LTC1966MPMS8

Overview

The LTC1966MPMS8 is a precision micropower RMS-to-DC converter utilizing patented ∆Σ computational technology. It operates on a single supply voltage ranging from 2.7V to 5.5V or dual supplies up to ±5.5V, with a typical supply current of 155µA and a shutdown current of 0.5µA. The device features an 8-pin MSOP package measuring 3.00 x 3.00mm with a height of 1.10mm. It supports a peak factor of up to 4 and offers rail-to-rail input and output capabilities.

Feature Summary

• Employs ∆Σ computational technique for true RMS-to-DC conversion, ensuring high accuracy and flexibility compared to traditional log-antilog converters.
• Features rail-to-rail common-mode input range and independent output reference pin for flexible level shifting.
• Includes a low-power shutdown mode that significantly reduces supply current consumption.

Applications

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

Procurement Notes

Verify the specific suffix 'MP' against official Analog Devices documentation to confirm military-grade qualification and extended temperature ratings. Ensure the MSOP-8 package dimensions match your PCB footprint requirements. Confirm RoHS compliance status as indicated in the latest datasheet revision before finalizing procurement specifications.

Selection Notes

Select this component when system design demands ultra-low power consumption alongside high precision in a compact form factor. The ∆Σ architecture simplifies calibration by providing superior linearity across the entire input voltage range. Consider the wide operating temperature range if the application involves harsh environmental conditions.

Part Context

This part belongs to the LTC1966 family of RMS-to-DC converters manufactured by Analog Devices (formerly Linear Technology). The family includes variants such as the standard LTC1966CMS8#PBF and the wider bandwidth LTC1968. The MP suffix typically denotes enhanced reliability specifications suitable for demanding applications.

Replacement Considerations

LTC1966CMS8#PBF

FAQ

How does the LTC1966 handle input signals?

It accepts both single-ended and differential input signals, supporting a peak factor of up to 4 with a rail-to-rail common-mode input range.

What is the benefit of the ∆Σ technology used in this converter?

The ∆Σ computational technique makes the converter simpler to use, more accurate, lower in power consumption, and more flexible than traditional logarithmic antilogarithmic RMS-to-DC converters.