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AD736 - True RMS-to-DC Converter

Description

The AD736 is a low power, precision, monolithic true rms-todc converter.

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

Features

  • er-down control with standby current of only 25 μA; the dc output voltage is negative and the output impedance is 8 kΩ.

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Full PDF Text Transcription

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Data Sheet FEATURES Converts an ac voltage waveform to a dc voltage and then converts to the true rms, average rectified, or absolute value 200 mV rms full-scale input range (larger inputs with input attenuator) High input impedance: 1012 Ω Low input bias current: 25 pA maximum High accuracy: ±0.3 mV ± 0.3% of reading RMS conversion with signal crest factors up to 5 Wide power supply range: +2.8 V, −3.2 V to ±16.5 V Low power: 200 µA maximum supply current Buffered voltage output No external trims needed for specified accuracy Related device: the AD737—features a power-down control with standby current of only 25 μA; the dc output voltage is negative and the output impedance is 8 kΩ GENERAL DESCRIPTION The AD736 is a low power, precision, monolithic true rms-todc converter.
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