Title :
Phase compensation of the three op amp instrumentation amplifier
Author_Institution :
Phys. & Eng. Lab., DSIR, Lower Hutt, New Zealand
Abstract :
The frequency stability of the popular three-op-amp instrumentation amplifier is discussed. It is shown that the two input-stage amplifiers of the conventional circuit should be compensated for unity gain. A simple modification to the circuit that allows the use of uncompensated amplifiers is demonstrated.
Keywords :
compensation; frequency stability; instrumentation amplifiers; operational amplifiers; frequency stability; instrumentation amplifier; phase compensation; uncompensated amplifiers; Noise; Noise measurement; Operational amplifiers; Phase measurement; Phase shifters; Radio frequency; Rotors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.1987.6312800
