LT1389BCS8-5#TRPBF

Voltage Reference Overview

The LT1389BCS8-5#TRPBF is a nanopower precision shunt voltage reference manufactured by Analog Devices Inc. It provides a nominal output voltage of 5V with an initial accuracy of 0.075% and a maximum temperature coefficient of 50ppm/°C. The device operates within a temperature range of 0°C to 70°C and maintains regulation at an ultralow operating current of 800nA. It features less than 1Ω dynamic impedance and does not require an output compensation capacitor, though it remains stable with capacitive loads.

Voltage Reference Feature Summary

• Utilizes trimmed precision thin-film resistors and improved curvature correction techniques for high stability
• Maintains voltage regulation at an ultralow operating current of 800nA
• Features low dynamic impedance for easy use from unregulated supplies
• Stable with capacitive loads without requiring an output compensation capacitor

Voltage Reference Applications

• Portable Meters
• Precision Regulators
• A/D and D/A Converters
• Calibrators

Voltage Reference Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and reel specifications. Confirm RoHS compliance status through manufacturer datasheets or certificates of conformity. Ensure ESD handling precautions are followed during assembly due to device sensitivity. Validate that the component meets all absolute maximum ratings for storage and soldering temperatures prior to integration.

Voltage Reference Selection Notes

Select this component when lowest power consumption and guaranteed temperature drift are critical requirements. It serves as a high-performance upgrade for legacy references like the LM185/LM385, LT1004, LT1034, and LT1634. Consider board layout details, such as guard rings around DNC pins, to minimize leakage currents that could induce output errors in nanopower applications.

Voltage Reference Part Context

The LT1389 series belongs to Analog Devices' lineup of nanopower precision shunt voltage references. These devices are designed for applications demanding minimal quiescent current while maintaining high accuracy. The family includes various voltage options (1.25V, 2.5V, 4.096V, 5V) and packages, utilizing bandgap reference technology with advanced curvature correction.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers include LT1389ACS8-5#PBF, LT1389BCS8-2.5#PBF, and LT1389BCS8-4.096#PBF for different voltage variants within the same series.