AD737JR-REEL

Overview

The AD737JR-REEL is a low-cost, low-power true RMS-to-DC converter manufactured by Analog Devices Inc. It computes the true root-mean-square value of an input signal and provides a corresponding DC output voltage. The device features a full-scale input range of 200 mV and high input impedance of 10^12 V. Key electrical specifications include a maximum input bias current of 25 pA and operation within a supply voltage range of 2.8 V to 16.5 V. It operates at a working power current of 160 uA with a maximum power dissipation of 200 mW. The component supports an operating temperature range from -40°C to +85°C and is available in an SOIC-8 surface-mount package.

Feature Summary

• Computes true RMS values directly from AC input signals
• Provides direct interfacing capability with 3 1/2 digit CMOS A/D converters
• Features high input impedance and low input bias current for minimal signal loading

Applications

• Signal processing systems requiring accurate RMS measurement
• Audio level metering and analysis equipment
• Power monitoring circuits for AC sources

Procurement Notes

Verify availability status as distribution channels may indicate limited stock or special order requirements. Confirm RoHS compliance details through official manufacturer documentation prior to integration. Ensure the specific suffix matches the required reel packaging format for automated assembly processes.

Selection Notes

Select this component when true RMS conversion accuracy is critical compared to average-responding meters. Consider the 200 mV full-scale input range and the need for external attenuation if input signals exceed this limit. Evaluate the low power consumption benefits for battery-operated or thermally constrained designs.

Part Context

This part belongs to the AD737 series of precision analog signal processors. It serves as a specialized PMIC function for converting complex AC waveforms into measurable DC levels. The device utilizes internal circuitry including a full-wave rectifier, input amplifier, and RMS core to achieve high accuracy without digital computation overhead.

Replacement Considerations

Check for AD737ANZ or AD737JRZ-RL as potential pin-compatible alternatives within the same family. Verify that any substitute maintains the true RMS functionality and compatible supply voltage ranges.