CN110138388A - A kind of anti-interference high-performance current steering DAC circuit - Google Patents
A kind of anti-interference high-performance current steering DAC circuit Download PDFInfo
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- CN110138388A CN110138388A CN201810133321.7A CN201810133321A CN110138388A CN 110138388 A CN110138388 A CN 110138388A CN 201810133321 A CN201810133321 A CN 201810133321A CN 110138388 A CN110138388 A CN 110138388A
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- power switch
- switch tube
- phase inverter
- ldo
- voltage
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- 239000003990 capacitor Substances 0.000 claims description 12
- 230000005611 electricity Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 238000003491 array Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000024241 parasitism Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/66—Digital/analogue converters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
- H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
- H03M1/0863—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of switching transients, e.g. glitches
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of anti-interference high-performance current steering DAC circuit, including phase inverter D1, phase inverter D2, phase inverter D3, phase inverter D4, driving voltage Vg1, driving voltage Vg2, driving voltage Vg3, driving voltage Vg4, power switch tube MP1, power switch tube MP2, power switch tube MP3, power switch tube MP4, voltage source High_LDO, voltage source Low_LDO, voltage source VDD_H, voltage source VDD_H by current source simultaneously with power switch tube MP1, power switch tube MP2, power switch tube MP3 is connected with power switch tube MP4, reverser D1 is connected through overdrive voltage Vg1 with power switch tube MP1, reverser D2 is through overdriving Voltage Vg2 is connected with power switch tube MP2, and reverser D3 is connected through overdrive voltage Vg3 with power switch tube MP3, and reverser D4 is connected through overdrive voltage Vg4 with power switch tube MP4.The utility model has the advantages that the drive voltage signal of driving switch array is made to work in High_LDO --- Low_LDO voltage range guarantees that work is in saturation region while switch arrays are opened.
Description
Technical field
The present invention relates to high-speed, high precision D/A converter design fields, it particularly relates to a kind of anti-interference high-performance
Current steering DAC circuit.
Background technique
Overwhelming majority signal present in nature is all continuous analog signal, and non-discrete digital signal.Therefore,
A kind of medium is needed to erect the bridge of signal transmitting between simulation and number, and digital analog converter (DAC) exactly will
Digital signal is converted into a kind of essential interface circuit of analog signal.The high speed of Digital Signal Processing (DSP) circuit is sent out
Equally also to the performance of converter circuit, more stringent requirements are proposed for exhibition.Under many typical cases, for example, it is wired or wireless
Communication, video frequency signal processing, Direct Digital Synthesis etc., the performance of high-speed, high precision converter have been largely fixed whole
The performance of a system, especially in high speed communication field, the performance of converter possibly even becomes the bottleneck of systematic entirety energy.Cause
This, no matter in academia or industry, the research to converter performance is all hot spot all the time.
In the DAC of numerous types, the structure of current steering DAC determines its inherent high-speed, high precision characteristic.Often
The current steering DAC of rule drives the switch arrays of DAC usually using the clock signal of " supply voltage-ground voltage ".
With the diminution of process, the reduction of Vth, in the case where meeting the certain amplitude of oscillation of output voltage, the PMOS tube of switch arrays
Linear zone can be entered in open state, directly influence the dynamic property of chip；The clock signal meeting of " supply voltage-ground voltage "
Due to encapsulating the influence of parasitism RLC network, unsatisfactory clock signal is exported to switch arrays, wherein containing due to quick
Charge and discharge and parasitic effects bring noise signal.When this noise signal is most under different DAC switching signals not
It is differential symmetry, directly affects the third-order non-linear of circuit.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For the problems in the relevant technologies, the present invention proposes a kind of anti-interference high-performance current steering DAC electricity
Road, to overcome above-mentioned technical problem present in existing the relevant technologies.
The technical scheme of the present invention is realized as follows:
A kind of anti-interference high-performance current steering DAC circuit, including phase inverter D1, phase inverter D2, phase inverter
D3, phase inverter D4, driving voltage Vg1, driving voltage Vg2, driving voltage Vg3, driving voltage Vg4, power switch tube MP1, function
Rate switching tube MP2, power switch tube MP3, power switch tube MP4, voltage source VDD_H, voltage source High_LDO, voltage source Low_
LDO, the VDD_H simultaneously with the power switch tube MP1, the power switch tube MP2, the power switch tube MP3 and institute
It states power switch tube MP4 to be connected, the phase inverter D1 is connected by the driving voltage Vg1 with the power switch tube MP1
It connects, the phase inverter D2 is connected by the driving voltage Vg2 with the power switch tube MP2, and the phase inverter D3 passes through
The driving voltage Vg3 is connected with the power switch tube MP3, and the phase inverter D4 passes through the driving voltage Vg4 and institute
It states power switch tube MP4 to be connected, the power switch tube MP1 drain terminal is connected with the power switch tube MP3 drain terminal, described
Power switch tube MP4 drain terminal is connected with the power switch tube MP2 drain terminal, the phase inverter D1, the phase inverter D2 and electricity
Appearance is connected with parallel way, and is connected to the voltage source High_LDO and the one end the voltage source Low_LDO simultaneously, described
Phase inverter D3, the phase inverter D4 are connected with the capacitor with parallel way, and are connected to the voltage source High_ simultaneously
LDO and the one end the voltage source Low_LDO.
Further, the phase inverter D1, the phase inverter D2, the phase inverter D3, the phase inverter D4 connection electricity
Hold is mos capacitance or metal MIM capacitor.
Further, the voltage source VDD_H is direct current.
The invention has the benefit that anti-to the afterbody of driving switch array using high and low driving power LDO respectively
The progress of phase device is independently-powered, and High_LDO and Low_LDO can be only with one, while powering to D1, D2, D3, D4, and using greatly
Capacitor is filtered, and High_LDO and Low_LDO are on piece LDO, is respectively intended to generate two voltages VH, VL, so that driving letter
The range of number voltage guarantees that work is in saturation region while switch arrays are opened between VH-VL, at the same effectively reduce by
In encapsulation effect to piece interior power, bring noise, effectively raise the dynamic property of DAC.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural principle of anti-interference high-performance current steering DAC circuit according to embodiments of the present invention
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
According to an embodiment of the invention, providing a kind of anti-interference high-performance current steering DAC circuit.
As shown in Figure 1, anti-interference high-performance current steering DAC circuit according to an embodiment of the present invention, including
Phase inverter D1, phase inverter D2, phase inverter D3, phase inverter D4, driving voltage Vg1, driving voltage Vg2, driving voltage Vg3, driving
Voltage Vg4, power switch tube MP1, power switch tube MP2, power switch tube MP3, power switch tube MP4, voltage source VDD_H,
Voltage source High_LDO, voltage source Low_LDO, the VDD_H simultaneously with the power switch tube MP1, the power switch tube
MP2, the power switch tube MP3 are connected with the power switch tube MP4, and the phase inverter D1 passes through the driving voltage
Vg1 is connected with the power switch tube MP1, and the phase inverter D2 is by the driving voltage Vg2 and the power switch tube
MP2 is connected, and the phase inverter D3 is connected by the driving voltage Vg3 with the power switch tube MP3, the phase inverter
D4 is connected by the driving voltage Vg4 with the power switch tube MP4, the power switch tube MP1 drain terminal and the function
Rate switching tube MP3 drain terminal is connected, and the power switch tube MP4 drain terminal is connected with the power switch tube MP2 drain terminal, described
Phase inverter D1, the phase inverter D2 are connected with capacitor with parallel way, and be connected to simultaneously the voltage source High_LDO and
The one end the voltage source Low_LDO, the phase inverter D3, the phase inverter D4 are connected with the capacitor with parallel way, and
It is connected to the voltage source High_LDO and the one end the voltage source Low_LDO simultaneously.
In addition, in one embodiment, the phase inverter D1, the phase inverter D2, the phase inverter D3, the phase inverter
The capacitor of D4 connection is mos capacitance or metal MIM capacitor.
In addition, in one embodiment, the phase inverter D1, phase inverter D2, phase inverter D3, phase inverter D4 can share one
A High_LDO and Low_LDO.
In conclusion being opened respectively using high and low driving power LDO driving by means of above-mentioned technical proposal of the invention
Close array afterbody phase inverter carry out it is independently-powered, High_LDO and Low_LDO can only with one, while to D1, D2,
D3, D4 power supply, and be filtered using bulky capacitor, High_LDO and Low_LDO are on piece LDO, are respectively intended to generate two electricity
VH, VL are pressed, so that the range of driving signal voltage between VH-VL, guarantees to be worked while switch arrays are opened in saturation region,
Simultaneously effectively reduce due to encapsulation effect to piece interior power, bring noise, effectively raise the dynamic of DAC
Energy.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (3)
1. a kind of anti-interference high-performance current steering DAC circuit, which is characterized in that including phase inverter D1, phase inverter
D2, phase inverter D3, phase inverter D4, driving voltage Vg1, driving voltage Vg2, driving voltage Vg3, driving voltage Vg4, power switch
Pipe MP1, power switch tube MP2, power switch tube MP3, power switch tube MP4, voltage source VDD_H, voltage source High_LDO, electricity
Potential source Low_LDO, the VDD_H simultaneously with the power switch tube MP1, the power switch tube MP2, the power switch tube
MP3 is connected with the power switch tube MP4, and the phase inverter D1 is by the driving voltage Vg1 and the power switch tube
MP1 is connected, and the phase inverter D2 is connected by the driving voltage Vg2 with the power switch tube MP2, the phase inverter
D3 is connected by the driving voltage Vg3 with the power switch tube MP3, and the phase inverter D4 passes through the driving voltage
Vg4 is connected with the power switch tube MP4, and the power switch tube MP1 drain terminal is connected with the power switch tube MP3 drain terminal
It connects, the power switch tube MP4 drain terminal is connected with the power switch tube MP2 drain terminal, the phase inverter D1, the phase inverter
D2 is connected with capacitor with parallel way, and is connected to the voltage source High_LDO and the voltage source Low_LDO mono- simultaneously
End, the phase inverter D3, the phase inverter D4 are connected with the capacitor with parallel way, and are connected to the voltage source simultaneously
High_LDO and the one end the voltage source Low_LDO.
2. a kind of anti-interference high-performance current steering DAC circuit according to claim 1, which is characterized in that
The phase inverter D1, the phase inverter D2, the phase inverter D3, the phase inverter D4 connection capacitor be mos capacitance or metal
MIM capacitor.
3. a kind of anti-interference high-performance current steering DAC circuit according to claim 1, which is characterized in that
The phase inverter D1, phase inverter D2, phase inverter D3, phase inverter D4 can share High_LDO and Low_LDO.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133321.7A CN110138388A (en) | 2018-02-09 | 2018-02-09 | A kind of anti-interference high-performance current steering DAC circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133321.7A CN110138388A (en) | 2018-02-09 | 2018-02-09 | A kind of anti-interference high-performance current steering DAC circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110138388A true CN110138388A (en) | 2019-08-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133321.7A Pending CN110138388A (en) | 2018-02-09 | 2018-02-09 | A kind of anti-interference high-performance current steering DAC circuit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070247411A1 (en) * | 2006-04-25 | 2007-10-25 | Kai-Lan Chuang | Integrated circuit capable of synchronizing multiple outputs |
| CN101741389A (en) * | 2009-12-21 | 2010-06-16 | 西安电子科技大学 | Segmented current-steering digital-to-analog converter |
| CN102013887A (en) * | 2009-09-04 | 2011-04-13 | 复旦大学 | Driver for reducing voltage swing for digital-to-analog converter |
| CN102025365A (en) * | 2009-09-18 | 2011-04-20 | 复旦大学 | Driver for reducing voltage swing |
| CN102571097A (en) * | 2010-12-31 | 2012-07-11 | 国民技术股份有限公司 | Voltage amplitude limiting circuit for controlling current supply switch of current steering analog-to-digital converter |
| CN106301379A (en) * | 2016-08-17 | 2017-01-04 | 宁波大学 | A kind of export smooth DAC element circuit |
| CN208015711U (en) * | 2018-02-09 | 2018-10-26 | 长沙泰科阳微电子有限公司 | A kind of anti-interference high-performance current steering DAC circuit |
-
2018
- 2018-02-09 CN CN201810133321.7A patent/CN110138388A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070247411A1 (en) * | 2006-04-25 | 2007-10-25 | Kai-Lan Chuang | Integrated circuit capable of synchronizing multiple outputs |
| CN102013887A (en) * | 2009-09-04 | 2011-04-13 | 复旦大学 | Driver for reducing voltage swing for digital-to-analog converter |
| CN102025365A (en) * | 2009-09-18 | 2011-04-20 | 复旦大学 | Driver for reducing voltage swing |
| CN101741389A (en) * | 2009-12-21 | 2010-06-16 | 西安电子科技大学 | Segmented current-steering digital-to-analog converter |
| CN102571097A (en) * | 2010-12-31 | 2012-07-11 | 国民技术股份有限公司 | Voltage amplitude limiting circuit for controlling current supply switch of current steering analog-to-digital converter |
| CN106301379A (en) * | 2016-08-17 | 2017-01-04 | 宁波大学 | A kind of export smooth DAC element circuit |
| CN208015711U (en) * | 2018-02-09 | 2018-10-26 | 长沙泰科阳微电子有限公司 | A kind of anti-interference high-performance current steering DAC circuit |
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