LT1461AIS8-5#PBF

Voltage Reference Overview

The LT1461AIS8-5#PBF is a micropower precision low dropout series voltage reference from Analog Devices, housed in an 8-lead plastic SO package. It provides a fixed 5V output with an initial accuracy of ±0.04% and a maximum temperature coefficient of 3ppm/°C over the industrial range of –40°C to 85°C. The device draws a typical supply current of 35µA and supports a minimum output drive current of 50mA. It features a shutdown pin for power management and operates with an input voltage range up to 20V.

Voltage Reference Feature Summary

• Combines high accuracy and low drift with low supply current and high output drive capability
• Utilizes advanced curvature compensation techniques and trimmed precision thin-film resistors
• Includes a shutdown feature to switch full load currents and enable system power down
• Incorporates thermal limiting protection against overload conditions

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify the specific suffix #PBF indicates lead-free finish and tube packaging when ordering. Confirm the AIS8 designation corresponds to the industrial temperature grade of –40°C to 85°C. Ensure compatibility with 8-lead SOIC footprints during PCB design. Check for any automotive-specific variants if AEC-Q100 qualification is required for the target application environment.

Voltage Reference Selection Notes

Select this component for applications requiring high precision with minimal power consumption. The 5V output option suits systems needing a stable reference near standard logic levels. Consider the 3ppm/°C temperature coefficient for environments with significant thermal variations within the industrial range. Evaluate the 50mA drive capability against load requirements to ensure adequate performance without exceeding thermal limits.

Voltage Reference Part Context

This part belongs to the LT1461 family of micropower precision low dropout series voltage references. The family offers various output voltages including 2.5V, 3V, 3.3V, 4.096V, and 5V. Different grades such as A, B, C, and D provide varying levels of accuracy and temperature coefficient specifications. The AIS8 variant specifically targets industrial temperature ranges with high precision.

Voltage Reference Replacement Considerations

LT1461AIS8-5#TRPBF serves as the tape and reel equivalent for automated assembly processes.