AD9631

Features:

Wide Bandwidth AD9631, G = +1 AD9632, G = +2
Small Signal 320 MHz 250 MHz
Large Signal (4 V p-p) 175 MHz 180 MHz
Ultralow Distortion (SFDR), Low Noise
113 dBc typ @ 1 MHz
95 dBc typ @ 5 MHz
72 dBc typ @ 20 MHz
+46 dBm 3rd Order Intercept @ 25 MHz 7.0 nV/Hz Spectral Noise Density High Speed
Slew Rate 1300 V/s
Settling 16 ns to 0.01%, 2 V Step ±3 V to ±5 V Supply Operation




Pinout






Specifications

SupplyVoltage . . . . . . . . . . . . . . . . . . . . . . .................. . . . . . . . . . 12.6 V
Voltage Swing * Bandwidth Product . . . . . . . ................. . .550 V * MHz
nternal Power Dissipation
PlasticPackage (N) . . . . . . . . . . . . . . . . . . . . ..................... . . . 1.3 Watts
Small OutlinePackage (R) . . . . . . . . . . . . . ..................... . . . . . 0.9 Watts
nput Voltage (Common Mode) . . . . . . . . . .................... . . . . . . . . . . ±VS
Differential InputVoltage . . . . . . . . . . . . . .................. . . . . . . . . . ±1.2 V
Output Short Circuit Duration . . . . . . . . Observe Power Derating Curves
Storage Temperature Range N, R . . . . . .............. . . .65°C to +125°C
Operating Temperature Range (A Grade) . ............... . 40°C to +85°C
Lead Temperature Range (Soldering10sec) . . . ................. . . . . +300°C




Description

The AD9631 and AD9632 are very high speed and wide band- width amplifiers. They are an improved performance alternative to the AD9621 and AD9622. The AD9631 is unity gain stable. The AD9632 is stable at gains of two or greater. Utilizing a voltage feedback architecture, the AD9631/AD9632's excep-
tional settling time, bandwidth, and low distortion meet the requirements of many applications which 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 feed- back and voltage feedback amplifiers. The AD9631 and 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 and 320 MHz small signal 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 archi- tecture allow maximum flexibility when designing active filters. The AD9631 is offered in industrial (40°C to +85°C) and mili-
tary (55°C to +125°C) temperature ranges and the AD9632 in industrial. Industrial versions are available in plastic DIP and SOIC; MIL versions are packaged in cerdip.