稳定的互阻放大器

摘要：互阻放大器（TIA）被广泛用于转换电流输出的传感器，如光电二极管的电压信号，因为许多电路和仪器只能接受电压输入。与一个反馈电阻从输出到反相输入的运算放大器是最简单的实现这样一个TIA。然而，即使这样简单的TIA电路之间的噪声增益，失调电压，带宽和稳定性需要仔细权衡。显然，在TIA的稳定是必不可少的好，性能可靠。本应用笔记介绍了评估稳定的经验计算，然后显示如何微调反馈相位补偿电容的选择。Maxim>DesignSupport>TechnicalDocuments>Tutorials>AmplifierandComparatorCircuits>APP5129Maxim>DesignSupport>TechnicalDocuments>Tutorials>Sensors>APP5129Keywords:TIA,transimpedanceamplifier,transimpedanceamp,photodiode,medicalinstrumentation,industrialcontrol,piezo-sensorinterface,TIAstability,feedbackcapacitance,phasecompensation,bodeplotFeb03,2012TUTORIAL5129StabilizeYourTransimpedanceAmplifierBy:AkshayBhat,SeniorStrategicApplicationsEngineerFeb03,2012Abstract:Transimpedanceamplifiers(TIAs)arewidelyusedtotranslatethecurrentoutputofsensorslikephotodiode-to-voltagesignals,sincema