PRODUCT DESCRIPTION

The AD843 is a fast settling, 34 MHz, CBFET input op amp. The AD843 combines the low (0.6 nA) input bias currents characteristic of a FET input amplifier while still providing a 34 MHz bandwidth and a 135 ns settling time (to within 0.01% of final value for a 10 volt step). The AD843 is a member of the Analog Devices’ family of wide bandwidth operational amplifiers. 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.

FEATURES

AC PERFORMANCE

Unity Gain Bandwidth: 34 MHz

Fast Settling: 135 ns to 0.01%

Slew Rate: 250 V/ms

Stable at Gains of 1 or Greater

Full Power Bandwidth: 3.9 MHz

DC PERFORMANCE

Input Offset Voltage: 1 mV max (AD843K/B}

Input Bias Current: 0.6 nA typ

Input Voltage Noise: 19 nV/√Hz

Open Loop Gain: 30 V/mV into a 500 V Load

Output Current: 50 mA min

Supply Current: 13 mA max

Available in 8-Pin Plastic Mini-DIP & Cerdip, 16-Pin SOIC, 20-Pin LCC and 12-Pin Hermetic Metal Can Packages

Available in Tape and Reel in Accordance with EIA-481A Standard

Chips and MIL-STD-883B Parts Also Available

APPLICATIONS

High Speed Sample-and-Hold Amplifiers

High Bandwidth Active Filters

High Speed Integrators

High Frequency Signal Conditioning