A Variable Gain Amplifier with a Microcomputer Interface Based on AD7542 and OP467
HE Bi-shenga · Electrical Measurement & Instrumentation · 2005
This paper introduces a kind of variable gain amplifier with a microcomputer interface based on a single-chip D/A converter AD7542 and an integrated operational amplifier chip OP467. The electric circuit principle is described. The encoding relation test and gain linearity test for that variable gain amplifier are introduced,and the test result is analyzed.