LT1461BIS8-5#PBF

Voltage Reference Overview

The LT1461BIS8-5#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 ±0.06% and a maximum temperature coefficient of 7ppm/°C over the industrial temperature 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 includes thermal limiting protection.

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 suffix #PBF indicates lead-free finish and tube packaging. Confirm the 'I' grade corresponds to the –40°C to 85°C industrial temperature range and the 'B' grade specifies the ±0.06% initial accuracy. Ensure the 'S8' designation matches the required 8-lead SOIC footprint for your PCB layout.

Voltage Reference Selection Notes

Select this component when a fixed 5V reference is required with strict accuracy constraints in industrial environments. The low dropout characteristic ensures efficiency in battery-powered systems. Consider the shutdown functionality if system power management is necessary. Verify that the 50mA drive current meets the load requirements of the downstream circuitry.

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 and accuracy grades. The IS8 suffix denotes the industrial temperature range and SOIC-8 package. Other variants include commercial (CS8) and high-temperature (HS8) options with different accuracy levels.

Voltage Reference Replacement Considerations

LT1461BIS8-5#TRPBF is the tape and reel version of the same electrical specification and package.