LT1790ACS6-2.048#TRMPBF

Voltage Reference Overview

The LT1790ACS6-2.048#TRMPBF is a micropower series voltage reference from Analog Devices, delivering a fixed output of 2.048V in a 6-lead TSOT-23 package. It features an initial accuracy of ±0.05% and a temperature coefficient of 10ppm/°C. The device operates with a supply current of 60µA maximum and supports a wide input voltage range up to 18V. Designed for commercial applications, it functions within a specified temperature range of 0°C to 70°C.

Voltage Reference Feature Summary

• Combines high accuracy and low drift with low power dissipation using curvature compensation and trimmed thin-film resistors.
• Capable of sourcing and sinking current, allowing operation as a micropower negative voltage reference.
• Minimizes thermally induced hysteresis through post-package trimming and careful design.
• Offers low dropout voltage and small profile suitable for battery-operated systems.

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 with lead-free finish. Confirm the 'AC' grade corresponds to the required 0.05% accuracy and 10ppm/°C drift specifications. Ensure the commercial temperature range (0°C to 70°C) meets system requirements, as industrial variants use different suffixes. Check for RoHS compliance documentation.

Voltage Reference Selection Notes

Select this part when high precision is needed in a compact SOT-23 form factor. The AC grade provides tighter tolerance than the BC grade. Consider the 60µA supply current for battery life calculations. Verify that the 18V maximum input voltage suits the system power rail. Ensure the commercial temperature range is sufficient for the operating environment.

Voltage Reference Part Context

This component belongs to the LT1790 family of micropower SOT-23 low dropout references. The family includes various output voltages and grades (A/B) with different accuracy and temperature coefficient specifications. The LT1790 series is designed to replace shunt references by eliminating the need to idle load current, offering significant power savings in portable designs.

Voltage Reference Replacement Considerations

LT1790AIS6-2.048#TRMPBF offers the same electrical performance but with an extended industrial temperature range (-40°C to 85°C). LT1790BCS6-2.048#TRMPBF provides lower accuracy (0.1%) and higher drift (25ppm/°C) at potentially lower cost. Verify pinout compatibility and thermal characteristics when substituting.