GENERAL 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 2 or greater. Using a voltage feedback architecture, the AD9631/AD9632’s exceptional settling time, bandwidth, and low distortion 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.

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 Third 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

17 mA Supply Current

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

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