Analog Operation Circuit for Multiplication and Division

Solution Overview

Problem

Existing digital circuits and hardware for multiplication and division operations are complex, making them cumbersome to implement effectively.

Innovation Solution

An operation circuit comprising a capacitor charging/discharging module and an error amplification module, which receive analog signals and output a target signal based on predefined mathematical relationships, allowing for simplified multiplication and division operations through stepwise approximation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If digital circuits are used for multiplication and division operations, then computational precision is improved, but device complexity increases

Engineering Contradiction:

Improvecomputational precisionVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces complex digital circuit implementations with an analog operational amplifier-based circuit system. The operational amplifier continuously adjusts the output voltage to maintain the inverting input at virtual ground, naturally performing multiplication and division operations through feedback mechanisms rather than discrete digital logic gates.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The operational amplifier circuit serves multiple functions simultaneously - it performs both multiplication and division operations using the same core circuitry. By configuring the input signals and feedback elements appropriately, the single circuit can compute A×B, A÷B, or other mathematical relationships without requiring separate dedicated circuits for each operation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If digital circuits are used for multiplication operation, then calculation accuracy is improved, but ease of operation deteriorates

Engineering Contradiction:

Improvecalculation accuracyVSAvoidease of operation

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent replaces cumbersome digital circuit implementations with an analog operational amplifier-based circuit system. The operational amplifier continuously adjusts the output voltage to maintain the inverting input at virtual ground, naturally performing multiplication and division operations through feedback mechanisms rather than discrete digital logic gates.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If digital circuits are used for division operation, then computational precision is improved, but device complexity increases

Engineering Contradiction:

Improvecomputational precisionVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The operational amplifier circuit serves multiple functions simultaneously - it performs both multiplication and division operations using the same core circuitry. By configuring the input signals and feedback elements appropriately, the single circuit can compute A×B, A÷B, or other mathematical relationships without requiring separate dedicated circuits for each operation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent replaces complex digital circuit implementations with an analog operational amplifier-based circuit system. The operational amplifier continuously adjusts the output voltage to maintain the inverting input at virtual ground, naturally performing multiplication and division operations through feedback mechanisms rather than discrete digital logic gates.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS20230046618A1Operation circuit and chip

Publication Date: 2023.02.16 SHANGHAI BRIGHT POWER SEMICONDUCTOR CO LTD

AI summary

An operation circuit and a chip pertaining to the field of integrated circuit design technology are disclosed by the present invention. The circuit includes a capacitor charging/discharging module and an error amplification module electrically connected to the capacitor charging/discharging module. The capacitor charging/discharging module is configured to receive first, second and third signals external to the capacitor charging/discharging module, and to output a reference signal and a feedback signal. The error amplification module is configured to receive the reference and feedback signals and output a target signal to the capacitor charging/discharging module based on the received reference and feedback signals. The first, second and third signals are all analog signals, and in a steady state, values of the target, first, second and third signals satisfy a predefined mathematical relationship.