LT1461ACS8-3.3#PBF

Voltage Reference Overview

The LT1461ACS8-3.3#PBF is a micropower precision low dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed 3.3V output with an initial accuracy of ±0.04% and a maximum temperature coefficient of 3ppm/°C. The device operates within a commercial temperature range of 0°C to 70°C, drawing a typical supply current of 35µA. It features a shutdown pin for power management and supports up to 50mA output drive current.

Voltage Reference Feature Summary

• Advanced curvature compensation techniques ensure low temperature drift and high stability.
• Integrated shutdown control allows switching full load currents and system power down.
• Built-in thermal limiting protects the component from overload conditions.

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 tube packaging when sourcing. Confirm the ACS8 grade matches the required 0.04% accuracy and 3ppm/°C drift specifications. Ensure the 0°C to 70°C commercial temperature range aligns with the operational environment requirements before finalizing procurement.

Voltage Reference Selection Notes

Select this part for applications requiring high precision with minimal power consumption. The 3.3V output suits digital logic systems directly. Consider the 50mA drive capability for regulator designs. Verify that the SOIC-8 package fits the board layout constraints and that the commercial temperature range meets the design specifications.

Voltage Reference Part Context

This component belongs to the LT1461 family of micropower precision low dropout series voltage references. The family combines high accuracy with low supply current and high output drive capabilities. Other variants in the series offer different voltage options and temperature grades, such as industrial or automotive specifications.

Voltage Reference Replacement Considerations

LT1461BCS8-3.3#PBF offers lower accuracy (±0.06%) and higher drift (7ppm/°C). LT1461CCS8-3.3#PBF provides even lower accuracy (±0.08%) and higher drift (12ppm/°C). LT1461AIS8-3.3#PBF maintains similar accuracy but extends the operating temperature range to –40°C to 85°C.