LTC6655BHMS8-3#TRPBF

Overview

The LTC6655BHMS8-3#TRPBF is a precision bandgap voltage reference from Analog Devices, providing a fixed 3V output. It features 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, with a minimum dropout of 500mV. It draws a typical supply current of 7mA and supports ±5mA source/sink currents. Low-frequency noise is specified at 0.25ppm peak-to-peak (0.1Hz to 10Hz). The component is housed in an 8-lead MSOP package and is fully characterized over the -40°C to +125°C industrial temperature range.

Feature Summary

• Advanced curvature compensation ensures low drift and high accuracy without calibration
• Integrated shutdown mode reduces power consumption for battery-operated systems
• Superior load regulation and line rejection maintain stability under varying conditions

Applications

• High resolution data acquisition systems
• Precision instrumentation and test equipment
• Medical equipment requiring stable references
• Precision regulators and battery monitors

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'B' grade designation corresponds to the required ±0.025% accuracy and 2ppm/°C drift specifications. Ensure the MSOP-8 footprint matches the design layout. Check for RoHS compliance documentation as indicated in standard ordering information.

Selection Notes

Select this part for applications demanding minimal drift and high accuracy over wide temperature ranges. The 3V output suits direct interfacing with ADCs or DACs. Consider the ±5mA drive capability for moderate loads. Verify that the 500mV dropout voltage fits the available supply headroom. The MSOP package offers a compact solution for space-constrained designs.

Part Context

This component belongs to the LTC6655 family of precision voltage references. The family includes options with different output voltages and packages, such as the hermetic LS8. The BHMS8 variant specifically denotes the B-grade performance level in the plastic MSOP package. This series is designed to replace older, less accurate references in high-performance analog circuits.

Replacement Considerations

LTC6655CHMS8-3#TRPBF

FAQ

How does the SHDN pin function?

The SHDN pin is an active-low input that powers down the device to less than 20µA. An internal pull-up resistor keeps the device enabled if left unconnected, though external pulling high is recommended.

What is the minimum operating voltage?

For the 3V output version, the minimum supply voltage is VOUT + 0.5V, which equals 3.5V, provided the output current is zero. Under load, the dropout voltage is 500mV.