LT1461ACS8-3#PBF

Voltage Reference Overview

The LT1461ACS8-3#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 over the commercial operating range of 0°C to 70°C. The device operates from a supply voltage between VOUT + 0.5V and 20V, drawing a typical supply current of 35µA. It features a shutdown pin for power management and includes thermal limiting protection.

Voltage Reference Feature Summary

• Advanced curvature compensation techniques ensure low temperature drift and high stability
• Integrated shutdown control allows for system power down and load current switching
• Built-in thermal limiting protects 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 sourcing. Confirm the ACS8 grade meets the required 0.04% accuracy and 3ppm/°C drift specifications for your design. Check availability status as distribution channels may list limited stock or end-of-life notifications for this specific commercial grade part number.

Voltage Reference Selection Notes

Select this component when a fixed 3V reference with high precision is required in portable applications. The low 35µA supply current supports battery life extension, while the 50mA drive capability suits moderate load demands. Ensure the input voltage remains within the specified dropout limits to maintain regulation performance under varying load conditions.

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. Other variants in the series offer different output voltages such as 2.5V, 3.3V, 4.096V, and 5V, along with industrial and high-temperature grades.

Voltage Reference Replacement Considerations

LT1461BCS8-3#PBF offers lower accuracy (±0.06%) and higher drift (7ppm/°C). LT1461CCS8-3#PBF provides even lower precision (±0.08%, 12ppm/°C). For wider temperature ranges, consider LT1461AIS8-3#PBF (-40°C to 85°C) or LT1461DHS8-3#PBF (-40°C to 125°C).