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PRODUCT DESCRIPTION

The AD840 is a member of the Analog Devices’ family of wide bandwidth operational amplifiers. This high speed/high precision family includes, among others, the AD841, which is unity gain stable, and the AD842, which is stable at a gain of two or greater and has 100 mA minimum output current drive. These devices are fabricated using Analog Devices’ junction isolated complementary bipolar (CB) process. This process permits a combination of dc precision and wideband ac performance previously unobtainable in a monolithic op amp. In addition to its 400 MHz gain bandwidth product, the AD840 offers extremely fast settling characteristics, typically settling to within 0.01 of final value in 100 ns for a 10 volt step.

FEATURES

Wideband AC Performance

Gain Bandwidth Product: 400 MHz (Gain ≥ 10)

Fast Settling: 100 ns to 0.01 for a 10 V Step

Slew Rate: 400 V/ms

Stable at Gains of 10 or Greater

Full Power Bandwidth: 6.4 MHz for 20 V p-p into a 500 V Load

Precision DC Performance

Input Offset Voltage: 0.3 mV max

Input Offset Drift: 3 mV/8C typ

Input Voltage Noise: 4 nV/√Hz

Open-Loop Gain: 130 V/mV into a 1 kV Load

Output Current: 50 mA min

Supply Current: 12 mA max

APPLICATIONS

Video and Pulse Amplifiers

DAC and ADC Buffers

Line Drivers

Available in 14-Pin Plastic DIP, Hermetic Cerdip and 20-Pin LCC Packages and in Chip Form

MIL-STD-883B Processing Available