LM4041C12IDCKR

Overview

The LM4041C12IDCKR is a precision shunt voltage reference from Texas Instruments featuring a fixed output of 1.225V with an initial accuracy of ±0.5%. It operates within a temperature range of -40°C to +85°C and exhibits a maximum temperature coefficient of 100 ppm/°C. The device supports a wide operating current range from 45µA to 12mA, ensuring stability across varying load conditions. It delivers low output noise, typically 20µVRMS in the 10Hz to 10kHz bandwidth. Designed for surface mount applications, it utilizes a compact SC-70-5 package.

Feature Summary

• Provides stable reference voltage without requiring external capacitors for operation
• Maintains stability when connected to any capacitive load
• Offers low dynamic impedance and low output noise characteristics
• Utilizes micro-power design suitable for battery-powered portable applications

Applications

• Data acquisition systems
• Portable electronic devices
• Battery-powered equipment
• Precision audio circuits

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-5 package and industrial temperature grade during procurement. Confirm RoHS compliance status as indicated in official documentation. Ensure ordering quantities match distributor reel or cut-tape specifications. Cross-reference datasheet revisions to confirm pinout consistency. Validate that the component meets environmental standards required for the target assembly process.

Selection Notes

Select this component when a fixed 1.225V reference is required in a small surface-mount footprint. It is appropriate for designs needing ±0.5% accuracy and low noise performance. Consider the 45µA minimum current requirement for biasing circuits. Evaluate thermal management needs given the 100 ppm/°C temperature coefficient. Compare against adjustable variants if flexible voltage settings are necessary instead of a fixed output.

Part Context

This part belongs to the LM4041 series of precision micropower shunt voltage references. The series includes various accuracy grades and output voltages. The LM4041 family is designed for applications requiring high stability and low power consumption. It complements other Texas Instruments voltage reference products by offering a fixed option in a compact package.

Replacement Considerations

LM4041C12IDBZT offers identical electrical specifications but uses a SOT-23-3 package instead of SC-70-5. LM4041C12IDCKRG4 is the lead-free version of the same package and specification. Verify pin compatibility and physical dimensions before substituting packages.