Amplifier Circuit Switching for Low Residual Voltage
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Solution Overview
Problem
Existing amplifier circuits face challenges in efficiently reducing residual voltage over a sequence of residue-reduction steps, particularly at high accuracy levels, due to issues such as saturation, high settling time, and charge leakage, which affect their dynamic behavior and accuracy.
Innovation Solution
The amplifier circuit employs a switching network to control operational configurations, utilizing multiple residue-reduction storage units and capacitors to sequentially charge and store residual voltages across capacitors, reducing the residual offset through successive steps, requiring only a few residue-reduction steps to achieve low global residual voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional amplifier circuits are used to reduce residual voltage, then the circuit structure is simple, but the accuracy is insufficient and saturation occurs
Solution Approach 1:
The amplifier circuit is divided into multiple stages (first amplifier stage, second amplifier stage) with each stage having dedicated storage units (first-stage residue-reduction storage unit, final-stage residue-reduction storage unit). This segmentation allows progressive reduction of residual voltage through multiple steps, preventing saturation while improving accuracy.
Solution Approach 2:
The storage units are configured to store residual voltages before they accumulate to saturation levels. By performing preliminary storage of residual voltages in the first-stage and final-stage storage units, the circuit prevents saturation from occurring in the main amplifier stages.
2Measurement precision
If multiple residue-reduction steps are implemented, then accuracy is improved, but the settling time increases
Solution Approach 1:
The residue reduction process is segmented into distinct stages with dedicated storage units. The first-stage storage unit handles initial residual voltage storage, while the final-stage storage unit handles subsequent reduction, allowing parallel processing that reduces overall settling time compared to sequential processing.
Solution Approach 2:
The storage units act as intermediaries between the amplifier stages, temporarily holding residual voltages without blocking the main signal path. This intermediary approach allows the amplifier to continue operating while residual voltages are being managed, reducing the impact on settling time.
3Measurement precision
If more amplifier stages are added to reduce residual voltage, then accuracy is improved, but the device complexity increases
Solution Approach 1:
The storage units serve multiple functions: they store residual voltages from the first amplifier stage, provide feedback to reduce offset, and can be reconfigured between different operational modes. This multi-functionality reduces the need for additional dedicated components, maintaining lower device complexity while achieving high accuracy.
Solution Approach 2:
The first-stage residue-reduction storage unit and final-stage residue-reduction storage unit are merged into a coordinated system where the output of one feeds into the other. This merging allows two stages of residue reduction to be achieved with a unified structure rather than requiring separate independent systems, reducing overall complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively reduces global residual voltage to a very low level with minimal stages, enhancing accuracy and reducing the need for frequent recalibration, while maintaining efficient signal processing capabilities.
Implementation Method 1
each comprise a first capacitor that is connected to the first amplifier stage input terminal and a second capacitor that is connected to the second amplifier stage input terminal
Data Source
AI summary
An amplifier circuit comprising: a first-stage residue-reduction storage unit; a final-stage residue-reduction storage unit; and a switching network. The switching network is operable to control the amplifier circuit according to the following operational configurations: a first residue-reduction configuration; a second residue-reduction configuration; and an operational configuration. Such an amplifier circuit uses a low number of residue-reduction steps to reduce global residual voltage to a very low level when the amplifier circuit is subsequently used in the operational configuration.