AD737 Datasheet (Analog Devices) - True RMS-to-DC Converter

AD737, True RMS-to-DC Converter

The AD737 is a low power, precision, monolithic, true rms-to-dc converter.

It is laser trimmed to provide a maximum error of ±0.2 mV ± 0.3% of reading with sine wave inputs.

Furthermore, it maintains high accuracy while measuring a wide range of input waveforms, including variable duty cycle pulses

AD737 Features

* Computes True rms value Average rectified value Absolute value Provides 200 mV full-scale input range (larger inputs with input scaling) Direct interfacing with 3½ digit CMOS analog-to-digital converters (ADCs) High input impedance: 1012 Ω Low input bias current: 25 pA maximum High accuracy: ±0.2 mV