General Description

The MX536A and MX636 are true RMS-to-DC convert ers. They feature low power and are designed to accept low-level input signals from 0 to 7VRMSfor the MX536A and 0 to 200mVRMSfor 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.

Features

♦True RMS-to-DC Conversion

♦Computes RMS of AC and DC Signals

♦Wide Response:

  2MHz Bandwidth for VRMS> 1V (MX536A)

  1MHz Bandwidth for VRMS> 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)

Applications

Digital Multimeters

Battery-Powered Instruments

Panel Meters

Process Control