AD736BRZ-R7

Overview

The AD736BRZ-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 plus 0.3% of reading on sine wave inputs. The device maintains precision across diverse input waveforms, including variable duty cycle pulses and phase-controlled sine waves. It operates from a wide supply range of +2.8V/-3.2V to ±16.5V with a maximum supply current of 200µA. The component includes an internal output buffer amplifier and supports AC coupling via an external capacitor. It is housed in an 8-pin SOIC-N package and functions within a temperature range of -40°C to +85°C.

Feature Summary

• Laser-trimmed precision architecture ensuring minimal measurement error for sine wave inputs
• Integrated output buffer amplifier providing design flexibility without requiring external trimming
• Capable of calculating RMS values for both AC and DC input voltages
• Optimized for battery-powered applications through ultra-low power consumption

Applications

• Portable digital multimeters
• Battery-powered instrumentation systems
• Precision rectifier circuits requiring non-RMS performance enhancement
• Signal processing for variable duty cycle pulse measurements

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing. Confirm the BRZ variant meets the extended industrial temperature range requirements of your application. Cross-reference the manufacturer datasheet for pinout compatibility and electrical specifications before integration. Ensure supply chain sources provide authentic components from Analog Devices Inc. to guarantee specified accuracy levels.

Selection Notes

Select this component when high precision RMS conversion is required for complex waveforms beyond simple sine waves. It is suitable for designs prioritizing low power consumption in portable devices. Consider the integrated buffer if external amplification is undesirable. Verify that the input signal characteristics fall within the specified peak factor limits for optimal performance.

Part Context

This part belongs to the AD736 family of true RMS-to-DC converters. It shares core functionality with other variants like the AD736JRZ but differs in temperature rating and packaging. The family is designed to replace discrete non-RMS precision rectifiers, offering superior accuracy and lower cost in a compact form factor.

Replacement Considerations

Direct substitutes include other AD736 variants such as AD736JRZ or AD736ARZ depending on temperature and accuracy needs. Verify pin compatibility and electrical specifications match before substitution.