BUY ICL8069DMSQ https://www.utsource.net/itm/p/1365325.html
Low-Voltage Reference
Description: The ICL8069DMSQ is a low power, low voltage, CMOS, dual operational amplifier. Features: Low voltage operation: 2.7V to 5.5V Low power consumption: 1.2mA/amplifier High input impedance: 1.2MΩ High output current: ±20mA Low offset voltage: ±2mV Low noise: 4nV/√Hz High slew rate: 0.3V/μs High common-mode rejection ratio: 80dB Low distortion: 0.01% Applications: Audio signal processing Instrumentation amplifiers Active filters Voltage followers High speed comparators Low power applications (For reference only)