LT1790ACS6-1.25#TRMPBF

Voltage Reference Overview

The LT1790ACS6-1.25#TRMPBF is a micropower low dropout series voltage reference from Analog Devices, housed in a 6-lead TSOT-23 package. It provides a fixed output voltage of 1.25V with an initial accuracy of ±0.05% and a maximum temperature coefficient of 10ppm/°C. The device operates within a supply voltage range of 2.6V to 18V and draws a maximum supply current of 60µA. Designed for commercial applications, it functions reliably between 0°C and 70°C.

Voltage Reference Feature Summary

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

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates tape and reel packaging containing 500 units. Confirm the 'S6' designation corresponds to the 6-lead Plastic TSOT-23 package. Ensure the 'A' grade matches the required 0.05% accuracy and 10ppm/°C drift specifications for your design. Check that the commercial temperature range (0°C to 70°C) meets your operational environment requirements.

Voltage Reference Selection Notes

Select this component when high precision is required in a compact surface-mount form factor. The A-grade specification offers tighter tolerances than the B-grade alternative. Consider the low dropout voltage characteristics for battery-powered designs where input voltage may approach the output level. Verify that the 60µA supply current aligns with power budget constraints.

Voltage Reference Part Context

This part belongs to the LT1790 family of micropower SOT-23 low dropout references. The family includes various output voltages such as 2.048V, 2.5V, 3.3V, and 5V. The 'ACS6' nomenclature denotes the A-grade accuracy, commercial temperature range, and TSOT-23-6 package type within the broader product line.

Voltage Reference Replacement Considerations

LT1790BCS6-1.25#TRMPBF: Offers 0.1% accuracy and 25ppm/°C drift.

Voltage Reference FAQ

Can the LT1790ACS6-1.25 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 mode.

What is the minimum operating voltage for this reference?

The minimum operating voltage depends on the load condition; it is typically 1.95V at no load and increases to 2.95V when sourcing 5mA.