LT1790BIS6-5#TRPBF

Voltage Reference Overview

The LT1790BIS6-5#TRPBF is a micropower low dropout series voltage reference from Analog Devices, featuring a fixed 5V output with B-grade initial accuracy of ±0.1% and a maximum temperature coefficient of 25ppm/°C. It operates within an industrial temperature range of –40°C to 85°C and supports supply voltages up to 18V. The device utilizes curvature compensation and post-package trimming for high precision. Packaged in a 6-lead TSOT-23, it draws a maximum supply current of 80µA and can both source and sink current.

Voltage Reference Feature Summary

• Curvature compensation combined with trimmed thin-film resistors ensures high output accuracy and low drift.
• Capable of sourcing and sinking current, allowing operation as a micropower negative voltage reference.
• Post-package trimming significantly reduces temperature coefficient and enhances output stability.
• Minimized thermally induced hysteresis maintains performance across temperature cycles.

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 #TRPBF confirms tape and reel packaging and lead-free finish. Confirm the 'I' designation indicates the –40°C to 85°C industrial temperature range. Ensure the 'S6' code matches the required 6-lead TSOT-23 package. Cross-reference the 'B' grade for the specified ±0.1% accuracy requirement against datasheet limits.

Voltage Reference Selection Notes

Select this part when a fixed 5V reference with ±0.1% accuracy is required in a compact SOT-23 form factor. It is suitable for battery-powered designs due to its low quiescent current and low dropout characteristics. Consider the 25ppm/°C temperature coefficient for applications requiring moderate thermal stability without the higher cost of A-grade parts.

Voltage Reference Part Context

This component belongs to the LT1790 family of micropower SOT-23 low dropout references. The family offers various output voltages including 1.25V, 2.048V, 2.5V, 3V, 3.3V, 4.096V, and 5V. Variants are available in A-grade (0.05% accuracy) and B-grade (0.1% accuracy) with corresponding temperature coefficients of 10ppm/°C and 25ppm/°C respectively.

Voltage Reference Replacement Considerations

LT1790BIS6-5#PBF (Bulk Packaging)

Voltage Reference FAQ

Can the LT1790BIS6-5#TRPBF operate as a negative voltage reference?

Yes, because the device can sink current, it can be configured to operate as a micropower negative voltage reference with the same performance characteristics as a positive reference.

What is the maximum input voltage for this device?

The LT1790 supports a wide supply range with a maximum input voltage of 18V.