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DESCRIPTION

The AD845 is a fast, precise, N channel JFET input, monolithic operational amplifier. It is fabricated using Analog Devices’ complementary bipolar (CB) process. Advanced laser-wafer trimming technology enables the very low input offset voltage and offset voltage drift performance to be realized. This precision, when coupled with a slew rate of 100 V/μs, a stable unity-gain bandwidth of 16 MHz, and a settling time of 350 ns 0.01 while driving a parallel load of 100pF and 500? represents a combination of features unmatched by any FET input IC amplifier. The AD845 can easily be used to upgrade many existing designs which use BiFET or FET input hybrid amplifiers and, in some cases, those which use bipolar input op amps.

FEATURES

Replaces Hybrid Amplifiers in Many Applications

AC PERFORMANCE:

Settles to 0.01 in 350 ns

100 V/ms Slew Rate

12.8 MHz min Unity-Gain Bandwidth

1.75 MHz Full-Power Bandwidth at 20 V p-p

DC PERFORMANCE:

0.25 mV max Input Offset Voltage

5 mV/8C max Offset Voltage Drift

0.5 nA Input Bias Current

250 V/mV min Open-Loop Gain

4 mV p-p max Voltage Noise, 0.1 Hz to 10 Hz

94 dB min CMRR

Available in Plastic Mini-DIP, Hermetic Cerdip and SOIC Packages. Also Available in Tape and Reel in Accordance with EIA-481A Standard