LTC1966IMS8#TRPBF

Overview

The LTC1966IMS8#TRPBF is a true RMS-to-DC converter utilizing patented delta-sigma computation technology. It accepts single-ended or differential inputs with rail-to-rail common-mode voltage ranges and supports peak factors up to four. The device operates on a single supply from 2.7V to 5.5V, or dual supplies up to ±5.5V. Key electrical parameters include a gain accuracy of 0.1% between 50Hz and 1kHz, total error of 0.25%, and linearity of 0.02%. Supply current is 155µA typically, reducing to 0.5µA in shutdown mode. It features an 8-MSOP package.

Feature Summary

• Implements true RMS-to-DC conversion via proprietary delta-sigma calculation architecture for high precision and flexibility
• Provides exceptional linearity (0.02%) enabling simplified system calibration across varying input voltages
• Supports flexible input configurations including single-ended or differential modes with rail-to-rail common-mode range
• Features independent output reference pin allowing flexible level shifting with rail-to-rail output capability

Applications

• True RMS digital multimeters
• Panel meters requiring AC+DC measurements
• Portable instrumentation systems

Procurement Notes

Verify the specific suffix IMS8#TRPBF against official Analog Devices documentation to confirm the MSOP-8 tape and reel packaging configuration. Ensure the operating temperature range and supply voltage specifications align with the target application requirements before finalizing procurement decisions.

Selection Notes

Select this component when high accuracy and linearity are required for RMS measurement applications. The delta-sigma architecture offers superior performance compared to traditional log-antilog converters. Consider the low power consumption and small footprint for battery-operated or space-constrained designs.

Part Context

This part belongs to the LTC1966 series of RMS-to-DC converters. It is designed to replace older technologies by offering improved accuracy and ease of use. The device integrates complex signal processing into a compact surface-mount package suitable for modern electronic systems.

Replacement Considerations

LTC1966CMS8#TRPBF is a documented equivalent variant within the same family.