LM4040CIZ-4.1/NOPB

Overview

The LM4040CIZ-4.1/NOPB is a micropower shunt voltage reference manufactured by Texas Instruments, formerly National Semiconductor. It provides a fixed nominal output voltage of 4.096 V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40 °C to +85 °C and features a maximum temperature coefficient of 150 ppm/°C. It utilizes a TO-92-3 package and supports a maximum shunt current of 15 mA.

Feature Summary

• Provides stable reference voltage over industrial temperature ranges
• Micropower operation suitable for power-constrained designs
• High precision with low temperature drift characteristics

Applications

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

Procurement Notes

Verify the manufacturer designation as Texas Instruments, which acquired National Semiconductor. Confirm the specific suffix 'NOPB' indicates lead-free and RoHS compliance. Ensure the package type matches the required TO-92-3 footprint for the target application design.

Selection Notes

Select this component when a 4.096 V reference with 0.5% initial accuracy is required in a through-hole package. Consider the 150 ppm/°C temperature coefficient against stricter requirements that may necessitate the LM4040A or B variants. Verify operating temperature limits align with the -40 °C to +85 °C specification.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The family offers various output voltages including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. Accuracy grades include A (0.1%), B (0.2%), C (0.5%), and D (1%). The LM4040 series is designed for applications requiring high stability and low power consumption.

Replacement Considerations

LM4040CIZ-4.1/NOPB is functionally equivalent to other LM4040CIZ-4.1 variants from Texas Instruments. Cross-reference with LM4040CIM3-4.1/NOPB if surface mount SOT-23 packaging is acceptable instead of TO-92.