LM4040C25IDBZR

Overview

The LM4040C25IDBZR is a precision shunt voltage reference IC manufactured by Texas Instruments. It provides a fixed output voltage of 2.5V with an initial accuracy of ±0.5%. The device operates within a temperature range of -40°C to +85°C and features a low noise characteristic of 35µVrms (10Hz to 10kHz). Key electrical parameters include a maximum cathode current of 15mA, a minimum operating current of 75µA, and a temperature coefficient of 100ppm/°C. It is housed in a compact SOT-23-3 surface-mount package.

Feature Summary

• Provides stable fixed voltage reference for analog circuits
• Low noise performance suitable for sensitive signal processing
• Compact three-terminal surface-mount design

Applications

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

Procurement Notes

Verify the specific suffix IDBZR confirms the tape-and-reel packaging format required for automated assembly processes. Confirm the C-grade designation aligns with the required ±0.5% accuracy tolerance for the target application. Ensure the SOT-23-3 footprint matches the PCB layout specifications before finalizing procurement orders.

Selection Notes

Select this component when a 2.5V reference with high precision is needed in a small form factor. The low quiescent current makes it suitable for battery-operated devices. Compare against other LM4040 variants if different output voltages or tighter accuracy grades are required for the specific circuit design constraints.

Part Context

This part belongs to the LM4040 family of micropower shunt voltage references from Texas Instruments. The family offers various fixed output voltages and accuracy grades. The 'C' suffix indicates the ±0.5% accuracy class, while 'DBZR' specifies the SOT-23-3 package and reel packaging configuration.

Replacement Considerations

LM4040C25IDBZTG4 is a lead-free variant of the same component.