LT1790BIS6-3.3#TRPBF

Voltage Reference Overview

The LT1790BIS6-3.3#TRPBF is a micropower low dropout series voltage reference from Analog Devices, featuring a fixed 3.3V output with B-grade 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 ThinSOT (TSOT-23) format, 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.
• Minimized thermally induced hysteresis through specialized manufacturing processes.
• Low power dissipation 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 ordering suffix #TRPBF confirms tape and reel packaging. Confirm the 'I' designation indicates the –40°C to 85°C industrial temperature range. Ensure the 'B' grade matches the required ±0.1% initial accuracy specification. Check for lead-free finish compliance if required by assembly standards.

Voltage Reference Selection Notes

Select this part when a fixed 3.3V reference with ±0.1% accuracy is required in a compact SOT-23 package. The industrial temperature rating makes it suitable for harsh environments. Consider the low supply current for battery life optimization. Verify input voltage requirements exceed the minimum dropout voltage for the intended load conditions.

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, 2.5V, and 5V. The LT1790 combines high accuracy with small size, distinguishing it from shunt references that require higher idle currents. It is designed for applications demanding precision in limited space.

Voltage Reference Replacement Considerations

LT1790BIS6-3.3#PBF

Voltage Reference FAQ

Can the LT1790BIS6-3.3#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 performance similar to its positive reference mode.

What technology is used to achieve the low temperature coefficient?

The LT1790 uses curvature compensation to obtain a low temperature coefficient, along with trimmed precision thin-film resistors and post-package trimming to increase output accuracy.