CN114489226B - Compensation circuit and method for input and output voltage swing linearity - Google Patents
Compensation circuit and method for input and output voltage swing linearity Download PDFInfo
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- CN114489226B CN114489226B CN202210340267.XA CN202210340267A CN114489226B CN 114489226 B CN114489226 B CN 114489226B CN 202210340267 A CN202210340267 A CN 202210340267A CN 114489226 B CN114489226 B CN 114489226B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/625—Regulating voltage or current wherein it is irrelevant whether the variable actually regulated is ac or dc
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Abstract
The application provides an input/output voltage swing linearity compensation circuit and a method thereof, wherein the compensation circuit comprises: the system comprises a monitor, a control module and a driver; the monitor monitors the voltage swing to be sent by the sending end, the control module obtains a control instruction for adjusting the voltage swing according to the requirement of the linearity of the input and output voltage swing, and finally the driver adjusts the output voltage swing according to the control instruction to obtain the output voltage meeting the requirement of the linearity of the input and output voltage swing. The nonlinear control circuit utilizes nonlinearity caused by devices in the digital control compensation circuit, so that the linearity of the input and output voltage swing can reach a completely ideal state; and proper over compensation can be carried out, so that the output voltage processed by a circuit post-stage device also meets the requirement of input and output voltage swing linearity.
Description
Technical Field
The present disclosure relates to electronic circuits, and more particularly, to a compensation circuit and method for input/output voltage swing linearity.
Background
Electronic circuit systems generally have requirements for output voltage swing, which is correlated to circuit structure, device size, supply voltage, speed, gain, etc. Input-output voltage swing linearity is often an important indicator of electronic circuitry. Therefore, how to make the input-output voltage swing linearity meet the requirement is a problem to be considered in the design of electronic circuits.
In the prior art, the analog design method in the adjusting circuit is mainly used to adjust the input/output voltage swing linearity to meet the requirement of the input/output voltage swing linearity. This analog approach usually requires high power consumption and does not achieve the perfect linearity of the input-output voltage swing.
Disclosure of Invention
In view of this, the present application provides a compensation circuit and method for input/output voltage swing linearity, which reduces power consumption and enables the output voltage to satisfy the requirement of input/output voltage swing linearity, thereby ensuring that the input/output voltage swing linearity reaches a completely ideal state.
In order to achieve the above purpose, the present application provides the following technical solutions:
a compensation circuit for input-output voltage swing linearity, comprising: a listener, a control module, and a driver, wherein:
the monitor is used for monitoring the output voltage swing amplitude to be sent by the sending end;
the input end of the control module is connected with the monitor and used for obtaining a control instruction for adjusting the swing amplitude of the output voltage according to the requirement of the linearity of the swing amplitude of the input and output voltages;
the first input end of the driver is used for obtaining input voltage, and the second input end of the driver is connected with the output end of the control module and used for adjusting the output voltage swing according to the control instruction obtained by the control module to obtain output voltage meeting the requirement of linearity of the input and output voltage swing.
Preferably, the control module is a digital control module.
Preferably, the control instruction includes: increasing the amount by which the output voltage swing is increased; or a control instruction to reduce the output voltage swing and an amount by which the output voltage swing is reduced.
A method for compensating for output voltage swing linearity, applied to the compensation circuit for input and output voltage swing linearity, the compensation circuit comprising: a listener, a control module, and a driver, the method comprising:
monitoring the output voltage swing amplitude to be sent of a sending end through the monitor;
the control module obtains a control instruction for adjusting the swing of the output voltage according to the requirement of the linearity of the swing of the input and output voltages;
and the driver adjusts the output voltage swing according to the control instruction to obtain the output voltage meeting the requirement of the linearity of the input and output voltage swing.
Preferably, the control instruction is a digital control instruction, and includes: increasing the control command of the output voltage swing and the amount by which the output voltage swing is increased; or a control instruction to reduce the output voltage swing and an amount by which the output voltage swing is reduced.
According to the technical scheme, the input-output voltage swing linearity compensation circuit and the input-output voltage swing linearity compensation method are characterized in that firstly, the monitor monitors the output voltage swing to be sent of the sending end, then the control module obtains a control instruction for adjusting the output voltage swing according to the input-output voltage swing linearity requirement, and finally the driver adjusts the output voltage swing according to the control instruction to obtain the output voltage meeting the input-output voltage swing linearity requirement. The nonlinear compensation circuit utilizes nonlinearity caused by devices in the digital control compensation circuit, so that the input and output voltage swing linearity can reach a completely ideal state, and the output voltage processed by a circuit post-stage device can meet the input and output voltage swing linearity requirement through proper excessive compensation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a compensation circuit for input/output voltage swing linearity according to an embodiment of the present disclosure;
fig. 2 is a schematic flowchart of a method for compensating for input/output voltage swing linearity according to an embodiment of the present disclosure.
Detailed Description
The present application provides a compensation circuit and method for input/output voltage swing linearity, and the purpose of the invention is: how to reduce power consumption and make the output voltage meet the requirement of input and output voltage swing linearity, thereby ensuring that the input and output voltage swing linearity reaches a completely ideal state.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a digital compensation circuit for input/output voltage swing linearity, which is disclosed in an embodiment of the present application, and the compensation circuit includes: a listener 11, a control module 21 and a driver 31, wherein:
the listener 11 is configured to listen to an output voltage swing to be sent by the sending end.
The input end of the control module 21 is connected to the listener 11, and is configured to obtain a control instruction C for adjusting the swing of the output voltage according to the requirement of linearity of the swing of the input and output voltages.
In the technical solution disclosed in the embodiment of the present application, the control module 21 is a digital control module, and the control instruction C obtained by the control module 21 includes: increasing the control instruction of the output voltage swing and the amount of the output voltage swing; or a control command to reduce the output voltage swing and the amount by which the output voltage swing is reduced.
A first input of the driver 31 is used for deriving an input voltage VinA second input end of the controller is connected to the output end of the control module 21, and is used for adjusting the output voltage swing according to the control command C obtained by the control module 21 to obtain the output voltage V meeting the linearity of the input/output voltage swingout。
The embodiment of the present application provides a compensation circuit for input/output voltage swing linearity, which includes: monitor, control module and driver, wherein: the monitor is used for monitoring the output voltage swing amplitude to be sent by the sending end; the input end of the control module is connected with the monitor and used for obtaining a control instruction for adjusting the swing amplitude of the output voltage according to the requirement of the linearity of the swing amplitude of the input and output voltages; the first input end of the driver is used for obtaining input voltage, and the second input end of the driver is connected with the output end of the control module and used for adjusting the swing amplitude of the output voltage according to the control instruction obtained by the control module to obtain the output voltage meeting the requirement of the linearity of the swing amplitude of the input and output voltage.
According to the embodiment of the application, the monitor monitors the output voltage swing to be sent of the sending end, then the control module obtains a control instruction for adjusting the output voltage swing according to the requirement of the input and output voltage swing linearity, and finally the driver adjusts the output voltage swing according to the control instruction to obtain the output voltage meeting the requirement of the input and output voltage swing linearity. The nonlinear compensation circuit utilizes nonlinearity caused by devices in the digital control compensation circuit, so that the input and output voltage swing linearity can reach a completely ideal state, and the output voltage processed by a circuit post-stage device can meet the input and output voltage swing linearity requirement through proper excessive compensation.
The embodiment of the present application further discloses a compensation method for the swing linearity of the input and output voltage based on the compensation circuit for the swing linearity of the input and output voltage disclosed above, referring to fig. 2, and fig. 2 is a schematic flow diagram of the compensation method for the swing linearity of the input and output voltage disclosed in the embodiment of the present application, where the method is applied to the compensation circuit for the swing linearity of the input and output voltage, and the compensation circuit includes: the method specifically comprises the following steps:
step S201: and monitoring the output voltage swing amplitude to be transmitted by the transmitting end through the monitor.
In this embodiment, the output voltage swing to be sent by the sending end is configured by a register, and an address in the register is used to indicate the output voltage swing to be sent by the sending end. By monitoring the value of the address by the listener, the output voltage swing that the transmitting end is ready to transmit can be known.
Step S202: the control module obtains a control instruction for adjusting the swing of the output voltage according to the requirement of the linearity of the swing of the input and output voltages.
In an embodiment of the present application, the control instruction is a digital control instruction, including: increasing the control instruction of the output voltage swing and the amount of the output voltage swing; or a control command to reduce the output voltage swing and the amount by which the output voltage swing is reduced.
Step S203: the driver adjusts the output voltage swing according to the control instruction to obtain the output voltage meeting the requirement of the linearity of the input and output voltage swing.
It should be noted that the control command is also configured by a register, and an address in the register is used to indicate the control command, which is used to adjust the gain of the driver.
If the ratio of the current output voltage swing to the input voltage swing is lower than the linearity requirement, the gain of the driver is increased, and the output voltage swing is increased; if the ratio of the current output voltage swing to the input voltage swing is higher than the linearity requirement, the gain of the driver is reduced, and the output voltage swing is reduced at the moment. The specific adjustment amount needs to be determined according to the ratio of the output voltage swing to the input voltage swing and the difference of the linearity requirements.
In the embodiment of the application, the gain adjustment is mainly realized by configuring a control instruction through a register, wherein the control instruction is used for adjusting the gain of the driver, and the specific adjustment amount is determined according to the ratio of the swing of the output voltage to the swing of the input voltage and the difference between the requirements of linearity, so that the requirement of linearity on the swing of the input voltage and the swing of the output voltage can be completely met, and the control instruction can be used for excessively adjusting the gain of the driver, so that the output voltage processed by a circuit post-stage device can also meet the requirement of linearity.
The embodiment of the application provides a compensation method for output voltage swing linearity, which includes monitoring output voltage swing to be sent by a sending end through a monitor, obtaining a control instruction for adjusting the output voltage swing according to the requirement of the input and output voltage swing linearity by a control module, and finally adjusting the output voltage swing by a driver according to the control instruction to obtain output voltage meeting the requirement of the input and output voltage swing linearity. The embodiment of the application utilizes nonlinearity caused by devices in the digital control compensation circuit, so that the input and output voltage swing linearity can reach a completely ideal state, and the output voltage processed by a circuit post-stage device can meet the input and output voltage swing linearity requirement through proper excess compensation.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those skilled in the art will further appreciate that different methods may be used to implement the described functionality for each particular application, but such implementation should not be considered beyond the scope of the present application.
It is further noted that the above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A compensation circuit for input-output voltage swing linearity, comprising: a listener, a control module, and a driver, wherein:
the monitor is used for monitoring the output voltage swing amplitude to be sent by the sending end;
the input end of the control module is connected with the monitor and used for obtaining a control instruction for adjusting the swing amplitude of the output voltage according to the requirement of the linearity of the swing amplitude of the input and output voltages;
the first input end of the driver is used for obtaining input voltage, and the second input end of the driver is connected with the output end of the control module and used for adjusting the output voltage swing according to the control instruction obtained by the control module to obtain output voltage meeting the requirement of the linearity of the input and output voltage swing; the adjusting process specifically comprises the following steps: if the ratio of the current output voltage swing to the input voltage swing is lower than the linearity requirement, the gain of the driver is increased to increase the output voltage swing; and if the current ratio of the output voltage swing to the input voltage swing is higher than the linearity requirement, reducing the gain of the driver to reduce the output voltage swing.
2. The compensation circuit of claim 1, wherein the control module is a digital control module.
3. The compensation circuit of claim 1, wherein the control instructions comprise: increasing the control command of the output voltage swing and the amount by which the output voltage swing is increased; or a control instruction to reduce the output voltage swing and an amount by which the output voltage swing is reduced.
4. A method for compensating output voltage swing linearity, which is applied to the input and output voltage swing linearity compensating circuit of any one of claims 1-3, the compensating circuit comprising: a listener, a control module, and a driver, the method comprising:
monitoring the output voltage swing amplitude to be sent of a sending end through the monitor;
the control module obtains a control instruction for adjusting the swing of the output voltage according to the requirement of the linearity of the swing of the input and output voltages;
the driver adjusts the output voltage swing according to the control instruction to obtain output voltage meeting the requirement of linearity of the input and output voltage swing; the adjusting process specifically comprises the following steps: if the ratio of the current output voltage swing to the input voltage swing is lower than the linearity requirement, the gain of the driver is increased to increase the output voltage swing; and if the current ratio of the output voltage swing to the input voltage swing is higher than the linearity requirement, reducing the gain of the driver to reduce the output voltage swing.
5. The method of claim 4, wherein the control instructions are digital control instructions, comprising: increasing the control command of the output voltage swing and the amount by which the output voltage swing is increased; or a control instruction to reduce the output voltage swing and an amount by which the output voltage swing is reduced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210340267.XA CN114489226B (en) | 2022-04-02 | 2022-04-02 | Compensation circuit and method for input and output voltage swing linearity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210340267.XA CN114489226B (en) | 2022-04-02 | 2022-04-02 | Compensation circuit and method for input and output voltage swing linearity |
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| CN114489226A CN114489226A (en) | 2022-05-13 |
| CN114489226B true CN114489226B (en) | 2022-07-01 |
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| US3824491A (en) * | 1973-03-19 | 1974-07-16 | Motorola Inc | Transistor crystal oscillator with automatic gain control |
| CN202353537U (en) * | 2011-12-13 | 2012-07-25 | 四川和芯微电子股份有限公司 | Signal conditioning circuit |
| CN103312285A (en) * | 2013-05-23 | 2013-09-18 | 吴江圣博瑞信息科技有限公司 | Self-adaptive voltage gain control circuit for power line carrier driver |
| CN204517791U (en) * | 2015-04-03 | 2015-07-29 | 南京能瑞自动化设备股份有限公司 | A kind of automatic amplitude of oscillation calibration circuit of voltage controlled oscillator |
| CN110246468A (en) * | 2019-06-21 | 2019-09-17 | 昆山龙腾光电有限公司 | A kind of amplitude of oscillation adjustment driving device |
| CN213637719U (en) * | 2020-08-08 | 2021-07-06 | 深圳市禾川兴科技有限公司 | Output signal swing calibration circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201785B (en) * | 2010-03-23 | 2013-06-26 | 北京大学 | Ultra-low power consumption voltage-controlled oscillator circuit and signal processing method thereof |
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2022
- 2022-04-02 CN CN202210340267.XA patent/CN114489226B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824491A (en) * | 1973-03-19 | 1974-07-16 | Motorola Inc | Transistor crystal oscillator with automatic gain control |
| CN202353537U (en) * | 2011-12-13 | 2012-07-25 | 四川和芯微电子股份有限公司 | Signal conditioning circuit |
| CN103312285A (en) * | 2013-05-23 | 2013-09-18 | 吴江圣博瑞信息科技有限公司 | Self-adaptive voltage gain control circuit for power line carrier driver |
| CN204517791U (en) * | 2015-04-03 | 2015-07-29 | 南京能瑞自动化设备股份有限公司 | A kind of automatic amplitude of oscillation calibration circuit of voltage controlled oscillator |
| CN110246468A (en) * | 2019-06-21 | 2019-09-17 | 昆山龙腾光电有限公司 | A kind of amplitude of oscillation adjustment driving device |
| CN213637719U (en) * | 2020-08-08 | 2021-07-06 | 深圳市禾川兴科技有限公司 | Output signal swing calibration circuit |
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| CN114489226A (en) | 2022-05-13 |
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