Compensation circuit and chip, method, apparatus, storage medium, and electronic device
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Solution Overview
Problem
Existing technologies face challenges in achieving comprehensive linearity compensation in analog signal processing circuits due to the lack of consideration for nonlinearity sources and influencing factors, resulting in large deviations in linearity compensation and poor reliability.
Innovation Solution
A compensation circuit and method that includes an analog module and a linearity compensation module with multiple transconductance units. The linearity compensation module configures combinations of transconductance units based on configuration signals to provide compensation signals, effectively addressing nonlinearity issues across various positions in the analog module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional linearity compensation schemes are used, then the design difficulty and cost of OTA are reduced, but the linearity compensation accuracy deteriorates due to lack of comprehensive consideration of nonlinearity sources
Solution Approach 1:
The patent segments the linearity compensation process by dividing nonlinearity sources into multiple categories (input signal nonlinearity, output signal nonlinearity, and intermediate node nonlinearity). Each category is compensated independently through separate compensation circuits, allowing comprehensive coverage of all nonlinearity sources while maintaining manageable design complexity
Solution Approach 2:
The patent changes the compensation approach by introducing multiple configuration signals that can independently control different compensation circuits. This allows dynamic adjustment of compensation parameters based on the specific nonlinearity sources present, significantly improving compensation accuracy without overwhelming design complexity
2Measurement precision
If comprehensive linearity compensation is implemented by considering all nonlinearity sources, then linearity compensation accuracy improves, but device complexity increases
Solution Approach 1:
The compensation circuit is segmented into multiple independent modules, each targeting a specific nonlinearity source. This modular approach allows comprehensive compensation while keeping each individual circuit block simple and manageable
Solution Approach 2:
The patent designs universal compensation circuits that can handle multiple types of nonlinearity through configuration signals. The same compensation circuit structure can be applied to different nonlinearity sources by adjusting the configuration, reducing overall device complexity
3Reliability
If multiple nonlinearity sources are compensated simultaneously, then reliability of linearity compensation improves, but the number of configuration signals and control complexity increases
Solution Approach 1:
The control system is segmented into multiple independent configuration signal generators, each responsible for controlling a specific compensation circuit. This segmentation allows reliable simultaneous compensation of multiple nonlinearity sources while keeping the control logic for each signal simple and independent
Solution Approach 2:
The compensation circuits are designed to automatically activate or deactivate based on the presence of specific nonlinearity sources, reducing the need for complex external control logic. The system self-regulates the compensation level for each nonlinearity source
Data Source
AI summary
A compensation circuit, chip, method and device, a storage medium, and an electronic device are disclosed. The compensation circuit may include an analog module (102) including an input node (1022) and an output node (1024), wherein the input node (1022) is configured to receive an input signal and the output node (1024) is configured to output an output signal; and a linearity compensation module (104) including a plurality of transconductance units (1042), where the plurality of transconductance units (1042) are configured to acquire a first configuration signal and configure a combination of the plurality of transconductance units (1042) based on the first configuration signal to provide a compensation signal to the output node (1024), and the first configuration signal is configured to indicate a signal at any position in the analog module (102).