Adaptive Range Resistance Test Method

A technology of resistance testing and adaptability, applied in the direction of measuring resistance/reactance/impedance, measuring electrical variables, measuring devices, etc., can solve problems such as different voltage ranges, different resistance types, and insufficient resolution, so as to reduce test errors, The effect of meeting the process needs and improving the measurement accuracy

Active Publication Date: 2017-02-22
CSMC TECH FAB2 CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

[0003] The test resolution of the Ag4070 machine is related to the set range value. Due to process fluctuations and different types of resistors, it is difficult to grasp the resistance value, so the measured voltage range is different. The resolution of the test output value is related to the range setting, and the range setting is not appropriate. will lead to large errors
Existing test methods can meet the device requirements, but the resolution is insufficient and the error is large, resulting in poor test uniformity

Method used

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0026] ginseng figure 1 Shown, a kind of adaptive range resistance testing method of the present invention, it comprises the following steps:

[0027] S1, pass the current I through the resistor a , so that a voltage difference is formed across the resistor, and the test range is set to V lim1 . One end (high end) of the resistor is...

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Abstract

The invention discloses a self-adaptive range resistance test method comprising the following steps: S1. current Ia is piped onto a resistor so that voltage difference is formed on the two ends of the resistor, and a test range is arranged to be Vlim1; S2. voltage difference Va1 of the two ends of the resistor is measured under the current Ia; S3. current Ib is piped onto the resistor so that voltage difference is formed on the two ends of the resistor, and a new test range Vlim2 is arranged with Va1 as a base number, wherein Va1, Ib, Va1 and Ia meet that Vlim2 / Ib > / = Va1 / Ia; S4. voltage difference Va2 of the two ends of the resistor is measured under the current Ib; and S5. a resistance value of the two ends of the resistor is calculated and outputted according to Ib and Va2. Under the situation that voltage is ensured not to surpass the range, resolution in voltage measurement is enhanced, resistance measurement precision is enhanced, an error in a resistance test is reduced and technology demands are met.

Description

technical field [0001] The invention relates to the technical field of resistance testing, in particular to an adaptive range resistance testing method. Background technique [0002] The existing method for testing resistance at both ends of well resistance, hole resistance, and square resistance is: add current at any end (high end), ground the other end (low end), and set the range of each end. After waiting for 0.1 second, measure the high-end voltage value, resistance = voltage / current / coefficient, where the coefficient can be set according to the actual situation, generally related to the number and width-to-length ratio. [0003] The test resolution of the Ag4070 machine is related to the set range value. Due to process fluctuations and different types of resistors, it is difficult to grasp the resistance value, so the measured voltage range is different. The resolution of the test output value is related to the range setting, and the range setting is not appropriate. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/14
Inventor 陈寒顺连晓谦
Owner CSMC TECH FAB2 CO LTD
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