Experimental Design of Programmable Amplifier Based on Op-amp and Analog Switch
Programmable amplifiers are common devices used in electronic measurement to extend the range of input signals.Sin-gle-chip programmable amplifiers are highly integrated and expensive,and students have little understanding of their internal structure.The experimental design uses general-purpose operational amplifier and analog switch to implement a 4-stage range pro-grammable amplifier.Students can better understand the operating principle of the programmable amplifier through this experi-ment,which is beneficial to improve students'engineering practice and innovation ability and expand the depth and breadth of ex-perimental teaching.In addition,the programmable amplifier designed in this paper is low cost and stable,which can be used as an emergency solution in some scenarios,such as the National Undergraduate Electronics Design Contest.
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维普
