LM4040A30IDCKR

Overview

The LM4040A30IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 3 V with an initial accuracy of 0.1%. The device operates within a temperature range of -40°C to +85°C and features a temperature coefficient of 100 PPM/°C. It draws a typical operating supply current of 45 µA and supports a maximum cathode current of 15 mA. The component is housed in a compact SC-70-5 surface-mount package, designed for space-constrained applications requiring high stability.

Feature Summary

• Delivers high-precision voltage regulation with 0.1% initial accuracy
• Optimized for low-power systems with 45 µA quiescent current consumption
• Maintains stable performance across industrial temperature ranges

Applications

• Portable battery-powered instrumentation
• Data acquisition systems
• Microcontroller analog-to-digital converter references

Procurement Notes

Verify the specific suffix IDCKR against the official datasheet to confirm the SC-70-5 package and tape-and-reel configuration. Confirm RoHS compliance status and check for any recent product lifecycle notifications or obsolescence warnings from Texas Instruments before finalizing procurement plans.

Selection Notes

Select this component when 0.1% accuracy is required alongside minimal power consumption. Ensure the circuit design accommodates the minimum operating current of 60 µA and the maximum load current of 15 mA. Verify that the SC-70-5 footprint matches the PCB layout requirements.

Part Context

This part belongs to the LM4040 series of micropower shunt voltage references. The 'A' grade denotes the highest accuracy tier (0.1%), while the '30' indicates the 3 V nominal output. The IDCKR suffix specifies the SC-70-5 surface-mount package variant.

Replacement Considerations

LM4040A30IDCKRE4