LTC6652BHMS8-3#PBF

Overview

The LTC6652BHMS8-3#PBF is a precision buffered voltage reference with a fixed 3V output, housed in an 8-lead MSOP package. It features B-grade initial accuracy of ±0.1% and a maximum temperature coefficient of 10ppm/°C. The device operates over a –40°C to 125°C range with a supply voltage up to 13.2V. Key electrical parameters include a typical supply current of 350µA, shutdown current under 2µA, and low-frequency noise of 2.1ppm P-P (0.1Hz to 10Hz). It supports sourcing 5mA and sinking 1mA.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and minimal drift.
• Integrated buffer provides excellent load regulation and source/sink capability without external components.
• Active-low shutdown pin reduces power consumption significantly when the reference is not needed.
• Stable operation guaranteed with or without an optional output capacitor.

Applications

• Automotive control and monitoring systems
• High-resolution data acquisition systems
• Precision regulators and instrumentation

Procurement Notes

Verify the specific B-grade performance tier and MSOP-8 packaging against the official Analog Devices datasheet before integration. Confirm that the 10ppm/°C temperature coefficient meets the system's thermal stability requirements. Ensure the input voltage remains within the specified limits relative to the 3V output to maintain proper dropout voltage margins during operation.

Selection Notes

Select this component for applications requiring a stable 3V reference with strict low-drift specifications across wide industrial temperature ranges. The B-grade accuracy suits general high-performance needs where A-grade precision is unnecessary. Consider the MSOP package for standard surface-mount assembly constraints rather than the hermetic LS8 option.

Part Context

This part belongs to the LTC6652 family of precision, low-drift, low-noise references designed for demanding environments. The family includes various output voltages and grade options, all sharing the same core architecture. The MSOP variant offers a compact plastic solution suitable for space-constrained designs compared to larger hermetic packages.

Replacement Considerations

Direct substitutes within the same family include the LTC6652AHMS8-3#PBF for higher accuracy grades. Other voltage variants like the LTC6652BHMS8-2.5#PBF share identical electrical characteristics but differ in output level. Verify pin compatibility and thermal performance when cross-referencing with other series references.