LM4132AMF-4.1

Voltage Reference Overview

The LM4132AMF-4.1/NOPB is a precision series voltage reference manufactured by Texas Instruments, housed in a compact SOT-23-5 surface-mount package. It provides a fixed nominal output voltage of 4.1 V with an initial accuracy of ±0.05%. The device features a low temperature coefficient of 20 ppm/°C and supports a maximum input voltage of 6 V. It operates within a junction temperature range of -40°C to +125°C and includes a shutdown enable feature for power management.

Voltage Reference Feature Summary

• Provides high-precision fixed voltage output with tight initial accuracy tolerance
• Features ultra-low temperature drift characteristics for stable performance across wide thermal ranges
• Integrates a shutdown control pin to minimize current consumption during inactive periods

Voltage Reference Applications

• High-resolution data acquisition systems requiring stable reference voltages
• Precision analog-to-digital converter (ADC) front-end circuits
• Industrial instrumentation and sensor signal conditioning

Voltage Reference Procurement Notes

Verify the specific suffix 'NOPB' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm that the 'A' grade designation corresponds to the required ±0.05% initial accuracy specification for your application. Ensure the SOT-23-5 footprint matches your PCB layout constraints before finalizing procurement orders.

Voltage Reference Selection Notes

Select this component when applications demand superior long-term stability and minimal thermal drift compared to standard references. The integrated shutdown function makes it suitable for battery-powered devices where quiescent current reduction is critical. Verify that the 4.1 V output level aligns with the input requirements of downstream circuitry without necessitating additional scaling.

Voltage Reference Part Context

This part belongs to the LM4132 family of micropower shunt voltage references designed for space-constrained designs. It serves as a direct replacement for older National Semiconductor versions, maintaining functional compatibility while adhering to modern environmental standards. The device is categorized under PMIC voltage references within the broader power management IC portfolio.

Voltage Reference Replacement Considerations

The LM4132AMF-4.1 is the active equivalent to the previously designated LM4132AMF-41. Designers transitioning from legacy parts should verify that the pinout remains identical to ensure drop-in compatibility without modifying existing board layouts or schematics.