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AD737 True RMS-to-DC Converter

AD737 Description

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

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

AD737 Applications

* Compared to these circuits, the AD737 offers higher accuracy at equal or lower cost. The AD737 computes the rms value of both ac and dc input voltages, and is ac-coupled by adding an input capacitor. In this mode, the AD737 resolves input signal levels of 100 μV rms or less, despite variations in t

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True RMS-to-DC Converter Analog Devices
Analog Devices AD737-like datasheet