction | |
| US20120161816A1 (en) | Voltage-mode driver with pre-emphasis | |
| CN105573393B (en) | Integrated circuit and its current correction method and electronic installation | |
| US9178418B2 (en) | Pre-emphasis circuit | |
| TWI528713B (en) | Transmission line driver circuit for automatically calibrating impedance matching | |
| CN110930914A (en) | Signal detection circuit, signal detection method and display device | |
| CN104836548B (en) | The input circuit that the Duty Cycle Distortion of input signal can be compensated | |
| US7061266B2 (en) | Methods and apparatus for improving impedance tolerance of on-die termination elements | |
| Choi et al. | An FFE transmitter which automatically and adaptively relaxes impedance matching | |
| Kim et al. | A 5.2-Gb/s low-swing voltage-mode transmitter with an AC-/DC-coupled equalizer and a voltage offset generator | |
| CN105453435B (en) | Integrated circuit chip and impedance calibration method thereof | |
| CN104935321B (en) | Input and output impedance calibration circuit and method | |
| US8183893B2 (en) | Driver comparator circuit | |
| US8085008B2 (en) | System for accounting for switch impendances | |
| CN105471782B (en) | Transmitter circuit and semiconductor integrated circuit | |
| TWI634334B (en) | Probe card module | |
| CN106548742B (en) | Panel driving circuit | |
| CN209572001U (en) | A kind of driving circuit and level shifting circuit of signal transfer tube | |
| US9614531B1 (en) | Termination resistance adjustment circuit and device including termination resistance adjustment circuit | |
| CN108270210A (en) | Power supply switch device | |
| JP2009216565A (en) | Semiconductor integrated circuit | |
| US20160341787A1 (en) | Battery simulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |