LM4040C41IDCKR

Overview

The LM4040C41IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 4.096V with an initial accuracy tolerance of ±0.5%. The device features a temperature coefficient of 100ppm/°C and operates within an ambient temperature range of -40°C to 85°C. Packaged in a space-saving SC-70-5 (DCK) surface-mount format, it requires a minimum cathode current of 45μA typical and supports up to 15mA. The component exhibits low dynamic impedance and wideband noise characteristics suitable for sensitive analog circuits.

Feature Summary

• Provides stable reference voltage without requiring external output capacitors
• Maintains stability across all capacitive load conditions
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters
• Precision audio equipment

Procurement Notes

Verify the specific package type matches the design requirements, as the LM4040 series is available in multiple form factors including SOT-23 and TO-92. Confirm that the C-grade accuracy and industrial temperature range align with the system specifications before finalizing procurement orders.

Selection Notes

Select this component when a compact surface-mount solution is required for portable or space-constrained designs. The SC-70-5 package offers significant size reduction compared to traditional through-hole options while maintaining the electrical performance necessary for precision measurement applications.

Part Context

This part belongs to the LM4040 family of shunt voltage references designed for versatile integration into various electronic systems. The 'C' designation indicates the specific accuracy grade, while '41' specifies the 4.096V output voltage level. The 'DCK' suffix identifies the five-pin SC-70 package configuration used for surface mounting.

Replacement Considerations

LM4040C41IDCKRG4