LM4050AIM3-4.1+

Voltage Reference Overview

The LM4050AIM3-4.1+ is a precision two-terminal shunt voltage reference manufactured by Analog Devices Inc. (Maxim Integrated). It provides a fixed reverse breakdown output voltage of 4.096V with an initial accuracy of 0.1%. The device features a maximum temperature coefficient of 50ppm/°C, guaranteed over the industrial temperature range of -40°C to +125°C. It operates within a wide shunt current range from 60µA to 15mA and exhibits low dynamic impedance. The component is housed in a subminiature 3-pin SC-70 surface-mount package measuring 1.8mm x 1.8mm.

Voltage Reference Feature Summary

• Ultra-small 3-pin SC-70 surface-mount package for space-critical applications
• Laser-trimmed resistors ensure high initial accuracy
• No external stabilizing capacitor required for stability
• Low dynamic impedance ensures stable voltage across operating currents

Voltage Reference Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered systems needing micropower solutions
• Data acquisition systems utilizing analog-to-digital converters
• Industrial process control circuits

Voltage Reference Procurement Notes

Verify that the ordering suffix '+', indicating lead-free status, matches the specific procurement requirement. Confirm the manufacturer designation as Analog Devices Inc. or Maxim Integrated to ensure authenticity. Check the datasheet for the latest package outline dimensions and thermal characteristics relevant to the target PCB layout.

Voltage Reference Selection Notes

Select this part when a 4.096V reference with 0.1% initial accuracy is required in a compact SC-70 footprint. Ensure the application current stays within the 60µA to 15mA range to maintain specified performance. Consider the 50ppm/°C temperature coefficient against environmental extremes. Verify compatibility with the system's ground reference topology for shunt operation.

Voltage Reference Part Context

This component belongs to the LM4050/LM4051 family of precision micropower shunt voltage references. The series offers multiple fixed reverse breakdown voltages including 1.225V, 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The LM4050 variant specifically targets applications demanding high accuracy and small form factors compared to standard SOT-23 packages.

Voltage Reference Replacement Considerations

Direct substitutes include LM4050CEX3-4.1 and LM4050CEX3-4.1+. Cross-reference specifications for temperature coefficient and initial accuracy to ensure functional equivalence in the design.