LT1389BCS8-4.096#TRPBF

Voltage Reference Overview

The LT1389BCS8-4.096#TRPBF is a nanopower precision shunt voltage reference manufactured by Analog Devices Inc., housed in an 8-lead plastic SO (SO-8) package. It provides a fixed output voltage of 4.096V with an initial accuracy of ±0.075% and a maximum temperature coefficient of 50ppm/°C over the commercial operating range of 0°C to 70°C. The device operates at a minimum current of 1mA, maintaining regulation with low dynamic impedance below 3Ω. It features ultralow operating current consumption of 800nA and does not require an external output compensation capacitor for stability.

Voltage Reference Feature Summary

• Achieves high precision through trimmed thin-film resistors and curvature correction techniques
• Maintains stable voltage regulation at ultralow operating currents down to 800nA
• Exhibits low dynamic impedance for reliable operation from unregulated power supplies
• Demonstrates low temperature cycling hysteresis due to advanced packaging

Voltage Reference Applications

• Portable meters requiring minimal power consumption
• Precision regulators utilizing shunt configurations
• Analog-to-digital and digital-to-analog converter reference circuits
• Calibrators demanding guaranteed temperature drift performance

Voltage Reference Procurement Notes

Verify that the specific suffix #TRPBF corresponds to tape-and-reel packaging when sourcing components. Confirm the B grade designation matches the required 0.075% accuracy and 50ppm/°C drift specifications for your application. Ensure the SO-8 package footprint aligns with your board layout requirements before finalizing procurement orders.

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 replacing older references like the LM185 or LT1004 where nanowatt-level quiescent current is necessary. Consider the 4.096V output level suitability for your specific reference voltage needs within the available series options.

Voltage Reference Part Context

This part belongs to the LT1389 family of nanopower precision shunt voltage references. The family includes variants offering 1.25V, 2.5V, and 5.0V outputs with varying grades of accuracy and drift characteristics. The LT1389 utilizes bandgap reference technology optimized for ultra-low current applications while maintaining high precision standards across commercial temperature ranges.

Voltage Reference Replacement Considerations

Public confirmed substitute part numbers: None.