LM4041C12IDCKRE4

Overview

The LM4041C12IDCKRE4 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed nominal output voltage of 1.225V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a maximum voltage temperature coefficient of 100 ppm/°C. It utilizes a SC-70-5 (SOT-353) surface-mount package. The typical operating current ranges from 45µA to 12mA, with a maximum shunt current of 12mA. Output noise is typically 20µVRMS in the 10Hz to 10kHz bandwidth.

Feature Summary

• Provides stable reference voltage without requiring external capacitors for stability across all capacitive loads.
• Offers low dynamic impedance and low output noise for high-precision applications.
• Utilizes Zener-zap reverse breakdown voltage trimming during wafer fabrication to ensure tight output tolerance.
• Designed for portable applications with minimal quiescent current consumption.

Applications

• Data acquisition systems
• Portable battery-powered equipment
• Precision audio circuits
• Process control instrumentation

Procurement Notes

Verify the complete part number including the RE4 suffix against official Texas Instruments documentation to confirm specific tape-and-reel packaging details and environmental compliance status. Ensure the component meets the required industrial temperature range specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a fixed 1.225V reference with ±0.5% accuracy is required in a compact SC-70-5 package. It is suitable for designs needing low power consumption and stability without external compensation capacitors. Consider the 100 ppm/°C temperature coefficient for thermal performance requirements within the -40°C to +85°C operating range.

Part Context

This device belongs to the LM4041 series of precision micropower shunt voltage references. The series includes adjustable versions and various accuracy grades (A, B, C, D). The LM4041C12 variant specifically denotes the fixed 1.225V output with C-grade (±0.5%) accuracy. The RE4 suffix indicates specific manufacturing and packaging configurations defined by the manufacturer.

Replacement Considerations

LM4041C12IDCKR

FAQ

Does the LM4041C12IDCKRE4 require an external capacitor for stability?

No, the device is designed to be stable with all capacitive loads and does not require an external output capacitor.

What is the typical output noise specification for this voltage reference?

The typical output noise is 20µVRMS measured over a frequency range of 10Hz to 10kHz.