LT1461AIS8-4#TRPBF

Voltage Reference Overview

The LT1461AIS8-4#TRPBF is a micropower precision low dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 4.096V 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 typical supply current of 35µA. 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 consumption.
• Incorporates thermal shutdown protection to safeguard the component from overload conditions and excessive junction temperatures.

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific ordering suffix #TRPBF confirms tape and reel packaging rather than tube packaging when sourcing this part number. Confirm the AIS8 designation matches the required industrial temperature range of –40°C to 85°C for your application environment. Ensure compatibility with the 8-lead plastic SO package dimensions during PCB layout planning.

Voltage Reference Selection Notes

Select this component when precise voltage referencing is required in portable or battery-operated systems due to its low quiescent current. The 4.096V output is suitable for driving ADCs requiring standard reference levels. Consider the ±0.04% initial accuracy and 3ppm/°C drift specifications against system error budgets to ensure adequate precision without over-specifying.

Voltage Reference Part Context

This part belongs to the LT1461 family of micropower precision low dropout series voltage references. The family utilizes bandgap technology with trimmed precision thin-film resistors to achieve high output accuracy. Variants are available in different output voltages and accuracy grades, all sharing the same core architecture and low dropout characteristics.

Voltage Reference Replacement Considerations

LT1461AIS8-4#PBF