Voltage-Responsive IC Resistance Switching for Circuit Discrimination
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Solution Overview
Problem
Existing semiconductor integrated circuits with similar external characteristics make it difficult to discriminate between different types during testing.
Innovation Solution
A semiconductor integrated circuit design that includes a switching circuit with transistors and resistive elements, where the resistance value between terminals changes with input voltage, allowing for distinct current values to be set and differentiated based on power supply voltage, facilitating easy discrimination between circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If externally tested semiconductor integrated circuits have similar characteristics, then discrimination between different types becomes difficult, but increasing test voltage to improve discrimination may cause operational instability
Solution Approach 1:
The patent changes the electrical parameter (resistance value) of the semiconductor integrated circuit by applying different voltage levels. By applying a first voltage level that activates a switching circuit, the resistance value changes, enabling discrimination between different circuit types. This allows accurate discrimination without using excessively high voltages that would compromise operational stability.
2Ease of operation
If discrimination between semiconductor integrated circuits is made easier, then testing becomes simpler, but it may require higher voltages that reduce operational stability
Solution Approach 1:
The patent uses controlled voltage level changes to modify resistance values, providing clear discrimination between different circuit types during testing. This approach simplifies the testing process by creating distinct measurable characteristics while maintaining voltage levels within safe operational ranges, thus preserving circuit stability.
Solution Approach 2:
The patent employs a dynamic switching circuit that changes its resistance value in response to applied voltage levels. This dynamic behavior enables easy discrimination between different circuit types during testing while the circuit remains stable during normal operation at different voltage conditions.
Data Source
AI summary
A semiconductor integrated circuit includes a first terminal and a second terminal. A resistance value between the first terminal and the second terminal changes with a change of an input voltage which is externally input.