LT1389BCS8-2.5#TRPBF

Voltage Reference Overview

The LT1389BCS8-2.5#TRPBF is a nanopower precision shunt voltage reference manufactured by Analog Devices Inc., housed in an 8-lead plastic SOIC (SO-8) package. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 20ppm/°C over the commercial operating range of 0°C to 70°C. The device maintains regulation at an ultralow operating current of 800nA, featuring less than 1Ω dynamic impedance and low temperature cycling hysteresis.

Voltage Reference Feature Summary

• Achieves high precision through trimmed thin-film resistors and curvature correction techniques
• Maintains stable voltage regulation at ultralow operating currents
• Operates stably with capacitive loads without requiring external compensation capacitors

Voltage Reference Applications

• Portable meters
• Precision regulators
• A/D and D/A converters
• Calibrators

Voltage Reference Procurement Notes

Verify that the component matches the specific B-grade specification for the 2.5V variant, ensuring the temperature coefficient does not exceed 20ppm/°C. Confirm the package type is the standard 8-lead SOIC and check for RoHS compliance status as indicated on the datasheet. Ensure handling precautions are observed due to ESD sensitivity.

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 or LT1004. Consider board layout carefully to minimize leakage effects, potentially utilizing guard rings around the Do Not Connect pins to maintain optimal performance.

Voltage Reference Part Context

This part belongs to the LT1389 series of nanopower precision shunt voltage references from Analog Devices. The series includes variants with different output voltages such as 1.25V, 4.096V, and 5V. The LT1389 utilizes bandgap reference technology designed for applications demanding minimal quiescent current alongside high stability.

Voltage Reference Replacement Considerations

LT1389ACS8-2.5#TRPBF

Voltage Reference FAQ

Does the LT1389 require an output compensation capacitor?

No, the LT1389 does not require an output compensation capacitor but remains stable with capacitive loads.

What is the minimum operating current for the 2.5V version?

The minimum operating current for the LT1389BCS8-2.5 is 0.7mA.