LT1461AIS8-3#PBF

Voltage Reference Overview

The LT1461AIS8-3#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 ±0.04% and a maximum temperature coefficient of 3ppm/°C. The device operates within a specified temperature range of –40°C to 85°C and is housed in an 8-lead plastic SO package. It draws a typical supply current of 35µA and supports a minimum output drive current of 50mA. Key electrical parameters include a maximum dropout voltage of 300mV, line regulation of 2ppm/V, and load regulation of 12ppm/mA.

Voltage Reference Feature Summary

• Advanced curvature compensation techniques ensure low temperature drift and high output accuracy.
• Integrated shutdown feature allows for system power down and full load current switching.
• Thermal limiting protection safeguards the component against overload conditions.
• Low dropout voltage design maximizes battery life in portable applications.

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 when sourcing. Confirm the AIS8 designation corresponds to the industrial temperature grade of –40°C to 85°C. Ensure compatibility with 8-lead SOIC footprints during procurement planning. Cross-reference part markings such as 461AI3 for identification. Validate RoHS compliance status through official manufacturer documentation prior to integration.

Voltage Reference Selection Notes

Select this component for designs requiring high precision with minimal quiescent current consumption. The 3V output suits systems needing stable references without external scaling. Consider the 50mA drive capability for direct regulator applications. Evaluate thermal management requirements given the SO-8 package constraints. Verify that the 3ppm/°C drift meets long-term stability requirements for the target environment.

Voltage Reference Part Context

This part belongs to the LT1461 family of micropower precision low dropout series voltage references. The family combines bandgap reference technology with trimmed thin-film resistors. Variants offer different output voltages including 2.5V, 3.3V, 4.096V, and 5V. Temperature grades range from commercial to high-performance industrial options. The architecture supports both linear regulation and precise reference generation.

Voltage Reference Replacement Considerations

LT1461AIS8-3#TRPBF serves as the tape and reel equivalent for automated assembly processes. Other voltage variants within the LT1461AIS8 series share identical pinouts and functional characteristics. Direct substitutes require matching the 3V output, ±0.04% accuracy, and industrial temperature range specifications.