PRODUCT DESCRIPTION

The AD704 is a quad, low power bipolar op amp that has the low input bias current of a BiFET amplifier but which offers a significantly lower IB drift over temperature. It utilizes Super beta bipolar input transistors to achieve picoampere input bias current levels (similar to FET input amplifiers at room temperature), while its IB typically only increases by 5× at +125°C (unlike a BiFET amp, for which IB doubles every 10°C resulting in a 1000× increase at +125°C). Furthermore the AD704 achieves 75 µV offset voltage and low noise characteristics of a precision bipolar input op amp.

FEATURES

High DC Precision

  75 mV max Offset Voltage

  1 mV/8C max Offset Voltage Drift

  150 pA max Input Bias Current

  0.2 pA/8C typical IB Drift

Low Noise

  0.5 mV p-p typical Noise, 0.1 Hz to 10 Hz

Low Power

  600 µA max Supply Current per Amplifier

Chips & MIL-STD-883B Processing Available

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

Single Version: AD705, Dual Version: AD706

PRIMARY APPLICATIONS

Industrial/Process Controls

Weigh Scales

ECG/EKG Instrumentation

Low Frequency Active Filters