LT1389BCS8-4.096#PBF

Voltage Reference Overview

The LT1389BCS8-4.096#PBF is a nanopower precision shunt voltage reference manufactured by Analog Devices Inc., housed in an 8-lead plastic SO (SOIC-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 0°C to 70°C operating range. The device maintains regulation at an ultralow operating current of 1mA, drawing only 1.5µW of power. It features less than 1Ω dynamic impedance and does not require an output compensation capacitor for stability.

Voltage Reference Feature Summary

• Utilizes trimmed precision thin-film resistors and improved curvature correction techniques to achieve high initial voltage accuracy.
• Maintains stable voltage regulation at an ultralow operating current of 1mA without requiring an external output compensation capacitor.
• Features low dynamic impedance, facilitating easy integration with unregulated power supplies.
• Designed with advanced processing and packaging to minimize temperature cycling hysteresis.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the specific part number matches the required B-grade specifications, including the 4.096V output and 0.075% accuracy. Confirm the package type is the standard 8-lead plastic SOIC. Ensure the procurement documentation aligns with the manufacturer's official datasheet specifications for the LT1389 series.

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 its suitability for applications where board leakage must be minimized through proper guard ring layout techniques.

Voltage Reference Part Context

The LT1389 series represents a family of nanopower precision shunt voltage references from Analog Devices. This specific model belongs to the B-grade subset, offering tighter initial accuracy compared to the A-grade variant. The series is designed to replace older generation references while providing superior performance in terms of power efficiency and thermal stability.

Voltage Reference Replacement Considerations

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

Voltage Reference FAQ

Does the LT1389BCS8-4.096#PBF 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 4.096V version?

The minimum operating current for the 4.096V version is 1mA.