LT1790AIS6-5#TRPBF

Voltage Reference Overview

The LT1790AIS6-5#TRPBF is a micropower low dropout series voltage reference from Analog Devices, housed in a 6-lead plastic TSOT-23 package. It provides a fixed nominal output voltage of 5V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates within a supply voltage range of 5.5V to 18V and draws a maximum supply current of 80µA. It supports both sourcing up to 5mA and sinking up to 3mA currents. The specified operating temperature range is -40°C to +85°C.

Voltage Reference Feature Summary

• Curvature compensation and post-package trimming ensure high output accuracy and low drift.
• Capable of sourcing and sinking current for flexible positive or negative reference configurations.
• Low thermal hysteresis minimizes output shifts caused by package stress during temperature cycling.

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 indicates tape and reel packaging when ordering. Confirm the 'I' designation corresponds to the industrial temperature grade (-40°C to +85°C). Ensure the 'S6' package code matches the required 6-lead TSOT-23 footprint. Cross-reference the part number against the manufacturer's latest order information to confirm availability and lead times.

Voltage Reference Selection Notes

Select this component for applications requiring high precision in a small form factor. The A-grade accuracy (±0.05%) suits critical data acquisition paths. Consider the low dropout voltage for battery-powered systems where headroom is limited. Verify that the load current requirements do not exceed the 5mA source or 3mA sink limits defined in the electrical characteristics.

Voltage Reference Part Context

This part 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 commercial (C) and industrial (I) temperature grades with A (0.05%) and B (0.1%) accuracy options.

Voltage Reference Replacement Considerations

LT1790AIS6-5#TRMPBF

Voltage Reference FAQ

Can the LT1790AIS6-5 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 the same performance characteristics as a positive reference.

What is the minimum input-output voltage differential required?

For the 5V option, the minimum dropout voltage is typically 50mV at no load and increases to 450mV when sourcing 5mA or sinking 3mA.