Integrated Circuit Function Pin Parameter Setting
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Solution Overview
Problem
Conventional methods for setting function parameters in integrated circuits, such as voltage-dividing and parallel resistance methods, face limitations in detection accuracy and range of resistance value setting intervals, with the parallel resistance method being confined within specific ranges and sacrificing some resistance value intervals when used with the voltage-dividing method.
Innovation Solution
An integrated circuit with a function pin, switch unit, and function adjustment circuit that includes multiple current sources and logic units, allowing for switching between different current sources based on voltage detecting values to expand the range of resistance value setting intervals and maintain detection accuracy by using both voltage-dividing and parallel resistance methods simultaneously.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the parallel resistance setting method is used, then the range of resistance value setting intervals is limited, but the detection accuracy is maintained
Solution Approach 1:
The detection process is divided into multiple segments by using different current sources for different resistance ranges. The first current source is used for lower resistance intervals while the second current source is used for higher resistance intervals, allowing the system to maintain detection accuracy across a broader range of resistance values without compromising precision in any single segment.
Solution Approach 2:
The patent changes the detection parameter by switching between different current sources with different current values. By adjusting the current parameter based on the resistance range being measured, the system can adapt to different resistance intervals while maintaining optimal detection accuracy for each range, thus resolving the contradiction between limited range and maintained precision.
2Measurement precision
If the voltage-dividing setting method is used, then the detection accuracy on setting intervals is improved, but some resistance value setting intervals are sacrificed
Solution Approach 1:
The patent creates a universal detection system that can handle multiple resistance value settings by combining both voltage-dividing and parallel resistance methods. The function adjustment circuit is designed to perform multiple functions: it can operate in voltage-dividing mode for certain intervals and switch to parallel resistance mode for other intervals, making the system adaptable to all resistance ranges without sacrificing any intervals while maintaining detection accuracy.
Solution Approach 2:
The system dynamically switches between different detection methods and current sources based on the resistance value being measured. The switch unit changes the circuit configuration in real-time according to the detected resistance range, allowing the system to maintain high detection accuracy across all resistance intervals by adapting its operation mode to match the specific measurement requirements of each interval.
3Reliability
If the parallel resistance setting method is used with larger resistance values, then the difference of parallel resistance setting values of adjacent setting intervals is increased for design security, but the range of applicable setting intervals is limited
Solution Approach 1:
The detection range is segmented into multiple intervals, each handled by appropriate current sources. By dividing the resistance range into segments and assigning specific current sources to each segment, the system can maintain adequate resolution and design security within each segment while collectively covering a much broader overall range of resistance values, thus resolving the contradiction between range and reliability.
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
The integrated circuit can detect more resistance value setting intervals, expanding the range of applicable resistance values and maintaining detection accuracy, thereby combining the advantages of both voltage-dividing and parallel resistance setting methods without sacrificing any intervals.
Implementation Method 1
The first current source is made to flow into or flow out of the external setting unit through the function pin. The function adjustment circuit is used to detect a first voltage detecting value at the function pin.
Implementation Method 2
the second current source is made to flow into or flow out of the external setting unit through the function pin, a second voltage detecting value at the function pin is detected
Data Source
AI summary
A method with function parameter setting and an integrated circuit using the same are provided. The integrated circuit includes a function pin coupled to an external setting unit, a switch unit, and first and second function adjustment circuits. The first function adjustment circuit includes first and second current sources. The second function adjustment circuit detects a percentage of a divided voltage at the function pin, to provide a reference value and to set a second function parameter. The first function adjustment circuit uses the first current source to detect a first voltage detecting value at the function pin, and compares the first voltage detecting value with a default value. The switch unit switches the first and second current sources according to a compare result. The present invention adopts an integrated circuit for switching a plurality of current sources and detections, and may determine more resistance value setting intervals.