BUY UPC1555C https://www.utsource.net/itm/p/1095663.html
Timer circuit
Description: The UPC1555C is a dual operational amplifier manufactured by NEC. Features: High gain bandwidth product: 1.0 MHz Low input bias current: 0.5 nA Low input offset voltage: 0.5 mV Low noise voltage: 5.0 μV High slew rate: 0.2 V/μs Low distortion: 0.0003% Wide supply voltage range: ±2.5 to ±18 V Applications: The UPC1555C is suitable for use in audio preamplifiers, audio power amplifiers, active filters, and other signal processing applications. (For reference only)