LM4040DIM3X-3.0

Overview

The LM4040DIM3X-3.0 is a micropower shunt voltage reference manufactured by Texas Instruments, designed for precision applications requiring stable output voltages. It provides a fixed output of 3.0 V with an initial accuracy of ±1%. The device operates within a temperature range of -40°C to +85°C and features a maximum temperature coefficient of 150 ppm/°C. Key electrical specifications include a maximum shunt current of 15 mA and a typical operating cathode current of 70 µA. It exhibits low noise characteristics, specified at 35 µVrms between 10 Hz and 10 kHz. The component is housed in a compact SOT-23-3 surface-mount package, suitable for space-constrained designs.

Feature Summary

• Provides a fixed 3.0 V reference output with ±1% initial accuracy
• Operates with ultra-low power consumption suitable for battery-powered systems
• Maintains stability across the industrial temperature range from -40°C to +85°C
• Features low noise performance for sensitive analog signal conditioning

Applications

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

Procurement Notes

Verify the specific suffix 'X' indicates tape-and-reel packaging configuration when sourcing. Confirm RoHS compliance status as documentation may vary by production batch. Ensure the selected distributor supports the SOT-23-3 footprint compatibility for your PCB layout. Check for any recent Product Change Notifications regarding material or manufacturing site updates that may affect long-term availability.

Selection Notes

Select this component when a 3.0 V reference is required with moderate precision (±1%) and low quiescent current. Compare against LM4040CIM3X-3.0 if tighter tolerance (±0.5%) is needed, or LM4040BIM3X-3.0 for higher precision (±0.2%). Consider the SOT-23-3 package constraints and thermal dissipation capabilities relative to the maximum 15 mA shunt current limit in your circuit design.

Part Context

This part belongs to the LM4040-N family of micropower shunt voltage references from Texas Instruments. The series offers various output voltages including 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V. The 'D' suffix denotes the ±1% accuracy grade, while 'M3' specifies the SOT-23-3 package type. The 'X' typically indicates reel packaging. This family is engineered for high accuracy and low power operation in industrial and consumer electronics.

Replacement Considerations

LM4040DIM3X-3.0/NOPB is the lead-free version of this component. Verify pinout compatibility before substitution. Other accuracy grades like LM4040CIM3X-3.0 or LM4040BIM3X-3.0 share the same package but offer different tolerances.