LM4050AIM3X-8.2

Voltage Reference Overview

The LM4050AIM3X-8.2 is a precision micropower shunt voltage reference manufactured by Texas Instruments, featuring an 8.192 V fixed reverse breakdown voltage with ±0.1% initial accuracy at 25°C. It operates within an extended temperature range of -40°C to +125°C and maintains a maximum temperature coefficient of 50 ppm/°C. The device utilizes a compact SOT-23 surface-mount package and requires no external stabilizing capacitor for stability. It supports a wide operating current range from 74 μA to 15 mA, ensuring stable performance across varying load conditions.

Voltage Reference Feature Summary

• Eliminates the need for external stabilizing capacitors while maintaining stability with any capacitive load
• Utilizes laser-trimmed resistors and bandgap curvature correction for high precision
• Provides low dynamic impedance for stable reverse breakdown voltage accuracy over wide current ranges

Voltage Reference Applications

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

Voltage Reference Procurement Notes

Verify that the ordering suffix 'X' indicates tape-and-reel packaging rather than cut tape. Confirm the 'A' grade designation corresponds to the required ±0.1% tolerance specification. Ensure the component meets the extended temperature range requirements (-40°C to +125°C) for your specific application environment before finalizing procurement.

Voltage Reference Selection Notes

Select this component when space constraints require a subminiature SOT-23 package. Choose this part if the design demands high initial accuracy (±0.1%) without requiring external compensation capacitors. It is suitable for applications needing a stable 8.192 V reference in industrial or automotive-grade environments where extended temperature operation is mandatory.

Voltage Reference Part Context

This component belongs to the LM4050-N family of precision micropower shunt voltage references. The family offers multiple fixed reverse breakdown voltages including 2.048 V, 2.5 V, 4.096 V, 5 V, 8.192 V, and 10 V. The LM4050 series is designed for space-critical applications and features fuse and Zener-zap reverse breakdown voltage trim during wafer sort to ensure tight accuracy specifications.

Voltage Reference Replacement Considerations

LM4050CEM3X-8.2/NOPB: Offers identical electrical characteristics but with ±0.5% initial accuracy instead of ±0.1%. Suitable if tighter tolerance is not required.

Voltage Reference FAQ

Does the LM4050AIM3X-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 minimum operating current for the 8.2 V option?

The minimum operating current is typically 74 μA at 25°C and increases to 95 μA across the full industrial temperature range.