资料介绍
运放和信号整形 AMPLIFIERS FOR SIGNAL CONDITIONING
SECTION 3
AMPLIFIERS FOR SIGNAL CONDITIONING
Walt Kester, James Bryant, Walt Jung
INTRODUCTION
This section examines the critical parameters of amplifiers for use in precision signal
conditioning applications. Offset voltages for precision IC op amps can be as low as
10V with corresponding temperature drifts of 0.1V/C. Chopper stabilized op amps
provide offsets and offset voltage drifts which cannot be distinguished from noise.
Open loop gains greater than 1 million are common, along with common mode and
power supply rejection ratios of the same magnitude. Applying these precision
amplifiers while maintaining the amplifier performance can present significant
challenges to a design engineer, i.e., external pass
我要上传