CN113098485A - Double-rotation single-drive circuit - Google Patents
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Abstract
The embodiment of the invention discloses a double-rotation single-drive circuit, which comprises: a follower, comprising: a first signal input port and a first signal output port; a push-pull amplifier comprising: the second signal input port, the third signal input port connected with the first signal output port and the single-ended signal output port; the first signal input port of the follower and the second signal input port of the push-pull amplifier are configured to receive an input differential signal, and the single-ended signal output port is configured to output a single-ended signal converted from the differential signal. The double-rotation single-drive circuit disclosed by the embodiment of the invention improves the energy utilization rate of the circuit.
Description
Technical Field
The invention relates to the field of high-speed communication, in particular to a double-rotation single-drive circuit.
Background
With the development of the times, the performance of communication systems is continuously improved, the dependence of people on data is continuously increased, and the demand on data rate is continuously increased. Conventional cables based on copper wires are gradually being eliminated, and optical fibers with large capacity and high speed become the mainstream of long-distance communication. In short-range communication, optical communication is also receiving more and more attention, such as: fiber to the home, vehicular optical networks, etc. In the last decades, the information rate has progressed from the Mbit/s level when the optical fiber was first invented to the Gbit/s level today, optical communication has progressed and this growing trend is still continuing.
The optical communication chip is the core competitiveness of the nation and enterprises in the optical fiber communication industry, and along with the coming of the current 5G era, the competition is bound to be intensified. In the high-end chip industry, foreign chip manufacturers keep monopoly status all the time, the development of the high-end industry in China is severely restricted, and the national strategic safety is threatened. The optical transmitter is used as a core component of the optical communication chip, and has important significance for improving the performance of the optical communication system in China, developing the society and occupying the high-speed integrated chip market in China. As shown in fig. 1, the conventional dual-rotation single-driving circuit includes a transistor (also called bipolar transistor) Q1, a resistor R1, a transistor Q2, and a resistor R2. The base of the transistor Q1 receives a differential input signal from the previous stage, such as Vin +, the resistor R1 is disposed between the emitter of the transistor Q1 and the single-ended signal output port, and the resistor R2 is disposed between the emitter of the transistor Q1 and ground. The base of the transistor Q2 is connected to a path of differential input signal from the previous stage, for example, Vin-, the collector of the transistor Q1 is connected to high level, the collector of the transistor Q2 is connected to the single-ended signal output port, and the single-ended signal output port outputs a single-ended signal Vout.
For the dual-winding single-driving circuit shown in FIG. 1, the input Vin of the transistor Q2 contributes negative to the output Vout, and when the input of the transistor Q2 is negative, i.e., when Vin-is positive to the output Vout. The output contribution of the triode Q1 to Vout is positive, when Vin + is positive, Vin + is also positive to Vout output at this moment, thus realize Vout part to Vin + and Vin-superposition, although this kind of structure has realized the result that double-ended input turns into single-ended output, but the ability utilization ratio of this circuit is lower namely energy efficiency.
Therefore, it is an urgent need to provide a dual-rotation single driving circuit capable of improving energy utilization.
Disclosure of Invention
The embodiment of the invention provides a double-rotation single-drive circuit, which solves the problem of low energy efficiency (energy efficiency) of the existing double-rotation single-drive circuit.
Specifically, an embodiment of the present invention provides a dual-rotation single-driving circuit, including: a follower, comprising: a first signal input port and a first signal output port; a push-pull amplifier comprising: the second signal input port, the third signal input port connected with the first signal output port and the single-ended signal output port; the first signal input port of the follower and the second signal input port of the push-pull amplifier are used for receiving input differential signals, and the single-ended signal output port is used for outputting single-ended signals obtained by converting the differential signals.
The double-rotation single-drive circuit has high linearity and high energy efficiency, the follower can reduce power consumption and improve energy utilization rate, the push-pull amplifier increases the linearity of the circuit and increases the energy utilization rate, and the push-pull amplifier is also used as an output buffer, so that the structure is simplified, and more power consumption is saved.
In one embodiment provided by the present invention, the follower comprises: a first resistor; a first switching element comprising a first switching element input terminal, a first switching element output terminal, and a first switching element control terminal; the control end of the first switching element is in short circuit with the input end of the first switching element and is connected with the first signal input port; the output end of the first switch element is connected with the first signal output port; the first resistor is connected between the first switching element output terminal and ground.
The resistance value of the first resistor is controlled to be a large resistance value, so that the current consumed on the first resistor is small, and the power consumption of the circuit is reduced.
In one embodiment provided by the present invention, the push-pull amplifier comprises: a second resistor; a third resistor; a second switching element comprising a second switching element input terminal, a second switching element output terminal, and a second switching element control terminal; wherein the second switching element control terminal is connected to the second signal input port; the second resistor is connected with the output end of the second switching element and the single-ended signal output port; the control end of the second switching element is connected with a power supply end; a third switching element comprising a third switching element input terminal, a third switching element output terminal, and a third switching element control terminal; wherein the control end of the third switching element is connected with the first signal output port; the input end of the third switching element is connected with the single-ended signal output port; the third resistor is connected with the output end of the third switching element.
The third resistor controls the gain of a path corresponding to the output end of the third switching element, and the third resistor has the linear capacity of the driver, so that a larger output swing amplitude can be met. The push-pull amplifier completely combines two input signals into one output, thereby avoiding the energy waste of the circuit structure shown in figure 1 and greatly improving the energy efficiency.
In one embodiment provided by the present invention, the push-pull amplifier further comprises: and the first inductor is connected between the second resistor and the single-ended signal output port.
The first inductor and the first resistor form an inductive-resistive coupling circuit, and a new zero point is introduced into the circuit by utilizing an inductive peaking technology, so that the bandwidth is increased.
In one embodiment provided by the present invention, the method further includes: a high pass filter coupled in parallel with the follower.
The high-pass filter can filter out a direct-current part and a high-frequency part in a signal, effectively protects a circuit and removes high-frequency noise signals which are possibly carried by the signal when the signal passes through a front electrode circuit.
In one embodiment provided by the present invention, the high pass filter comprises: a first capacitance connected between the first signal input port and the first signal output port.
In one embodiment of the present invention, the apparatus further includes a time-linear equalizer including a fourth signal input port, a fifth signal input port, a second signal output port, and a third signal output port; the fourth signal input port and the fifth signal output port are used for receiving input initial differential signals; the third signal output port is connected to the first signal input port, the second signal output port is connected to the second signal input port, and the second signal output port and the third signal output port are configured to output the differential signal obtained based on the initial differential signal to the first signal input port and the second signal input port.
In the embodiment, by introducing the time linear equalizer, the attenuation of the driving circuit at a certain frequency is compensated, so that the bandwidth is increased.
In one embodiment provided by the present invention, the time-linear equalizer comprises: a fourth resistor; a fifth resistor; a first current source; a second current source; the fourth switching element comprises a fourth switching element input end, a fourth switching element output end and a fourth switching element control end; a fifth switching element comprising a fifth switching element input, a fifth switching element output and a fifth switching element control; a variable capacitance; and a variable resistance; the fourth resistor is connected between the input end of the fourth switching element and a power supply end, and the input end of the fourth switching element is connected with the second signal output port; the fifth resistor is connected between the input end of the fifth switching element and the power supply end, and the input end of the fifth switching element is connected with the third signal output port; the control end of the fourth switching element is connected with the fourth signal input port; the control end of the fifth switching element is connected with the fifth signal input port; the first current source is connected with the output end of the fourth switching element; the second current source is connected with the output end of the fifth switching element; the variable capacitor is connected between the fourth switching element output terminal and the fifth switching element output terminal; the variable resistor is connected between the fourth switching element output and the fifth switching element output.
In an embodiment of the present invention, the first switching element is a triode or a field effect transistor.
The embodiment of the invention provides a double-conversion single-circuit integrated chip, which comprises: any one of the dual single-turn drive circuits described above.
The double-rotation single-chip integrated circuit chip provided by the embodiment of the invention integrates the double-rotation single-chip driving circuit on the chip, thereby being more beneficial to the installation and use of an actual circuit.
The technical scheme can have one or more of the following beneficial effects: the embodiment of the invention provides a double-rotation single-drive circuit, which comprises: the follower and the push-pull amplifier have high linearity and high energy efficiency, wherein the follower can reduce power consumption and improve energy utilization rate in a circuit. The use of push-pull amplifiers increases the linearity of the circuit and increases the energy efficiency. Meanwhile, the push-pull amplifier also serves as an output buffer, so that the structure is simplified and more power consumption is saved. In addition, a first inductor is further introduced into the push-pull amplifier circuit, an inductive resistance coupling circuit is formed by the first inductor and the first resistor, a new zero point is introduced into the circuit by utilizing an inductive peaking technology, and the bandwidth is increased. In addition, the double-rotation single-drive circuit adds the time linear equalizer at the front stage of the circuit, so that an additional zero pole is added to the circuit, and the attenuation of the drive circuit at a certain frequency is compensated by adding the module, so that the bandwidth is increased. In addition, the dual-rotation single-drive circuit provided by the embodiment of the invention can be additionally provided with a high-pass filtering module which is used for preventing direct-current voltage and high-frequency components introduced by a time linear equalizer or other previous-stage circuits, protecting the circuit and improving the energy utilization rate. Therefore, the embodiment of the invention realizes a reconfigurable double-rotation single-drive circuit with high linearity and high energy efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of a conventional dual-rotation single-driving circuit;
fig. 2 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 9 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 10 is a schematic circuit diagram of a dual-rotation single-driving circuit according to an embodiment of the present invention;
fig. 11 is a schematic diagram of a dual-conversion single-circuit integrated chip according to an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following embodiments of the present invention provide a dual-end single-driver circuit, which reduces power consumption and improves energy utilization by introducing a follower. By introducing the push-pull amplifier, the differential signal with double ends of the output signal is completely converted into a single-ended signal to be output, and the energy utilization rate is increased. Meanwhile, a new component inductor is introduced into the push-pull amplifier, so that an extra zero point is obtained, and the bandwidth is widened. In addition, the double-rotation single-driving circuit can add a time linear equalizer (CTLE) and a high-pass filter to obtain additional gain.
As shown in fig. 2, an embodiment of the present invention provides a dual-rotation single-driving circuit 10, which includes a follower 100 and a push-pull amplifier 200. Wherein the follower 100 includes a first signal input port 110 and a first signal output port 120. The push-pull amplifier 200 includes a second signal input port 210, a third signal input port 220, and a single-ended signal output port 230.
Wherein the third signal input 220 of the push-pull amplifier 200 is connected to the first signal output port 120. The first signal input port 110 of the follower 100 and the second signal input port 210 of the push-pull amplifier 200 are configured to receive an input differential signal, and the single-ended signal output port 230 is configured to output a single-ended signal converted from the differential signal.
In one embodiment of the present invention, a dual-rotation single-driving circuit 10 has high linearity and high energy efficiency, in which a follower 100 can reduce power consumption and improve energy utilization, a push-pull amplifier 200 increases the linearity of the circuit and increases the energy utilization, and the push-pull amplifier 200 also serves as an output buffer, thereby simplifying the structure and saving more power consumption.
Further, the follower 100 includes, for example, a first switching element Q3 and a first resistor R3. The first switching element control end of the first switching element Q3 is shorted with the first switching element input end and is connected to the first signal input port 110, and the first switching element output end is connected to the first signal output port 120; the first resistor R3 is connected to the output terminal of the first switching element, and the other terminal of the first resistor R3 is connected to ground, i.e., a zero level terminal.
The follower 100 receives one path of the differential signal from the front end, and controls the resistance of the first resistor R3 to be a large resistance, so that the current consumed on the first resistor is small, the power consumption of the circuit is reduced, and the energy utilization rate of the double-conversion single circuit is improved.
Further, the push-pull amplifier 200 includes, for example, a second switching element Q4, a second resistor R4, a third switching element Q5, and a third resistor R5. A second switching element Q4 has a second switching element input connected to a power supply terminal, such as a 5V dc power supply or other power supply device, a second switching element control terminal connected to the second signal input port 210, and a second resistor R4 connected between the second switching element output and the single-ended signal output port 230. The third switching element output terminal of the third switching element Q5 is connected to the single-ended signal output port 230. The third switching element control terminal is connected to the third signal input port 200, and the third signal input port 200 is connected to the first signal output port 120. The third resistor R5 is connected to the output terminal of the third switching element, and the other terminal of the third resistor R5 is grounded, i.e., at zero-level potential.
The gain of the path corresponding to the output end of the third switching element is controlled by the third resistor control R5, and the third resistor R5 has the linear capability of a driver, so that a large output swing can be met. The use of the push-pull amplifier 200 completely combines two input signals (double-ended signals) into one output, for example, a single-ended signal output, avoids energy waste of the circuit configuration shown in fig. 1, and greatly improves energy efficiency.
Since the signal has frequency distortion at high frequency, which does not meet the requirement of high-speed signal transmission, further, in an embodiment provided by the present invention, as shown in fig. 2, a first inductor L1 is introduced. The first inductor L1 is connected between the second resistor R4 and the single-ended signal output port 230, and forms an inductor-resistor series coupling circuit with the second resistor R4. By utilizing the inductive peaking technology, the first inductor L1 introduces a new zero point for the dual-rotation single driving circuit 10, thereby compensating the reduction of the gain of the dual-rotation single driving circuit 10 at high frequency, increasing the bandwidth and being beneficial to high-speed signal transmission.
Specifically, the first switching element Q3 is, for example, a transistor, a field effect transistor, or another type of transistor. The second switching element Q4 is, for example, a transistor, a field effect transistor, or other type of transistor. The third switching element Q5 is, for example, a transistor, a field effect transistor, or another type of transistor. The aforementioned triode can be an NPN type triode or a PNP type triode, and the field effect transistor can be an NMOS type transistor or a PMOS type transistor. Wherein, the corresponding relationship of each port of the aforementioned switch element is: the control end of the switching element is a triode base or a field effect transistor grid, the input end of the switching element is a triode collector or a field effect transistor drain, and the output end of the switching element is a triode emitter or a field effect transistor source. The different dual single-conversion driving circuits 10 are formed by selecting different types of the first switching element Q3, the second switching element Q4 and the third switching element Q5, as shown in fig. 2 to 5.
As shown in fig. 2, the first switching element Q3 is a transistor, specifically, an NPN-type transistor, and has a base as a control terminal of the first switching element, a collector as an input terminal of the first switching element, and an emitter as an output terminal of the first switching element. The second switching element Q4 is a triode, specifically an NPN type triode, having a base terminal as a control terminal of the second switching element, a collector terminal connected to the input terminal of the second switching element, and an emitter terminal connected to the control terminal of the second switching element. The third switching element Q5 is a triode, specifically an NPN type triode, the base of which is connected to the control terminal of the third switching element, the collector of which is connected to the input terminal of the third switching element, and the emitter of which is connected to the output terminal of the third switching element. The gain of the circuit can be controlled by adjusting the third resistor R5 connected to the control terminal of the third switching element. Specifically, the transfer function of the embodiment of the present invention is expressed as:
wherein Vout is a single-ended output signal, VD2S,inThe transconductance of the second switching element Q4 is g for the differential signal output by the two-terminal signal of the driving circuitQ4The transconductance of the third switching element Q5 is gQ5The second resistor R4 has a resistance RE4The third resistor R5 has a resistance RE5The resistance of the first inductor L1 is LE1The output capacitor of the single-ended signal output terminal is Cout. From the formula, the invention realizes wider gain tuning range and bandwidth, and reduces power consumption. The push-pull amplifier completely combines two input signals into one output, and energy efficiency is improved.
The dual single-switch driving circuit 10 shown in fig. 3 is different from the dual single-switch driving circuit 10 shown in fig. 2 in that fig. 3 changes the first switching element Q3 shown in fig. 2 from a triode to a field effect transistor, for example, the first switching element Q3 is an NMOS transistor, the gate is a control terminal of the first switching element, the drain is an input terminal of the first switching element, and the source is an output terminal of the first switching element.
The dual single-switch driving circuit 10 shown in fig. 4 is different from the dual single-switch driving circuit 10 shown in fig. 2 in that fig. 4 changes the second switching element Q4 and the third switching element Q5 shown in fig. 2 from transistors to field effect transistors, for example, the second switching element Q4 and the third switching element Q5 are NMOS transistors.
The dual single-switch driving circuit 10 shown in fig. 5 is different from the dual single-switch driving circuit 10 shown in fig. 2 in that fig. 5 changes the first switching element Q3, the second switching element Q4 and the third switching element Q5 shown in fig. 2 from triodes to field effect transistors, for example, the first switching element Q3, the second switching element Q4 and the third switching element Q5 are all NMOS transistors.
As shown in fig. 6, an embodiment of the present invention provides a dual-rotation single-driving circuit 10 further including a time linear equalizer (CTLE) 20. The time linear equalizer 20 includes four ports: a fourth signal input port 310, a fifth signal input port 320, a second signal output port 330, and a third signal output port 340. The second signal output port 330 is connected to the second signal input port 210 and the third signal output port is connected to the first signal input port 110.
Wherein the time-linear equalizer 20 includes a fourth resistor RC1A fifth resistor RC2A first current source I1A second current source I2The fourth partA switch element M1, a fifth switch element M2, and a variable capacitor CE1And a variable resistor RE1. Wherein the fourth resistor RC1And a fifth resistor RC2Are the same, the first current source I1And a second current source specification I2For example, the fourth switching element M1 and the fifth switching element M2 are the same type of switching element, such as NPN type transistor, PNP type transistor, fet or other switching elements, and the transconductances of the fourth switching element M1 and the fifth switching element M2 are the same, although the embodiment is not limited thereto, and the fourth resistor RC1And a fifth resistor RC2The resistance values of the first current source I can be different1And a second current source I2May be different, and the fourth switching element M1 and the fifth switching element M2 may be different types of switching elements. As shown in fig. 6, for example, the fourth switching element M1 is an NPN transistor, the input terminal of the fourth switching element is an NPN transistor collector, and is connected to the fourth signal input port 310, the output terminal of the fourth switching element is an NPN transistor emitter, and the input terminal of the fourth switching element is an NPN transistor collector, and is connected to the second signal output port 330. The fifth switching element M2 is an NPN transistor, the control terminal of the fourth switching element is an NPN transistor base, and is connected to the fifth signal input port 320, the output terminal of the fifth switching element is an NPN transistor emitter, and the input terminal of the fifth switching element is an NPN transistor collector, and is connected to the second signal output port 330. The first resistor is arranged between the input end of the fourth switching element and a power supply end, such as a 5V direct current power supply or other power supplies, the second resistor is arranged between the input end of the fifth switching element and the power supply end, such as a 5V direct current power supply or other power supplies, the first current source is connected with the output end of the fourth switching element, and the second current source is connected with the output end of the fifth switching element. Variable capacitance CE1Connected between the fourth switching element output and the fifth switching element output. Variable resistor RE1Connected between the fourth switching element output and the fifth switching element output. The transfer function of the time-linear equalizer 20 shown in fig. 6 can be described as:
H＝gmRE1CE1(1+s/WZ1)/(1+gmRE1CE1)(1+s/WP)
wherein, the variable resistor RE1And a variable capacitance CE1Form a feedback circuit, RC1A load is formed at the collector. At this time, the variable resistor R can be adjustedE1And a variable capacitance CE1Considered as an ideal capacitive resistance. gm is the transconductance of the fourth switching element M1 or the fifth switching element M2. From this transfer function it can be seen that CTLE introduces a new zero point WZ1And a new pole WPWherein zero point WZ1Is positioned at: wZ1＝1/RE1CE1. Due to the variable resistance RE1And a variable capacitance CE1The adjustable zero point can enable the zero point to be located at the pole position, can perfectly compensate distortion caused by the pole, increases the linearity degree of the circuit, and widens the bandwidth.
As shown in fig. 7-10, the dual-rotation single-driving circuit 10 according to the embodiment of the present invention further includes, for example, a high-pass filter 400, and the high-pass filter 400 is coupled in parallel with the follower 100.
Further, the high pass filter 400 includes, for example, a first capacitor C1 coupled in parallel with the follower 100. Specifically, the first capacitance C1 is disposed between the first signal input port 110 and the first signal output port 120. Since the capacitor has the function of isolating direct current, the first capacitor C1 can block the direct current component from the previous pole circuit, and in addition, the higher the frequency of the signal transmitted into the dual-conversion single circuit, the smaller the capacitive reactance of the capacitor, so that the high frequency component will not pass through the follower 100, but pass through the first capacitor C1 and the first resistor R3 to be filtered, that is, the high frequency component is filtered by the high pass filter 400. Therefore, the high-pass filter is added to prevent direct-current components or high-frequency components introduced by a previous-stage circuit such as a time linear equalizer, the purity of signals is maintained, a switching element in a follower circuit is protected from being broken down, and the energy utilization rate is improved.
In addition, as shown in fig. 11, an embodiment of the present invention provides a dual-conversion single-circuit integrated chip 30, including: the double-rotor single-driver circuit disclosed in any one of the foregoing embodiments. For the related description of the dual-rotation single-driving circuit, reference may be made to the related description of the foregoing embodiments, and further description is omitted here.
In summary, an embodiment of the present invention provides a dual-rotation single-driving circuit, including: the follower and the push-pull amplifier have high linearity and high energy efficiency, wherein the follower can reduce power consumption and improve energy utilization rate in a circuit. The use of push-pull amplifiers increases the linearity of the circuit and increases the energy efficiency. Meanwhile, the push-pull amplifier also serves as an output buffer, so that the structure is simplified and more power consumption is saved. In addition, a first inductor is further introduced into the push-pull amplifier circuit, an inductive resistance coupling circuit is formed by the first inductor and the first resistor, a new zero point is introduced into the circuit by utilizing an inductive peaking technology, and the bandwidth is increased. In addition, the double-rotation single-driving circuit adds the time linear equalizer at the front stage of the circuit, so that an additional zero pole is added to the circuit, and the attenuation of the driving circuit at a certain frequency is compensated by adding the module, so that the bandwidth is increased. In addition, the dual-rotation single-drive circuit provided by the embodiment of the invention can be additionally provided with a high-pass filtering module which is used for preventing direct-current voltage and high-frequency components introduced by a time linear equalizer or other previous-stage circuits, protecting the circuit and improving the energy utilization rate. Therefore, the embodiment of the invention realizes a reconfigurable double-rotation single-drive circuit with high linearity and high energy efficiency.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A dual rotary single drive circuit comprising:
a follower, comprising: a first signal input port and a first signal output port;
a push-pull amplifier comprising: the second signal input port, the third signal input port connected with the first signal output port and the single-ended signal output port;
the first signal input port of the follower and the second signal input port of the push-pull amplifier are used for receiving input differential signals, and the single-ended signal output port is used for outputting single-ended signals obtained by converting the differential signals.
2. The dual-rotary single-driver circuit as claimed in claim 1, wherein said follower comprises:
a first resistor;
a first switching element comprising a first switching element input terminal, a first switching element output terminal, and a first switching element control terminal; the control end of the first switching element is in short circuit with the input end of the first switching element and is connected with the first signal input port; the output end of the first switch element is connected with the first signal output port; the first resistor is connected to the first switching element output terminal.
3. The dual-rotor single-driver circuit as claimed in claim 1, wherein the push-pull amplifier comprises:
a second resistor;
a third resistor;
a second switching element comprising a second switching element input terminal, a second switching element output terminal, and a second switching element control terminal; wherein the second switching element control terminal is connected to the second signal input port; the second resistor is connected with the output end of the second switching element and the single-ended signal output port; the input end of the second switching element is connected with a power supply end;
a third switching element comprising a third switching element input, a third switching element output, and a third switching element control; wherein the control end of the third switching element is connected with the first signal output port; the input end of the third switching element is connected with the single-ended signal output port; the third resistor is connected with the output end of the third switching element.
4. The dual-rotor single-driver circuit as claimed in claim 3, wherein the push-pull amplifier further comprises: and the first inductor is connected between the second resistor and the single-ended signal output port.
5. The dual-rotor single-driver circuit as claimed in claim 1, further comprising:
a high pass filter coupled in parallel with the follower.
6. The dual-rotor single-driver circuit as claimed in claim 5, wherein the high-pass filter comprises: a first capacitance connected between the first signal input port and the first signal output port.
7. The dual-rotor single-driver circuit as claimed in claim 1, further comprising:
a time-linear equalizer comprising: a fourth signal input port, a fifth signal input port, a second signal output port, and a third signal output port;
the fourth signal input port and the fifth signal output port are used for receiving input initial differential signals; the third signal output port is connected to the first signal input port, the second signal output port is connected to the second signal input port, and the second signal output port and the third signal output port are configured to output the differential signal obtained based on the initial differential signal to the first signal input port and the second signal input port.
8. The dual-rotor single-driver circuit as claimed in claim 7, wherein the time-linear equalizer comprises:
a fourth resistor;
a fifth resistor;
a first current source;
a second current source;
the fourth switching element comprises a fourth switching element input end, a fourth switching element output end and a fourth switching element control end;
a fifth switching element comprising a fifth switching element input, a fifth switching element output and a fifth switching element control;
a variable capacitance; and
a variable resistor;
the fourth resistor is connected between the input end of the fourth switching element and a power supply end, and the input end of the fourth switching element is connected with the second signal output port; the fifth resistor is connected between the input end of the fifth switching element and the power supply end, and the input end of the fifth switching element is connected with the third signal output port; the control end of the fourth switching element is connected with the fourth signal input port; the control end of the fifth switching element is connected with the fifth signal input port; the first current source is connected with the output end of the fourth switching element; the second current source is connected with the output end of the fifth switching element; the variable capacitor is connected between the fourth switching element output terminal and the fifth switching element output terminal; the variable resistor is connected between the fourth switching element output and the fifth switching element output.
9. The dual-rotor single-driver circuit as claimed in claim 2, wherein the first switching element is a transistor or a field effect transistor.
10. A dual-conversion single-circuit integrated chip, comprising: the dual rotary single drive circuit as claimed in any one of the preceding claims 1 to 9.
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| CN202110363379.2A CN113098485B (en) | 2021-04-02 | 2021-04-02 | Double-rotation single-drive circuit |
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| CN202110363379.2A CN113098485B (en) | 2021-04-02 | 2021-04-02 | Double-rotation single-drive circuit |
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| CN113098485B CN113098485B (en) | 2022-12-02 |
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| CN113098485B (en) | 2022-12-02 |
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