AD736KRZ-R7

Overview

The AD736KRZ-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% 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 with a wide supply voltage range from +2.8V/-3.2V to ±16.5V and consumes 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.

Feature Summary

• Laser-trimmed precision architecture ensuring minimal measurement error across various signal types
• Integrated output buffer amplifier providing design flexibility without requiring external calibration
• Low power consumption suitable for battery-operated portable instrumentation applications
• Capability to process complex waveforms such as pulsed signals and phase-controlled sine waves

Applications

• Portable digital multimeters
• Battery-powered test equipment
• Precision rectifier circuits requiring RMS conversion
• Signal processing in industrial monitoring systems

Procurement Notes

Verify the specific suffix R7 indicates reel packaging when sourcing components. Confirm the operating temperature range matches the K grade specification if environmental conditions vary. Ensure compatibility with the 8-pin SOIC-N footprint during PCB layout. Cross-reference the manufacturer's latest datasheet for any updates to electrical characteristics or pin configurations before finalizing procurement orders.

Selection Notes

Select this component when high accuracy is required for non-sinusoidal waveforms in low-power environments. Consider the wide supply voltage range for flexible power design. Evaluate the need for AC coupling capabilities if measuring alternating signals. Compare against other RMS converters based on the specific trade-off between power consumption and bandwidth requirements for the target application.

Part Context

This part belongs to the AD736 family of true RMS-to-DC converters. It shares core functionality with variants like the AD736JRZ and AD736ARZ but differs in packaging and temperature grading. The KRZ designation typically denotes a specific commercial or industrial temperature range variant within the SOIC-8 package line. It serves as a direct replacement for legacy RMS conversion solutions in compact designs.

Replacement Considerations

Check for AD736JRZ or AD736ARZ equivalents if different temperature grades are acceptable. Verify pinout compatibility with existing layouts. Ensure that any substitute maintains the same low power consumption and precision specifications for critical measurement applications.