LT1461CIS8-3#PBF

Voltage Reference Overview

The LT1461CIS8-3#PBF is a micropower precision low dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed 3V output with an initial accuracy of ±0.08% and a maximum temperature coefficient of 5ppm/°C. The device operates within a specified temperature range of –40°C to +85°C and draws a typical supply current of 35µA, with a maximum of 70µA. It features a shutdown pin for power management and supports up to 100mA output current. The component is housed in an 8-lead plastic SOIC package.

Voltage Reference Feature Summary

• Advanced curvature compensation techniques ensure low temperature coefficient and high output accuracy.
• Integrated shutdown feature allows switching full load currents and enables system power down modes.
• Thermal shutdown protection safeguards the device against overload conditions.

Voltage Reference Applications

• A/D and D/A Converters
• Precision Regulators
• Handheld Instruments

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging. Confirm the IS8 designation corresponds to the industrial temperature grade of –40°C to +85°C. Ensure the ordering information matches the required 3V output option within the LT1461 family specifications.

Voltage Reference Selection Notes

Select this part when a fixed 3V reference with ±0.08% initial accuracy is required. The 5ppm/°C temperature coefficient suits applications needing stability over the industrial temperature range. Consider the 35µA supply current for low-power designs and the shutdown capability for energy management.

Voltage Reference Part Context

This component belongs to the LT1461 family of micropower precision low dropout series voltage references. The family combines high accuracy and low drift with low supply current and high output drive capabilities. Other options in the series include different voltage outputs and accuracy grades such as ACS8, BCS8, and DHS8 variants.

Voltage Reference Replacement Considerations

LT1461CIS8-3#TRPBF is the tape and reel version of the same electrical specification and package.

Voltage Reference FAQ

What is the function of Pin 3 on the LT1461CIS8-3#PBF?

Pin 3 is the Shutdown (SHDN) input. Driving it low shuts off the load current, reducing supply current to a maximum of 35µA. It operates normally when open or greater than or equal to 2.4V.

How does the LT1461CIS8-3#PBF handle thermal overload?

The device includes thermal shutdown protection that turns off the part if the junction temperature exceeds approximately 150°C, protecting it from damage during overload conditions.