The AD620 with its high accuracy of 40 ppm maximum nonlinearity, low offset voltage of 50 V max, and offset drift of 0.6 V/C max, is ideal for use in precision data acquisition systems, such as weigh scales and transducer Interfaces Furthermore, the low noise, low input bias current, and low power of the AD620 make it well suited for medical applications such as ECG and noninvasive blood pressure monitors. The low input bias current of 1.0 nA max is made possible with the use of Supereta processing in the input stage. The AD620 works well as a preamplifier due to its low input voltage noise of 9 nV/Hz at 1 kHz, 0.28 V p-p in the 0.1 Hz to 10 Hz band, 0.1 pA/Hz input current noise. Also, the AD620 is well suited for multiplexed applications with its settling time of 15 s to 0.01% and its cost is low enough to enable designs with one in amp per channel.
By Analog Devices, Inc.