LM4040C20ILPE3

Overview

The LM4040C20ILPE3 is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 2.048 V with an initial accuracy tolerance of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a low noise characteristic of 35 µVrms between 10 Hz and 10 kHz. It utilizes a TO-92-3 through-hole package, supports a maximum cathode current of 15 mA, and requires a minimum operating current of 80 µA.

Feature Summary

• Micropower shunt topology designed for low current consumption applications
• High precision fixed output voltage with tight initial accuracy tolerance
• Low noise performance suitable for sensitive analog signal conditioning

Applications

• Portable battery-powered instrumentation systems
• Data acquisition and measurement circuits
• Analog-to-digital converter reference inputs

Procurement Notes

Verify the specific suffix 'E3' indicates lead-free compliance and RoHS status during procurement. Confirm the TO-92-3 package type matches the target PCB footprint requirements. Ensure the 2.048 V output voltage aligns with the system design specifications before ordering.

Selection Notes

Select this component when a stable, low-noise reference voltage is required in a through-hole configuration. The ±0.5% accuracy meets standard precision requirements for general-purpose analog circuits. Consider the 80 µA minimum current draw to ensure proper regulation under light load conditions.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The ILP suffix denotes the TO-92 plastic package variant, distinguishing it from surface-mount SOT-23 options within the same product line.

Replacement Considerations

LM4040C20ILPR serves as a direct functional equivalent within the same series.