LT1461CIS8-4#PBF

Voltage Reference Overview

The LT1461CIS8-4#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 output voltage of 4.096V with an initial accuracy of ±0.08% and a maximum temperature coefficient of 12ppm/°C. The device operates within a specified temperature range of –40°C to 85°C, drawing a typical supply current of 35µA with a maximum of 70µA. It supports a minimum output drive current of 50mA and features a shutdown pin for power management.

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 #PBF corresponds to the tube packaging variant rather than tape and reel. Confirm the 'I' grade designation matches the required industrial temperature range of –40°C to 85°C. Ensure the 'C' accuracy grade meets the ±0.08% initial accuracy specification for the target application. Cross-reference the lead-free finish status with current environmental compliance requirements.

Voltage Reference Selection Notes

Select this component when a stable 4.096V reference is needed with moderate precision (±0.08%) in industrial environments. The low dropout characteristic ensures efficiency in battery-powered systems. Consider the 35µA quiescent current for power-sensitive designs. Verify that the 50mA output drive meets the load requirements without exceeding thermal limits in the SO-8 package.

Voltage Reference Part Context

This part belongs to the LT1461 family of micropower precision low dropout series voltage references. The family offers various voltage options including 2.5V, 3V, 3.3V, 4.096V, and 5V. Different grades (A, B, C, D) provide varying levels of accuracy and temperature coefficient performance across commercial, industrial, and high-temperature ranges.

Voltage Reference Replacement Considerations

LT1461CIS8-4#TRPBF