关键词: 硬件测试, 运算放大器, 电压跟随器, 电压比较器

Abstract: With the developing of technology,the functionality,reliability and stability of hardware chips are critical,so that the hardware testingis getting more and more attention.In the test process,testing engineers will make use of the auxiliary circuit based on the external circuit according to the testing difficulty to improve the accuracyandstability.OpAmpcircuitisthe commonlytestingauxiliarycircuit.Accordingto the characteristics and functions of different Op Amp circuits,this paper describes the application of operational amplifiers,voltage followers and voltage comparators in test system when the test difficulties are encountered,so that can improve the testaccuracyeffectively.

Key words: hardware testing, operational amplifier, voltage follower, voltage comparators