LT1461BIS8-5#TRPBF

Voltage Reference Overview

The LT1461BIS8-5#TRPBF is a micropower precision low dropout series voltage reference from Analog Devices, packaged in an 8-lead plastic SOIC with tape and reel configuration. It provides a fixed 5V output with an initial accuracy of ±0.06% and a maximum temperature coefficient of 7ppm/°C over the industrial 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 operates with an input voltage range up to 20V.

Voltage Reference Feature Summary

• Combines high accuracy and low drift with micropower consumption and high output drive capability
• Utilizes advanced curvature compensation and trimmed precision thin-film resistors
• Includes a shutdown feature for system power down and load current switching
• Incorporates thermal limiting 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 #TRPBF confirms the tape and reel packaging format required for automated assembly processes. Confirm the 'I' grade designation matches the intended industrial temperature operating range of –40°C to 85°C for your application environment. Ensure the 8-lead SOIC package dimensions align with your PCB footprint design constraints.

Voltage Reference Selection Notes

Select this component when a fixed 5V reference with ±0.06% initial accuracy is required alongside low quiescent current consumption. The 7ppm/°C temperature coefficient specification suits applications demanding stable performance across varying industrial temperatures. Consider the 50mA output drive capability if the reference must directly supply moderate load currents without external buffering.

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, utilizing band-gap reference technology. The LT1461 series is designed to balance precision with power efficiency, making it suitable for battery-operated devices where long life and accurate referencing are critical.

Voltage Reference Replacement Considerations

LT1461BIS8-5#PBF (Tube Packaging)

Voltage Reference FAQ

What is the function of Pin 3 on the LT1461BIS8-5#TRPBF?

Pin 3 is the Shutdown (SHDN) input. Driving this pin low shuts off the load current, reducing supply current to a maximum of 35µA. The device operates normally when this pin is open or held greater than or equal to 2.4V.

How does the LT1461 handle thermal overload conditions?

The device incorporates thermal limiting protection. If the junction temperature exceeds approximately 150°C due to high power dissipation, the thermal shutdown circuit will turn off the reference to protect the part from damage.