AD8436ACPZ-R7

Overview

The AD8436ACPZ-R7 is a low-power true RMS-to-DC converter manufactured by Analog Devices Inc. It operates within a supply voltage range of 4.8V to 36V (single) or ±2.4V to ±18V (dual). The device features a typical quiescent current of 325µA and supports an input frequency bandwidth of 1MHz at 300mV input. Accuracy is specified as ±10µV plus 0.5% of the reading, with a full-scale input range from 100µV rms to 3V rms. It is housed in a 20-LFCSP package measuring 4x4mm and functions across a temperature range of -40°C to +125°C.

Feature Summary

• Provides precise true RMS calculation for complex AC waveforms without processor intervention
• Integrates high-impedance FET buffers for external attenuation and load driving
• Supports configurable gain settings via internal matched resistor pairs

Applications

• Portable multimeters
• Battery-powered measurement devices
• Power monitoring systems requiring accurate RMS conversion

Procurement Notes

Verify component authenticity through authorized distribution channels due to limited availability status. Confirm package integrity and moisture sensitivity level handling procedures prior to assembly. Ensure supply chain documentation matches the specific AD8436ACPZ-R7 designation to avoid substitution errors during procurement.

Selection Notes

Select this component when accurate RMS measurement of non-sinusoidal signals is required in space-constrained designs. The low power consumption makes it suitable for battery-operated instruments. Verify that the input signal amplitude falls within the specified 100µV to 3V rms range for optimal accuracy performance.

Part Context

This part belongs to the AD8436 series of precision analog converters. It serves as a dedicated solution for converting AC signals to DC equivalents, replacing traditional peak-detection methods that may introduce errors with distorted waveforms. The ACPZ suffix indicates the specific LFCSP packaging variant.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.