LM4040B10IDCKR

Overview

The LM4040B10IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 10V with an initial accuracy of ±0.2%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100ppm/°C. Key electrical parameters include a maximum shunt current of 15mA, a minimum cathode current of 95µA, and low noise characteristics of 80µVrms from 10Hz to 10kHz. It is housed in a compact SC-70-5 surface-mount package.

Feature Summary

• Provides high-precision fixed voltage reference with tight initial accuracy tolerance
• Operates as a micropower shunt regulator with low minimum operating current
• Features low noise performance suitable for sensitive analog circuits
• Designed for stable operation across extended industrial temperature ranges

Applications

• Portable instrumentation requiring precise voltage references
• Battery-powered measurement systems
• Data acquisition systems
• Temperature sensing circuits

Procurement Notes

Verify the specific suffix IDCKR corresponds to the SC-70-5 package and tape-and-reel orientation. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments. Ensure the component matches the required 10V output and ±0.2% accuracy specifications for your design.

Selection Notes

Select this component when a fixed 10V reference is needed in a small SC-70-5 footprint. It is suitable for applications requiring low power consumption and high accuracy. Compare against other LM4040 variants if different voltages or accuracies are required. Ensure the 15mA max current capability meets the load requirements.

Part Context

This part belongs to the LM4040 family of precision micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The LM4040 series is designed for space-constrained applications where low power and high precision are critical.

Replacement Considerations

Check for direct substitutes within the LM4040 family with compatible voltage and accuracy. Verify pinout compatibility for SC-70-5 packages. Consider LM4040 variants with similar thermal coefficients if temperature stability is a primary concern.