LM4040C82IDCKR

Overview

The LM4040C82IDCKR is a precision micropower shunt voltage reference manufactured by Texas Instruments. It provides a fixed output voltage of 8.192V with an initial accuracy tolerance of ±0.5%. The device operates within an ambient temperature range of -40°C to 85°C and features a maximum average temperature coefficient of 100ppm/°C. It is housed in a space-saving SC-70 (DCK) package with five pins, including two no-connect terminals. The component requires a minimum cathode current of 45µA for regulation and supports a maximum continuous cathode current of 15mA.

Feature Summary

• Maintains stable output voltage across wide operating currents and temperatures due to low dynamic impedance and low noise characteristics.
• Operates without external capacitors while remaining stable with all capacitive loads.
• Utilizes fuse and Zener-zap reverse breakdown voltage trim during wafer sort to achieve tight output tolerances.

Applications

• Data-Acquisition Systems
• Energy Infrastructure
• Analog Input Modules
• Field Transmitters

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum to confirm pinout compatibility and thermal metrics. Ensure the selected grade meets the required initial accuracy and temperature coefficient specifications for the target application environment. Cross-reference the datasheet revision history for any recent design or specification changes that may affect implementation.

Selection Notes

Select this component when a compact surface-mount solution is required for precision voltage referencing in industrial environments. The C-grade offers a balance of cost and performance with 0.5% accuracy. Consider the extended temperature Q-grade variant if operation beyond 85°C is necessary. Evaluate the SC-70 footprint constraints against available PCB real estate.

Part Context

This part belongs to the LM4040 series of shunt voltage references from Texas Instruments. The series includes A, B, C, and D grades offering varying levels of accuracy and temperature stability. The 'I' suffix denotes the industrial temperature range (-40°C to 85°C), while 'Q' indicates the extended range. The 'DCK' identifier specifies the 5-pin SC-70 package type.

Replacement Considerations

LM4040C82IDCKRG4