LT1790BCS6-2.5#TRMPBF

Voltage Reference Overview

The LT1790BCS6-2.5#TRMPBF is a micropower series voltage reference from Analog Devices, housed in a 6-lead TSOT-23 package. It provides a fixed output voltage of 2.5V with an initial accuracy tolerance of ±0.1%. The device operates within a commercial temperature range of 0°C to 70°C and supports input voltages from 3V to 18V. Key electrical specifications include a maximum supply current of 80µA, a typical temperature coefficient of 25ppm/°C, and a maximum dropout voltage of 450mV when sourcing 5mA. It features low thermal hysteresis and can both source and sink current.

Voltage Reference Feature Summary

• Combines curvature compensation and trimmed thin-film resistors for high accuracy and low drift
• Capable of sourcing and sinking current for flexible positive or negative reference configurations
• Minimizes thermally induced hysteresis through specialized post-package trimming
• Designed for battery-operated systems due to low power dissipation and small footprint

Voltage Reference Applications

• Handheld Instruments
• Negative Voltage References
• Industrial Control Systems
• Data Acquisition Systems
• Battery-Operated Equipment

Voltage Reference Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel packaging containing 500 units, distinct from standard bulk or other reel quantities. Confirm the BC grade designation corresponds to the 0.1% accuracy and 25ppm/°C temperature coefficient specifications required for the design. Ensure the commercial temperature range (0°C to 70°C) aligns with the operational environment, as industrial grades are available with different suffixes.

Voltage Reference Selection Notes

Select this component when a compact, low-power series reference is needed for 2.5V applications requiring ±0.1% initial accuracy. It is suitable for designs where space is constrained by the TSOT-23 package. Consider the 80µA supply current for battery life calculations. If wider temperature ranges or higher accuracy (0.05%) are required, evaluate the AIS6 or ACS6 variants respectively.

Voltage Reference Part Context

This part belongs to the LT1790 family of micropower SOT-23 low dropout references. The family utilizes curvature compensation to achieve low temperature coefficients across various output voltage options including 1.25V, 2.048V, 3V, 3.3V, 4.096V, and 5V. The BC grade specifically denotes the 0.1% accuracy tier within the commercial temperature range segment of the product line.

Voltage Reference Replacement Considerations

LT1790BCS6-2.5#TRPBF

Voltage Reference FAQ

Can the LT1790BCS6-2.5 be used as a negative voltage reference?

Yes, because the device can sink current, it can operate as a micropower negative voltage reference while maintaining performance similar to its positive reference operation.

What is the minimum operating voltage for this specific 2.5V output variant?

The minimum operating voltage is 2.95V when sourcing 5mA and 2.90V when sinking 1mA, ensuring the output remains within the specified 0.1% accuracy.