LM4040D20ILPRE3

Overview

The LM4040D20ILPRE3 is a micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048V with an initial accuracy tolerance of ±1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 150ppm/°C. Electrical characteristics include a cathode current of 80µA and a maximum output current of 15mA. Noise performance is specified at 35µVrms over the 10Hz to 10kHz frequency band. The component is housed in a TO-92-3 (TO-226AA) through-hole package.

Feature Summary

• Micropower operation with low cathode current consumption
• High precision fixed voltage output with tight initial accuracy tolerance
• Low noise performance suitable for sensitive analog circuits
• Robust thermal stability across standard industrial temperature ranges

Applications

• Portable instrumentation requiring stable reference voltages
• Battery-powered measurement systems
• Data acquisition systems
• Handheld meters

Procurement Notes

Verify the specific suffix 'E3' confirms lead-free compliance and RoHS status as per manufacturer documentation. Confirm the package type matches the required TO-92-3 form factor for your PCB layout. Ensure the operating temperature range meets your environmental requirements. Cross-reference the datasheet for any recent design changes or obsolescence notices.

Selection Notes

Select this component when a precise 2.048V reference is needed in a through-hole configuration. Consider the ±1% tolerance against tighter accuracy requirements if higher precision is necessary. Evaluate the 150ppm/°C temperature coefficient for applications with significant thermal variations. Compare power consumption needs against the 80µA cathode current specification.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references from Texas Instruments. The series offers various fixed voltage options and accuracy grades. The 'D' designation indicates the ±1% accuracy class, while '20' specifies the 2.048V output voltage. The 'ILPR' suffix denotes the TO-92-3 package and tape-and-reel packaging format.

Replacement Considerations

LM4040D20ILPR is the non-RoHS equivalent. LM4040D20IDCKR is a surface-mount alternative in SC-70-5. LM4040BIM3-4.1 is a different voltage and package variant.