LTC6655BHMS8-5#TRPBF

Overview

The LTC6655BHMS8-5#TRPBF is a precision bandgap voltage reference providing a fixed 5V output with ±0.025% initial accuracy and a maximum temperature coefficient of 2ppm/°C. It operates from a supply voltage ranging from VOUT + 0.5V to 13.2V, drawing a typical supply current of 7.5mA. The device features low noise performance of 0.25ppm peak-to-peak in the 0.1Hz to 10Hz range and includes a shutdown mode consuming less than 20µA. It supports sourcing and sinking currents up to ±5mA and is housed in an 8-lead MSOP package.

Feature Summary

• Advanced curvature compensation ensures predictable temperature characteristics and high accuracy.
• Integrated output buffer provides superior load regulation with both source and sink capabilities.
• Low power shutdown mode significantly reduces consumption when the reference is inactive.
• High stability over wide operating conditions with exceptional line rejection.

Applications

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

Procurement Notes

Verify the complete part number against official Analog Devices documentation to confirm the specific B-grade accuracy and MSOP package configuration. Ensure compatibility with system requirements for supply voltage range and thermal management within the specified -40°C to 125°C operating environment before integration.

Selection Notes

Select this component for applications requiring minimal calibration due to its high initial accuracy and low drift. Consider the 5V output option specifically for interfacing with standard logic or ADCs. Evaluate the need for external filtering if ultra-low noise is critical, as the standard MSOP version lacks a dedicated noise reduction pin found in LN variants.

Part Context

This part belongs to the LTC6655 family of precision references designed for demanding automotive and industrial environments. The 'B' suffix denotes the tighter accuracy grade compared to the 'C' grade, while 'HMS8' specifies the 8-lead plastic MSOP surface mount package. The '#TRPBF' suffix indicates tape and reel packaging with lead-free finish.

Replacement Considerations

LTC6655CHMS8-5#TRPBF offers similar functionality with slightly relaxed accuracy specifications (±0.05%).

FAQ

How does the shutdown function operate?

Tying the SHDN pin to ground activates shutdown mode, reducing supply current to less than 20µA. An internal pull-up resistor enables the device if the pin is left open, though external pulling high is recommended for normal operation.

What are the minimum supply voltage requirements?

For the 5V output version, the minimum input voltage is VOUT + 0.5V (5.5V) when sourcing current, ensuring stable operation across the full temperature range.