LT1461ACS8-3.3#TRPBF

Voltage Reference Overview

The LT1461ACS8-3.3#TRPBF 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 specified commercial temperature range of 0°C to 70°C and draws a typical supply current of 35µA, with a maximum of 50µA. It features a shutdown pin for power management and supports a minimum output drive current of 50mA. The component is housed in an 8-lead plastic SO package and is supplied in tape and reel format.

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 shutdown 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 ordering suffix #TRPBF confirms the tape and reel packaging configuration required for automated assembly processes. Ensure the AC grade designation matches the required initial accuracy and temperature coefficient specifications for the target application environment. Confirm the 8-lead SO package dimensions align with the designated PCB footprint and soldering profile constraints.

Voltage Reference Selection Notes

Select this part when a fixed 3.3V reference with high precision is required alongside low quiescent current consumption. The AC grade offers the highest accuracy tier within the commercial temperature range. Consider the shutdown functionality if system power management requires active control of the reference output state. Evaluate the thermal performance under maximum load conditions to ensure junction temperatures remain within safe operating limits.

Voltage Reference Part Context

This component belongs to the LT1461 family of micropower precision low dropout series voltage references. The family includes various output voltage options such as 2.5V, 3V, 4.096V, and 5V, along with different accuracy grades (AC, BC, CC) and temperature ranges (Commercial, Industrial, High). The LT1461 series is designed to replace standard LDO regulators in precision applications requiring stable reference voltages.

Voltage Reference Replacement Considerations

LT1461ACS8-3.3#PBF