The AD9631ARZ is a wide bandwidth single Voltage Feedback Operational Amplifier for use with pin diode receivers. Using voltage feedback architecture, the exceptional settling time, bandwidth and low distortion of the AD9631 meet the requirements of many applications that previously depended on current feed-back amplifiers. Its classical op amp structure works much more predictably in many designs. A proprietary design architecture has produced an amplifier that combines many of the best characteristics of both current feedback and voltage feedback amplifier. The AD9631 exhibits exceptionally fast and accurate pulse response (16ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and ultralow distortion. The AD9631 achieves -72dBc at 20MHz, 320MHz small signal bandwidth and 175MHz large signal bandwidth. These characteristics position the AD9631 ideally for driving flash as well as high resolution ADCs.