HA-2620/2625 are bipolar operational amplifiers that featurevery high input impedance (500MΩ, HA-2620) coupled withwideband AC performance. The high resistance of the inputstage is complemented by low offset voltage (0.5mV,HA-2620) and low bias and offset current (1nA, HA-2620) tofacilitate accurate signal processing. Input offset can bereduced further by means of an external nullingpotentiometer. The 100MHz gain bandwidth product(HA-2620/2625 are stable for closed loop gains greater than5), 35V/μs slew rate and 150kV/V open loop gain enablesHA-2620/2625 to perform high gain amplification of very fast,wideband signals. These dynamic characteristics, coupledwith fast settling times, make these amplifiers ideally suitedto pulse amplification designs as well as high frequency(e.g., video) applications. The frequency response of theamplifier can be tailored to exact design requirements bymeans of an external bandwidth control capacitor connectedfrom the Comp pin to GND.In addition to its application in pulse and video amplifierdesigns, HA-2620/2625 is particularly suited to other highperformance designs such as high-gain low distortion audioamplifiers, high-Q and wideband active filters and highspeedcomparators. For more information, please refer toApplication Notes AN509, AN519 and AN546.
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