ENHANCED_OP_AMP_BALANCED_AMPLIFIER

Published:2009/6/22 23:29:00 Author:May | From:SeekIC

The classic single op-amp balanced circuit works well in low-source-impedartce configurations, but tends to struggle in higher-source-imp edance applications because of the varying input impedance of the inputs referred to ground. A modified version of the classic op-amp configuration of the figure uses a different set of formulas to determine the resistor values. It equalizes the impedance of both inputs by considering the op amp's active participation.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Amplifier_Circuit/ENHANCED_OP_AMP_BALANCED_AMPLIFIER.html

Print this Page | Comments | Reading(3)