EPOT应用：偏移调整的运算放大器电路

摘要：在一些电子系统，将有助于在输入电压直流偏置输出一个重要的错误。在高增益配置，这是特别真实。偏移调整电路，可添加到“空”出来的偏移电压，高增益的阶段，甚至与实际运放电路中重要的输入失调电压。

Maxim > App Notes > Amplifier and Comparator Circuits Digital Potentiometers

Keywords: offset adjust, offset adjustment, op amp, nulling circuits, nulling op amps, DC offset voltage, Sep 17, 2001
opamps

APPLICATION NOTE 803
EPOT Applications: Offset Adjustment in Op-Amp Circuits

Abstract: In some electronic systems, a DC offset voltage at the inputs will contribute a significant error to the
output. This is especially true in high gain configurations. An offset adjustment circuit can be added to "null"
out the offset voltage, making high gain stages practical even with significant input offset voltages found in op
amp circuits.

Electronic Potentiometers (EPOTS) offer designers the opportunity to control a resistance via a digital interface
and can be used in place of mechanical