LT1461AIS8-3.3#PBF

Voltage Reference Overview

The LT1461AIS8-3.3#PBF is a micropower precision low dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 3.3V with an initial accuracy of ±0.04% and a maximum temperature coefficient of 3ppm/°C. The device operates within a specified temperature range of –40°C to 85°C and draws a maximum supply current of 70µA. It features a shutdown pin for power management, thermal limiting protection, and high output drive capability.

Voltage Reference Feature Summary

• Combines very high accuracy and low drift with low supply current and high output drive using advanced curvature compensation techniques.
• Includes a shutdown feature that allows switching full load currents and enables system power down while minimizing supply current.
• Incorporates thermal limiting to protect the part from overload conditions and indefinite output short-circuit duration capability.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific ordering suffix #PBF indicates lead-free finish and tube packaging when sourcing. Confirm the AIS8 designation corresponds to the –40°C to 85°C industrial temperature grade. Ensure compatibility with 8-lead plastic SO packages. Check for automotive-specific variants if AEC-Q100 qualification is required for your application environment.

Voltage Reference Selection Notes

Select this component for applications requiring high precision in portable or low-power environments due to its micropower consumption. The 3.3V output is suitable for standard logic levels. Consider the 3ppm/°C max temperature coefficient for systems demanding minimal drift over the industrial temperature range. Verify input voltage requirements stay within the specified limits relative to the output.

Voltage Reference Part Context

This part belongs to the LT1461 family of micropower precision low dropout series voltage references. The family utilizes trimmed precision thin-film resistors to achieve high output accuracy. Variants are available in different output voltages (2.5V, 3V, 3.3V, 4.096V, 5V) and temperature grades (Commercial, Industrial, High). The AIS8 suffix specifically denotes the Industrial temperature range version in an 8-lead plastic SO package.

Voltage Reference Replacement Considerations

LT1461AIS8-3.3#TRPBF is the tape and reel equivalent of this part number.