LTC6655CHMS8-3.3#TRPBF

Voltage Reference Overview

The LTC6655CHMS8-3.3#TRPBF is a precision bandgap voltage reference providing a fixed 3.3V output with an initial accuracy of ±0.05%. It features a maximum temperature coefficient of 5ppm/°C and operates over a –40°C to 125°C range. The device supports a supply voltage up to 13.2V with a minimum dropout of 500mV. It offers load regulation of 15ppm/mA (sourcing) and 30ppm/mA (sinking), along with low power shutdown current below 20µA.

Voltage Reference Feature Summary

• Advanced curvature compensation ensures predictable temperature characteristics and high accuracy, reducing calibration requirements.
• Capable of sourcing and sinking ±5mA current while maintaining superior load regulation across operating conditions.
• Includes a dedicated shutdown mode for low-power applications, minimizing supply current when inactive.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific CHMS8 suffix against official Analog Devices documentation to confirm package type and tape-and-reel configuration. Ensure compatibility with system thermal constraints and verify that the 5ppm/°C drift specification meets design tolerances for the intended application environment.

Voltage Reference Selection Notes

Select this component for designs requiring stable 3.3V references in automotive or industrial environments. Consider the MSOP package for standard surface mount assembly. Evaluate capacitor selection carefully, as X7R ceramics may introduce piezoelectric noise; film capacitors are recommended for ultra-low noise requirements.

Voltage Reference Part Context

This part belongs to the LTC6655 family of precision voltage references from Analog Devices. The family includes options with lower drift (BHMS8) and low-noise variants (LTC6655LN). The CHMS8 designation indicates the C-grade accuracy and MSOP plastic package, distinguishing it from hermetic LS8 packages or different voltage outputs within the same series.

Voltage Reference Replacement Considerations

Direct substitutes include other LTC6655 variants such as the LTC6655BHMS8-3.3#TRPBF for higher accuracy or the LTC6655LNCHMS8-3.3#TRPBF for reduced noise. Verify pinout compatibility and ensure the replacement meets the required temperature coefficient and dropout voltage specifications.