BUY KIA7310P https://www.utsource.net/itm/p/981752.html
BIPOLAR LINEAR INTEGRATED CIRCUIT (VOLTAGE DETECTOR)
Description: KIA7310P is a dual operational amplifier manufactured by KEC. Features: Low noise: 2.5nV/√Hz High gain bandwidth product: 1.3MHz High slew rate: 13V/μs Low offset voltage: 0.5mV Low input bias current: 1nA Low power consumption: 1.2mA Application: KIA7310P is suitable for audio pre-amplifier, active filter, and other signal conditioning applications. (For reference only)