LT1461BIS8-4#PBF

Voltage Reference Overview

The LT1461BIS8-4#PBF is a micropower precision low dropout series voltage reference manufactured by Analog Devices Inc. It provides a fixed output voltage of 4V with an initial accuracy of ±0.06% and a maximum temperature coefficient of 7ppm/°C. The device operates within a specified industrial temperature range of –40°C to +85°C and is housed in an 8-lead plastic SO package. It draws a typical supply current of 35µA, supporting low power applications while maintaining high output drive capabilities.

Voltage Reference Feature Summary

• Advanced curvature compensation techniques ensure low temperature drift and high stability across operating conditions.
• Integrated shutdown feature allows for system power down and full load current switching with minimal standby current consumption.
• Built-in thermal limiting protects the component from damage during overload or excessive junction temperature 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 finish and tube packaging when sourcing. Confirm the BIS grade corresponds to the required –40°C to +85°C industrial temperature range and ±0.06% accuracy specifications. Ensure compatibility with 8-lead SOIC footprint requirements for the target PCB layout.

Voltage Reference Selection Notes

Select this part for designs requiring a stable 4V reference with tight tolerance and low drift in industrial environments. Consider the 35µA supply current for battery-operated systems where power efficiency is critical. Evaluate the 50mA output drive capability against load requirements to ensure adequate performance without external buffering.

Voltage Reference Part Context

This component belongs to the LT1461 family of micropower precision low dropout series voltage references. The family offers various output voltages including 2.5V, 3V, 3.3V, 4.096V, and 5V options. The BIS designation specifically denotes the industrial temperature grade with 7ppm/°C max drift and ±0.06% initial accuracy.

Voltage Reference Replacement Considerations

LT1461BIS8-4#TRPBF is the tape and reel version of the same electrical specification and package.