LM4140BCM-1.0/NOPB

Voltage Reference Overview

The LM4140BCM-1.0/NOPB is a micropower low-dropout series voltage reference from Texas Instruments, housed in an 8-pin SOIC package. It delivers a nominal output voltage of 1.024 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 3 ppm/°C and operates within a supply voltage range up to 5.6 V. It draws a typical quiescent current of 230 µA and supports a maximum shunt current of 8 mA. The component functions across a commercial temperature range of 0°C to +70°C.

Voltage Reference Feature Summary

• Provides high precision voltage referencing with 0.1% initial accuracy
• Features ultra-low temperature drift of 3 ppm/°C for stable performance
• Operates as a micropower device with minimal quiescent current consumption
• Includes an enable pin for efficient power management control

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) reference sources
• Digital-to-analog converter (DAC) voltage references
• Battery-powered instrumentation requiring low power consumption
• Portable measurement equipment calibration circuits

Voltage Reference Procurement Notes

Verify the specific suffix NOPB indicates lead-free packaging compliance when sourcing replacements. Confirm that the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the operating temperature range of 0°C to +70°C aligns with your environmental specifications. Cross-reference the manufacturer datasheet for any recent design warnings or application notes related to stability and layout.

Voltage Reference Selection Notes

Select this component when a sub-2V reference with exceptional thermal stability is required. The 3 ppm/°C coefficient makes it suitable for high-resolution data acquisition systems. Consider the 230 µA quiescent current for battery life optimization. Verify that the 8 mA load capability meets your circuit's current demands without exceeding the maximum rating.

Voltage Reference Part Context

This part belongs to the LM4140 series of micropower series voltage references. It shares architectural similarities with other variants like the LM4140ACM-2.0/NOPB but differs in output voltage and temperature coefficient grades. The series is designed for applications demanding precision and low power in compact surface-mount packages.

Voltage Reference Replacement Considerations

LM4140BCM-1.0 is a direct functional equivalent to LM4140BCM-1.0/NOPB, differing only in lead-free status. Other LM4140 variants with different output voltages are not electrically compatible substitutes.