ANALOG DEVICES  AD736AQ  RMS to DC Converter, Low Power, 0.3 %, 460 kHz, -40 °C, 85 °C, DIP, 8 Pins

Technical Data Sheet (553.66KB) EN See all Technical Docs

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Product Overview

The AD736AQ is a low power/precision monolithic true RMS-to-DC converter maintains high accuracy while measuring a wide range of input waveforms, including variable duty-cycle pulses and triac (phase)-controlled sine waves. It is laser trimmed to provide a maximum error of ±0.3mV ±0.3% of reading with sine wave inputs. The small size of this converter makes it suitable for upgrading the performance of non-RMS precision rectifiers in many applications. Compared to these circuits, the AD736 offers higher accuracy at an equal or lower cost. The AD736 can compute the RMS value of both AC and DC input voltages. It can also be operated as an AC-coupled device by adding one external capacitor. In this mode, the AD736 can resolve input signal levels of 100μVrms or less, despite variations in temperature or supply voltage. High accuracy is also maintained for input waveforms with crest factors of 1 to 3.
  • 1012Ω High input impedance
  • 25pA maximum Low input bias current
  • ±0.3mV ±0.3% of Reading high accuracy
  • RMS conversion with signal crest factors up to 5
  • 200µA maximum Supply current low power
  • Buffered voltage output
  • No external trims needed for specified accuracy


Product Information

Accuracy %:
Operating Temperature Min:
Operating Temperature Max:
Digital IC Case:
No. of Pins:
Supply Voltage Range:
± 5V to ± 16.5V
Product Range:
Power Dissipation Pd:
200 mW
Supply Current:
160 µA
No SVHC (17-Dec-2015)

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