LTC6652BHMS8-1.25#PBF

Overview

The Analog Devices LTC6652BHMS8-1.25#PBF is a precision buffered voltage reference delivering a fixed 1.25V output in an 8-lead MSOP package. It features B-grade accuracy of ±0.1% and a maximum temperature coefficient of 10ppm/°C over the –40°C to 125°C range. The device operates from supply voltages between 2.7V and 13.2V, with a minimum dropout of 300mV. Key electrical characteristics include low noise (2.1ppm P-P), ±5mA source/sink current capability, and a shutdown mode consuming less than 2µA.

Feature Summary

• High-order curvature compensation ensures predictable temperature characteristics and low drift across the full operating range.
• Integrated buffer provides excellent load regulation and allows sourcing or sinking up to 5mA without external components.
• Active-low shutdown pin enables power reduction to under 2µA when the reference is not required.
• Stable operation is guaranteed with or without an optional output capacitor, simplifying board layout.

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging. Confirm the B-grade designation matches the required ±0.1% accuracy and 10ppm/°C drift specifications for your application. Ensure the MSOP-8 package dimensions align with your PCB footprint constraints.

Selection Notes

Select this part when high stability is needed in space-constrained designs. The B-grade offers a balance of performance and cost compared to A-grade options. Consider the LS8 hermetic package if humidity sensitivity or superior long-term stability is critical for the environment.

Part Context

This component belongs to the LTC6652 family of precision references, which includes various output voltages and grade options. The family utilizes high-order curvature compensation to achieve low drift. The MSOP package provides a compact surface-mount solution suitable for dense PCB layouts.

Replacement Considerations

LTC6652AHMS8-1.25#PBF offers higher accuracy (±0.05%) and lower drift (5ppm/°C). LT6657 series devices provide even lower drift specifications but may require different supply voltage considerations.