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