AD9631ANZ

The AD9631/AD9632 are very high speed and wide bandwidth amplifiers. The AD9631 is unity gain stable. The AD9632 is stable at gains of 2 or greater. Using a voltage feedback architecture, the exceptional settling time, bandwidth, and low distortion of the AD9631/AD9632 meet the requirements of many applications that previously depended on current feedback 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 amplifiers. The AD9631/AD9632 exhibit exceptionally fast and accurate pulse response (16 ns to 0.01%) as well as extremely wide small signal and large signal bandwidth and ultralow distortion. The AD9631 achieves −72 dBc at 20 MHz, 320 MHz small signal bandwidth, and 175 MHz large signal bandwidths. These characteristics position the AD9631/AD9632 ideally for driving flash as well as high resolution ADCs. Additionally, the balanced high impedance inputs of the voltage feedback architecture allow maximum flexibility when designing active filters. The AD9631/AD9632 are offered in the industrial (-40℃ to +85℃) temperature range. They are available in PDIP and SOIC.

Applications

• ADC input driver
• Differential amplifiers
• IF/RF amplifiers
• Pulse amplifiers
• Professional video
• DAC current to voltage
• Baseband and video communications
• Pin diode receivers
• Active filters/integrators/log amps

Key features

• Wide bandwidth AD9631, G = +1; AD9632, G = +2
• Small signal AD9631, 320 MHz; AD9632, 250 MHz
• Large signal (4 V p-p) AD9631, 175 MHz; AD9632, 180 MHz
• Ultralow distortion (SFDR), low noise: −113 dBc typical @ 1 MHz; −95 dBc typical @ 5 MHz; −72 dBc typical @ 20 MHz; 46 dBm third-order intercept @ 25 MHz; 7.0 nV/√Hz spectral noise density
• High speed: Slew rate: 1300 V/μs; Settling time to 0.01%, 2 V step: 16 ns
• ±3 V to ±5 V supply operation
• 17 mA supply current