LM4040C82IDBZR

Overview

The LM4040C82IDBZR is a precision micropower shunt voltage reference from Texas Instruments, featuring a fixed output of 8.192V. It belongs to the C grade with an initial accuracy of ±0.5% and a temperature coefficient of 100ppm/°C. The device operates within a free-air temperature range of -40°C to 85°C and requires a minimum cathode current of 45μA typical. It supports a maximum cathode current of 15mA and exhibits low dynamic impedance and wideband noise of 35μVRMS. Packaged in a space-saving SOT-23-3 (DBZ) format, it is stable with all capacitive loads without requiring external output capacitors.

Feature Summary

• Provides a fixed 8.192V reference with tight tolerance and low temperature drift for high-precision applications.
• Operates efficiently at micropower levels with a minimum cathode current requirement of 45μA typical.
• Maintains stability across all capacitive load conditions without the need for additional output capacitors.

Applications

• Data-acquisition systems
• Energy infrastructure monitoring
• Analog input modules
• Field transmitters

Procurement Notes

Verify the specific suffix 'I' confirms the industrial temperature range (-40°C to 85°C) and 'DBZR' indicates the SOT-23-3 tape-and-reel packaging. Confirm that the C grade designation aligns with the required ±0.5% initial accuracy and 100ppm/°C temperature coefficient specifications for your design constraints.

Selection Notes

Select this component when a stable 8.192V reference is needed in a compact surface-mount package. Ensure the application circuit provides sufficient headroom voltage above 8.192V and can supply the minimum 45μA cathode current. Consider the SOT-23-3 footprint if board space is limited compared to larger packages like TO-92 or SC70.

Part Context

This part is a member of the LM4040 series of shunt voltage references, which offers various fixed output voltages and grades. The 'C' grade denotes ±0.5% accuracy, while the 'I' suffix specifies the industrial temperature range. The 'DBZR' suffix identifies the SOT-23-3 package type supplied in reel form for automated assembly processes.

Replacement Considerations

LM4040C82IDBZT: Same electrical specifications but supplied in cut-tape packaging instead of reel.