Matched Resistor Networks for Precision Amplifier Applications

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。MatchedResistorNetworksforPrecisionAmplierApplicationsDesignNote502TylerHutchisonIntroductionR2Someidealopampcongurationsassumethatthe1kfeedbackresistorsexhibitperfectmatching.Inpractice,R15V3.3nF5k