LM4040B82IDBZR

Overview

The LM4040B82IDBZR is a fixed shunt voltage reference from Texas Instruments, providing an output of 8.192 V with ±0.2% initial accuracy. It operates within a temperature range of -40°C to +85°C and features a typical temperature coefficient of 100 ppm/°C. The device draws a cathode current of approximately 95 µA and supports a maximum shunt current of 15 mA. Packaged in a compact SOT-23-3 surface-mount case, it delivers low noise performance suitable for precision applications.

Feature Summary

• Provides stable 8.192 V reference with high initial accuracy
• Operates efficiently at low quiescent currents
• Compact three-terminal surface-mount design

Applications

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

Procurement Notes

Verify the specific suffix IDBZR corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8.192 V output aligns with system requirements, as this value is distinct from standard integer voltages. Ensure thermal management considerations are addressed for the SOT-23 package within the intended operating environment.

Selection Notes

Select this component when an 8.192 V reference is specifically needed rather than a standard 5 V or 2.5 V option. The B-grade accuracy offers tighter tolerance than C-grade parts while maintaining low power consumption. Consider the SOT-23 footprint constraints and verify compatibility with existing PCB layouts designed for three-terminal shunt references.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references. The series is characterized by its ability to provide precise voltage regulation in small packages. The LM4040B variant specifically denotes the ±0.2% accuracy class, distinguishing it from lower precision options within the same product line.

Replacement Considerations

LM4040B82IDBZRG4 is a verified equivalent offering identical electrical specifications and pinout configuration.