BUY HA244 https://www.utsource.net/itm/p/1036829.html

Description: HA244 is a high-performance, low-power, low-voltage, quad operational amplifier from Texas Instruments. Features: * Low power consumption: 1.2 mA/amplifier * Low voltage operation: 2.7 V to 5.5 V * High output current: 20 mA * High common-mode rejection ratio: 90 dB * High slew rate: 0.5 V/μs * Low noise: 4.5 nV/√Hz Applications: * Portable and battery-powered applications * Active filters * Signal conditioning * Sensor signal amplification * Data acquisition systems (For reference only)