戴维南等效电路寻找基于 EPOT 的偏置电阻网络

摘要： 本应用程序说明解释如何为基于电控电位器 （EPOT） 偏置的电阻网络找到的戴维南等效电路。

Maxim > App Notes > Digital Potentiometers General Engineering Topics
Keywords: EPOT, Thevenin equivalent Sep 17, 2001

APPLICATION NOTE 804
Finding the Thevenin Equivalent Circuit for the EPOT-Based Offset
Resistor Network


Abstract:This application note explains how to find the Thevenin equivalent circuit for an offset resistor network based on an
electronically controlled potentiometer (EPOT).

Additional Information: EPOT Applications: Offset Adjustment in Op-Amp Circuits

To model the network shown below in Figure 1 as the Thevenin equivalent shown below in Figure 2, find the Thevenin Voltage
(Vth ) and the Thevenin Resistance (Rth ). In this case, Vth is the same as Vos