LM4050BIM3X-8.2

Voltage Reference Overview

The LM4050BIM3X-8.2 is a precision micropower shunt voltage reference from Texas Instruments, featuring a fixed reverse breakdown voltage of 8.192 V at an operating current (IR) of 150 μA. It offers an initial accuracy of ±0.2% and operates within an industrial temperature range of −40°C to +85°C. The device utilizes a SOT-23 package with dimensions of 3 mm × 1.3 mm. Key electrical specifications include a maximum temperature coefficient of 50 ppm/°C, a minimum operating current of 74 μA at 25°C, and a wideband noise of 150 μVrms across the 10 Hz to 10 kHz frequency band.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while ensuring stability with any capacitive load
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure high accuracy
• Incorporates bandgap reference temperature drift curvature correction for stable performance

Voltage Reference Applications

• Portable, battery-powered equipment
• Data acquisition systems
• Instrumentation
• Process control
• Precision audio components

Voltage Reference Procurement Notes

Verify that the component matches the specific B-grade tolerance and 8.192 V output requirement. Confirm the ordering suffix indicates the X variant for tape-and-reel packaging. Ensure the application environment remains within the specified industrial temperature limits of -40°C to +85°C. Check datasheet notes regarding power dissipation derating at elevated temperatures to maintain reliability.

Voltage Reference Selection Notes

Select this part when space constraints require a subminiature SOT-23 package. Choose the B grade for applications needing ±0.2% initial accuracy without the cost of A-grade precision. Consider the 8.192 V output level for compatibility with standard ADC reference inputs. Evaluate the 15 mA maximum operating current against system power budgets and thermal management capabilities.

Voltage Reference Part Context

This component belongs to the LM4050-N family of precision micropower shunt voltage references manufactured by Texas Instruments. The family provides various fixed voltage options including 2.048 V, 2.5 V, 4.096 V, 5 V, and 10 V. The LM4050 series is designed for applications requiring high stability and low power consumption in compact form factors.

Voltage Reference Replacement Considerations

LM4050AIM3X-8.2/NOPB

Voltage Reference FAQ

Does the LM4050BIM3X-8.2 require an external capacitor for stability?

No, the LM4050-N design eliminates the need for an external stabilizing capacitor while ensuring stability with any capacitive load.

What is the typical wideband noise specification for this device?

The typical wideband noise is 150 μVrms measured between 10 Hz and 10 kHz at an operating current of 150 μA.