LTC6655BHMS8-1.25#TRPBF

Overview

The LTC6655BHMS8-1.25#TRPBF is a precision bandgap voltage reference from Analog Devices, housed in an 8-lead plastic MSOP package. It provides a fixed output voltage of 1.25V with an initial accuracy of ±0.025% and a maximum temperature coefficient of 2ppm/°C. The device operates within a supply voltage range of 3V to 13.2V, drawing a typical supply current of 7.5mA. It features low noise performance of 0.25ppm peak-to-peak (0.1Hz to 10Hz) and supports both sourcing and sinking currents up to ±5mA. The component 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, reducing or eliminating the need for calibration.
• Superior load regulation combined with source and sink capability maintains consistent performance across wide operating conditions.
• A dedicated shutdown mode significantly reduces power consumption for low-power applications.

Applications

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

Procurement Notes

Verify the specific ordering suffix #TRPBF corresponds to tape and reel packaging when placing orders. Confirm that the B grade designation matches the required ±0.025% accuracy specifications. Ensure the MSOP-8 package variant aligns with PCB footprint requirements. Cross-reference the full part number against official Analog Devices documentation to validate availability and revision status before finalizing procurement.

Selection Notes

Select this component for applications requiring high stability and minimal drift without external calibration. The 1.25V output is suitable for driving ADCs or DACs directly. Consider the low dropout characteristic if input voltage headroom is limited. Evaluate thermal management needs as the device dissipates power based on the difference between input and output voltages multiplied by the supply current.

Part Context

This part belongs to the LTC6655 family of precision references, which also includes options like the LTC6655LN for lower noise and the LS8 package for hermetic stability. The BHMS8-1.25 variant specifically targets cost-sensitive designs needing high accuracy in a standard surface-mount package. It complements other Analog Devices signal chain components in measurement systems.

Replacement Considerations

LTC6655CHMS8-1.25#TRPBF offers similar functionality with a relaxed temperature coefficient specification of 5ppm/°C instead of 2ppm/°C.