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BUY NE521N https://www.utsource.net/itm/p/11242350.html
IC COMP DUAL DIFF 14DIP
Description: The NE521N is a dual operational amplifier from Philips Semiconductors. It is a monolithic integrated circuit with two independent, high gain, internally frequency compensated operational amplifiers. Features: Low noise High input impedance High open-loop gain High slew rate Low power consumption Low offset voltage Low distortion High common-mode rejection ratio High output current capability Applications: Active filters Audio amplifiers Instrumentation amplifiers DC servo amplifiers Voltage followers Differential amplifiers Voltage comparators Voltage regulators (For reference only)