资料介绍
理想放大器的反馈电阻通常假设表现为完美的匹配性能,实际中电阻的非理想性会影响电路多种参数性能,例如共模拟制比(CMRR)、谐波干扰和稳定性。本文探讨了LT5400厚膜电阻在放大器LTC6362中对CMRR、谐波干扰和稳定性等方面的影响,同时与其它类型电阻的影响作了比较。Matched Resistor Networks for Precision Amplier Applications
Design Note 502
Tyler Hutchison
Introduction
R2
Some ideal op amp congurations assume that the 1k
feedback resistors exhibit perfect matching. In practice, R1 5V
3.3nF
5k