LM4132AMF-3.0

Voltage Reference Overview

The LM4132AMF-3.0 is a precision series voltage reference from Texas Instruments, delivering a fixed 3 V output in a compact SOT-23-5 package. It features an initial accuracy of ±0.05% and a low temperature coefficient of 10 ppm/°C within the 0°C to 85°C range. The device operates with a supply current of 60 µA and supports up to 20 mA load current. It functions within a junction temperature range of -40°C to +125°C and requires an input voltage between VREF + 400 mV and 5.5 V.

Voltage Reference Feature Summary

• EEPROM-based laser trimming for high accuracy and stability
• Low dropout operation without requiring output capacitors
• Dedicated enable pin for ultra-low power shutdown mode

Voltage Reference Applications

• Precision data acquisition systems
• Battery-powered instrumentation
• Portable test equipment

Voltage Reference Procurement Notes

Verify the specific suffix 'AMF' against the official datasheet orderable addendum to confirm availability and exact specifications. Ensure the component meets AEC-Q100 requirements if automotive qualification is necessary for the target application environment.

Voltage Reference Selection Notes

Select this part when high precision (±0.05%) and low drift are critical. The CMOS architecture offers cost advantages over bipolar references while maintaining comparable performance. Consider the 60 µA quiescent current for battery life optimization.

Voltage Reference Part Context

Part of the LM4132 family of precision voltage references. The 'A' grade denotes the highest accuracy tier (±0.05%), while 'MFX' indicates the SOT-23-5 surface mount package variant. This model provides a fixed 3 V output option within the broader product line.

Voltage Reference FAQ

Does the LM4132AMF-3.0 require an output capacitor?

No, the device is stable with low-ESR ceramic capacitors and does not strictly require an output capacitor or buffer amplifier for operation.

What is the shutdown current when the enable pin is low?

The supply current drops to 3 µA maximum when the EN pin is driven to 0 V.