LTC1966HMS8#PBF

Overview

The LTC1966HMS8#PBF is a precision micro-power true RMS-to-DC converter manufactured by Analog Devices Inc. It utilizes patented delta-sigma computational technology to achieve high accuracy and low power consumption. The device accepts single-ended or differential inputs with a rail-to-rail common-mode range and supports peak factors up to four. It operates on a single supply voltage ranging from 2.7V to 5.5V, or dual supplies up to ±5.5V. The component features a low supply current of 155µA in normal operation and enters an ultra-low shutdown mode consuming only 0.5µA. It is housed in an 8-lead MSOP package.

Feature Summary

• Employs innovative delta-sigma calculation technology for true RMS-to-DC conversion
• Provides high gain accuracy and superior linearity for simplified system calibration
• Supports flexible input configurations including single-ended and differential modes
• Features independent output reference pin for flexible level shifting

Applications

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

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with required supply voltages and input signal characteristics before integration. Confirm availability status as distribution channels may report limited stock or restricted supply conditions for this specific part number.

Selection Notes

Select this component when high precision and low power are critical requirements for RMS measurement applications. The delta-sigma architecture offers better flexibility and lower power compared to traditional log-antilog converters. Consider the 8-MSOP package size for space-constrained portable designs. Verify that the input signal peak factor does not exceed the specified limit for accurate performance.

Part Context

This part belongs to the LTC1966 series of true RMS-to-DC converters. It shares the core computational technology with other variants in the family but differs in packaging and thermal specifications. The MSOP package provides a compact solution suitable for surface-mount assembly in modern electronic devices requiring precise signal conditioning.

Replacement Considerations

LTC1966IMS8#PBF

FAQ

What is the maximum peak factor supported by the LTC1966?

The LTC1966 supports a peak factor of up to four.

Can the LTC1966 accept differential inputs?

Yes, the device accepts both single-ended and differential inputs to help suppress EMI/RFI.