MX636

True RMS-to-DC Converters

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Overview

True RMS-to-DC Conversion
Computes RMS of AC and DC Signals
Wide Response:
- 2MHz Bandwidth for V_RMS > 1V (MX536A)
- 1MHz Bandwidth for V_RMS > 100mV (MX636)
Auxiliary dB Output:
- 60dB Range (MX536A)
- 50dB Range (MX636)
Single- or Dual-Supply Operation
Low Power:
- 1.2mA typ (MX536A)
- 800µA typ (MX636)

The MX536A and MX636 are true RMS-to-DC converters. They feature low power and are designed to accept low-level input signals from 0 to 7V_RMS for the MX536A and 0 to 200mV_RMS for the MX636. Both devices accept complex input waveforms containing AC and DC components. They can be operated from either a single supply or dual supplies. Both devices draw less than 1mA of quiescent supply current, making them ideal for battery-powered applications.

Input and output offset, positive and negative waveform symmetry (DC reversal), and full-scale accuracy are laser trimmed, so that no external trims are required to achieve full rated accuracy.

Applications