MAXIM MX636JD

The MX536A/MX636 uses an implicit method of RMS computation that overcomes the dynamic range as well as other limitations inherent in a straightforward computation of the RMS. The actual computation performed by the MX536A/MX636 follows the equation: V_RMS = Avg. [VIN^2 / V_RMS]

• 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 7VRMS for the MX536A and 0 to 200mVRMS 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.
• 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)

• Digital Multimeters
• Battery-Powered Instruments
• Panel Meters
• Process Control