LM4040CIM3-4.1+T

Overview

The LM4040CIM3-4.1+T is a precision micropower shunt voltage reference manufactured by Analog Devices / Maxim Integrated. It provides a fixed reverse-breakdown output voltage of 4.096V with an initial accuracy of 0.5%. The device features a maximum temperature coefficient of 100ppm/°C and operates within a temperature range of -40°C to +85°C. It utilizes a SOT-23-3 surface-mount package and supports a shunt current range from 60μA to 15mA.

Feature Summary

• Laser-trimmed resistors ensure precise initial accuracy across multiple grades.
• Low dynamic impedance maintains stable reverse breakdown voltage over wide operating currents.
• No external stabilizing capacitor required while ensuring stability with any capacitive load.

Applications

• Portable, battery-powered equipment
• Notebook computers
• Cell phones
• Industrial process controls

Procurement Notes

Verify the specific suffix '+T' indicates tape and reel packaging and '+' denotes lead-free/RoHS compliance as per official documentation. Confirm the 'I' grade designation corresponds to the industrial temperature range (-40°C to +85°C) rather than extended ranges. Ensure sourcing channels provide genuine components matching the Analog Devices / Maxim Integrated manufacturer identification.

Selection Notes

Select this component when a 4.096V reference with 0.5% initial accuracy is required in a space-constrained SOT-23 package. It is suitable for applications needing low power consumption and stability without external compensation capacitors. Consider the 100ppm/°C temperature coefficient for thermal drift requirements within the specified industrial temperature range.

Part Context

The LM4040 series consists of improved precision micropower shunt voltage references available in various fixed reverse-breakdown voltages including 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. The family offers multiple accuracy grades and package options such as SC70 and SOT-23 to accommodate different design constraints.

Replacement Considerations

LM4040BIM3-4.1+T (0.2% accuracy)

FAQ

Does the LM4040CIM3-4.1+T require an external capacitor for stability?

No, the device does not require an external stabilizing capacitor and is guaranteed stable with any capacitive load.

What is the pin configuration for the SOT-23 package?

Pin 1 is the positive terminal, Pin 2 is the negative terminal, and Pin 3 is No Connection (N.C.). Pin 3 must be left unconnected or connected to Pin 2.