AD736JRZ-R7

Overview

The AD736JRZ-R7 is a low-power, precision monolithic true RMS-to-DC converter manufactured by Analog Devices Inc. It features laser trimming for high accuracy with a maximum error of ±0.3mV ±0.3% of reading on sine wave inputs. The device supports signal crest factors up to 5 and operates with a wide supply voltage range from +2.8V/-3.2V to ±16.5V. Key electrical parameters include a maximum power supply current of 200µA, an output current capability of 2mA, and an output voltage range of 0V to 4V. It utilizes an 8-pin SOIC-N package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Laser-trimmed precision ensures minimal measurement error across diverse input waveforms including variable duty cycle pulses.
• Integrated output buffer amplifier provides design flexibility without requiring external adjustment for specified accuracy.
• Low power consumption architecture enables operation in battery-powered applications with minimal current draw.

Applications

• Portable digital multimeters
• Battery-powered instrumentation systems
• Precision rectifier circuit upgrades

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing components. Confirm the J-grade temperature rating aligns with operational requirements. Cross-reference the manufacturer part number against official Analog Devices documentation to ensure authenticity and correct pinout configuration for the SOIC-8 package.

Selection Notes

Select this component for applications requiring accurate RMS conversion of non-sinusoidal signals. Consider the 200µA supply current for power-sensitive designs. Ensure the input signal amplitude fits within the specified dynamic range. Verify that the operating temperature environment falls within the qualified industrial range for the J-subgrade variant.

Part Context

This component belongs to the AD736 family of true RMS-to-DC converters. It serves as a direct replacement for older precision rectifier circuits, offering superior accuracy and lower cost. The JRZ-R7 designation specifically identifies the surface-mount SOIC-8 version supplied in tape and reel format for automated assembly processes.

Replacement Considerations

Direct substitutes include other AD736 variants such as AD736JNZ or AD736JRZ depending on package preference. Verify pin compatibility before substitution. Alternative families may require circuit redesign due to differing input impedance or bandwidth characteristics.