AD536AJQ

Overview

The AD536AJQ is a monolithic true RMS-to-DC converter from Analog Devices. It directly computes the RMS value of complex input waveforms containing AC and DC components. The device features laser trimming for high accuracy, with a maximum error of ±0.5%. It supports single or dual-supply operation within a 5V to 36V range and draws only 1.2mA of quiescent current. The component offers wide bandwidth capabilities, extending up to 450kHz for signals above 100mV and 2MHz for signals above 1V.

Feature Summary

• Performs true RMS-to-DC conversion for complex waveforms including AC and DC components
• Includes crest factor compensation scheme allowing measurements with minimal error at high crest factors
• Features a dedicated dB output pin providing a logarithmic voltage representation of the RMS level
• Utilizes laser trimming technology to ensure high precision without requiring external adjustments

Applications

• Power measurement systems
• Audio signal analysis
• Vibration monitoring equipment
• Battery-powered instrumentation

Procurement Notes

Verify the specific suffix 'Q' against official Analog Devices documentation to confirm package type and temperature rating. Ensure compatibility with system voltage requirements and thermal management needs. Confirm RoHS compliance status through the manufacturer's latest datasheet before procurement.

Selection Notes

Select this component when accurate RMS calculation of mixed AC/DC signals is required. Consider the 450kHz bandwidth limit for lower frequency applications. Evaluate the need for the dB output feature versus standard linear voltage output. Check if the commercial temperature range meets environmental specifications.

Part Context

This part belongs to the AD536A family of RMS-to-DC converters. It serves as an integrated solution replacing hybrid or modular units. The AD536A series provides superior performance compared to earlier models like the AD536, offering improved bandwidth and temperature drift characteristics while maintaining low power consumption.

Replacement Considerations

The AD536AJQ may be replaced by other variants within the AD536A family, such as the AD536AK for higher precision or AD536AS for extended temperature ranges. Verify pinout and electrical specifications match before substitution.