BUY LM397MFX https://www.utsource.net/itm/p/11582702.html

Description: LM397MFX is a low power, low voltage, dual operational amplifier with rail-to-rail input and output. Features: - Low power consumption: 1.2mA/amplifier - Low voltage operation: 2.7V to 5.5V - Rail-to-rail input and output - High output current: 100mA - Low input offset voltage: 2mV - Low input bias current: 10nA Applications: - Battery-powered systems - Portable instrumentation - Portable medical equipment - Automotive applications - Industrial process control (For reference only)