Voltage Reference Circuit With Adjustable Temperature Gradient
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Solution Overview
Problem
Semiconductor devices face challenges in compensating for temperature-dependent characteristics, requiring a voltage generation circuit that can adjust these variations effectively.
Innovation Solution
A voltage generation circuit is designed with first and second variable resistors connected in series, generating currents with different temperature-dependent characteristics, allowing for the adjustment of output voltage and temperature gradients by controlling the resistor values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a voltage generation circuit is designed to compensate for temperature-dependent characteristics, then the ability to adjust temperature-dependent characteristics is improved, but the device complexity increases
Solution Approach 1:
The voltage generation circuit is divided into multiple independent current generation circuits (first current generation circuit and second current generation circuit), each responsible for generating currents with specific temperature-dependent characteristics. This segmentation allows independent adjustment of each current's temperature characteristics while keeping the overall circuit structure manageable and modular.
2Adaptability or versatility
If variable resistors are used to adjust output voltage and temperature gradient, then the adaptability is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The circuit employs variable resistors that can dynamically adjust their resistance values to compensate for temperature-dependent characteristics. This dynamic adjustment capability allows the circuit to adapt to different temperature conditions and maintain optimal performance across varying temperatures, with the variable resistors serving as adjustable parameters that can be tuned during operation or manufacturing.
Data Source
AI summary
A voltage generation circuit generates a first current having a first temperature-dependent characteristic in which a current value thereof changes with a predetermined change in temperature, and a second current having a second temperature-dependent characteristic different from the first temperature-dependent characteristic. The voltage generation circuit includes a first variable resistor and a second variable resistor connected in series. The second current flows through the first variable resistor, and a third current having a current value that is based on a difference between a current value of the first current and a current value of the second current, flows through the second variable resistor.