LTC1966IMS8#PBF

Overview

The LTC1966IMS8#PBF is a precision micro-power true RMS-to-DC converter utilizing patented delta-sigma computational technology. It operates on a single supply voltage ranging from 2.7V to 5.5V or dual supplies up to ±5.5V. The device features a low supply current of 155µA and an ultra-low shutdown current of 0.1µA. It supports both single-ended and differential inputs with rail-to-rail common-mode voltage range. The output is rail-to-rail with an independent reference pin for level shifting. It is housed in an 8-lead MSOP package.

Feature Summary

• Implements delta-sigma computational technique for accurate true RMS-to-DC conversion
• Supports flexible input configurations including single-ended and differential modes
• Provides rail-to-rail output capability with independent reference pin for level shifting

Applications

• True RMS digital multimeters
• Panel meters
• AC+DC true RMS measurements

Procurement Notes

Verify the specific suffix #PBF indicates lead-free tape and reel or tube packaging as per manufacturer documentation. Confirm RoHS compliance status through official Analog Devices datasheets. Ensure the 8-MSOP package dimensions match your PCB footprint requirements. Check for any recent product change notifications that may affect specifications or availability.

Selection Notes

Select this component when high accuracy and low power consumption are critical for RMS measurement applications. The delta-sigma architecture offers superior linearity compared to traditional log-antilog converters. Consider the wide input voltage range and flexible supply options for diverse system designs. The small MSOP package is suitable for space-constrained portable instrumentation.

Part Context

The LTC1966 belongs to Analog Devices' portfolio of precision signal conditioning ICs. It is part of the broader LTC series designed for high-performance analog applications. The IMS8#PBF designation specifies the industrial temperature range and MSOP package variant. This component addresses the need for accurate AC signal measurement in modern electronic systems.

FAQ

What is the typical supply current for the LTC1966?

The typical supply current is 155µA, with a maximum of 170µA.

Can the LTC1966 accept differential inputs?

Yes, it supports both single-ended and differential inputs for EMI/RFI suppression.

What is the gain accuracy over frequency?

The gain accuracy is 0.1% from 50Hz to 1kHz.