LTC6655BHMS8-3.3#PBF

Overview

The Analog Devices LTC6655BHMS8-3.3#PBF is a precision bandgap voltage reference providing a fixed 3.3V output with an initial accuracy of ±0.025% and a maximum temperature coefficient of 2ppm/°C. It operates within a supply range of VOUT + 0.5V to 13.2V, drawing a typical supply current of 7mA. The device features low noise performance of 0.25ppm peak-to-peak in the 0.1Hz to 10Hz bandwidth and supports both sourcing and sinking currents up to ±5mA. It is housed in an 8-lead MSOP package and is fully specified over an operating temperature range of –40°C to +125°C.

Feature Summary

• Advanced curvature compensation ensures predictable temperature characteristics and high accuracy without calibration.
• Superior load regulation combined with source and sink capability maintains consistent performance under varying conditions.
• Low power shutdown mode significantly reduces consumption when the reference is inactive.
• Exceptional line rejection ensures stable operation across a wide input voltage range.

Applications

• Instrumentation and test equipment
• High resolution data acquisition systems
• Precision battery monitors

Procurement Notes

Verify the specific B-grade accuracy and 2ppm/°C drift specifications against the latest manufacturer datasheet before integration. Confirm that the 8-lead MSOP package dimensions align with the target PCB footprint. Ensure the design accommodates the required output capacitance range for stability. Check for any regional distribution restrictions or obsolescence notices directly from Analog Devices authorized channels.

Selection Notes

Select this component for applications requiring minimal drift and high accuracy in harsh environments. The B-grade variant offers tighter initial accuracy compared to C-grade options. Consider the 500mV dropout requirement relative to the available supply headroom. Evaluate the need for external filtering if ultra-low noise is critical, as the standard package does not include a dedicated noise reduction pin unlike the LN variant.

Part Context

This part belongs to the LTC6655 family of precision references, designed for demanding automotive and industrial applications. It complements other ADI voltage references by offering a balance of low noise, low drift, and compact packaging. The MSOP package provides a space-efficient solution for dense circuit boards while maintaining thermal performance suitable for extended temperature ranges.

Replacement Considerations

LTC6655CHMS8-3.3#PBF