LM4051AIM3X-ADJ

Voltage Reference Overview

The LM4051AIM3X-ADJ is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides an adjustable output voltage ranging from 1.24 V to 10 V using external resistors. The device features an initial accuracy of 0.1% and a temperature coefficient of 50 ppm/°C. It operates within a current range up to 12 mA and functions reliably across temperatures from -40°C to +85°C. Packaged in a compact SOT-23-3 surface-mount format, it requires no external stabilization capacitor for stability with capacitive loads.

Voltage Reference Feature Summary

• Adjustable output voltage selectable between 1.24 V and 10 V via external resistor divider
• High precision with 0.1% initial accuracy and low temperature coefficient
• Micropower operation suitable for battery-powered applications
• Inherently stable with any capacitive load without requiring external compensation

Voltage Reference Applications

• Data acquisition systems
• Portable instrumentation
• Battery-powered equipment
• Precision measurement devices

Voltage Reference Procurement Notes

Verify the specific suffix and tape/reel configuration against the manufacturer's latest documentation before ordering. Confirm that the operating temperature range meets the application requirements, as industrial variants differ from extended temperature options. Ensure the external resistor network supports the desired output voltage within the specified adjustment limits.

Voltage Reference Selection Notes

Select this component when space-constrained designs require a high-accuracy adjustable reference. The SOT-23-3 package minimizes board area while maintaining electrical performance. Consider the 12 mA maximum current limit for load driving capabilities. Verify that the 50 ppm/°C drift aligns with system thermal stability needs compared to lower-drift alternatives.

Voltage Reference Part Context

This part belongs to the LM4051 family of micropower shunt references. It shares core architectural features with fixed-voltage variants like the LM4051-1.2 but offers flexibility through external programming. The 'A' designation indicates the highest accuracy grade within the series, ensuring tight tolerance control during manufacturing.

Voltage Reference Replacement Considerations

LM4050AIM3X-4.1/NOPB: Fixed 4.096V output; not directly interchangeable due to fixed vs. adjustable nature. TL4051CIDBZT: Lower accuracy (0.5%) and different temperature range (-40 to 85C); verify if reduced precision is acceptable.