LM4140ACM-4.1/NOPB

Voltage Reference Overview

The LM4140ACM-4.1/NOPB is a micropower low-dropout voltage reference manufactured by Texas Instruments, housed in an SOIC-8 package. It provides a nominal output voltage of 4.096 V with an initial accuracy of 0.1%. The device features a temperature coefficient of 6 PPM/°C and operates within a junction temperature range of 0°C to +70°C. Maximum input voltage is 5.6 V, with a maximum shunt current of 8 mA. Quiescent current ranges from 230 µA to 265 µA.

Voltage Reference Feature Summary

• Micropower operation with low quiescent current consumption suitable for battery-powered applications
• Low dropout performance allowing stable regulation with minimal input-to-output voltage differential
• High precision output with tight initial accuracy and low temperature drift characteristics

Voltage Reference Applications

• Precision analog-to-digital converter (ADC) references
• Digital-to-analog converter (DAC) voltage sources
• Portable instrumentation requiring stable reference voltages

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance as per Texas Instruments documentation. Confirm the package type matches the required PCB footprint for SOIC-8. Ensure the operating temperature range meets the application's environmental constraints. Cross-reference the datasheet revision to confirm electrical parameters remain unchanged.

Voltage Reference Selection Notes

Select this component when a stable 4.096 V reference is required with high accuracy and low power consumption. The SOIC-8 package offers a compact solution for surface-mount designs. Consider the 6 PPM/°C temperature coefficient for applications demanding stability over varying thermal conditions. Verify that the input voltage remains within the specified maximum limit to ensure proper regulation.

Voltage Reference Part Context

This part belongs to the LM4140 series of micropower low-dropout voltage references from Texas Instruments. The series includes various fixed output voltages and accuracy grades. The LM4140ACM variant specifically targets applications requiring high precision and low noise in a small form factor. The NOPB suffix denotes a non-phosphorus bromide lead-free product compliant with international environmental standards.