Texas Instruments

LM4128DMFX-1.8

LM4128DMFX-1.8 Description

The LM4128DMFX-1.8 is a fixed output voltage reference IC designed by Texas Instruments, offering a precise and stable voltage output of 1.8V. This device is part of the LM4128 series, known for its high accuracy and reliability in various electronic applications. The LM4128DMFX-1.8 features a tolerance of ±1%, ensuring tight voltage regulation and consistency across different operating conditions. It operates within an input voltage range of 2.2V to 5.5V, making it suitable for a wide array of power supply configurations.

The LM4128DMFX-1.8 is designed for surface mount applications, utilizing a SOT23-5 package that is both compact and robust, ideal for space-constrained designs. The device has a low supply current of 100µA, which is advantageous for low-power applications, and it can deliver an output current of up to 20 mA. Additionally, the LM4128DMFX-1.8 has a temperature coefficient of 100ppm/°C, ensuring minimal drift over a wide temperature range, which is crucial for maintaining accuracy in precision circuits.

LM4128DMFX-1.8 Features

• Fixed Output Voltage: Provides a stable 1.8V output voltage, ideal for applications requiring a precise reference voltage.
• High Accuracy: ±1% tolerance ensures accurate voltage regulation, making it suitable for sensitive analog circuits.
• Low Supply Current: Consumes only 100µA, making it energy-efficient and suitable for battery-powered devices.
• Wide Input Voltage Range: Operates between 2.2V and 5.5V, offering flexibility in power supply requirements.
• Low Temperature Coefficient: 100ppm/°C ensures minimal voltage drift over temperature, maintaining accuracy in varying conditions.
• Surface Mount Package: The SOT23-5 package is compact and suitable for high-density PCB designs.
• High Output Current Capability: Can deliver up to 20 mA, supporting a variety of load requirements.
• Moisture Sensitivity Level 1: Unlimited exposure time, making it suitable for various manufacturing processes.

LM4128DMFX-1.8 Applications

The LM4128DMFX-1.8 is well-suited for applications requiring a precise and stable voltage reference. Its high accuracy and low drift characteristics make it ideal for:

• Analog-to-Digital Converters (ADCs): Provides a stable reference voltage to ensure accurate digital conversions.
• Digital-to-Analog Converters (DACs): Ensures consistent analog output levels.
• Precision Measurement Instruments: Maintains accuracy in voltage measurements and calibration.
• Battery-Powered Devices: Low supply current and wide input voltage range make it suitable for portable electronics.
• Medical Devices: Ensures reliable and accurate voltage references in critical medical applications.
• Industrial Control Systems: Offers stable voltage references for sensors and control circuits.

Conclusion of LM4128DMFX-1.8

The LM4128DMFX-1.8 from Texas Instruments is a high-performance voltage reference IC that offers precise voltage regulation with a tolerance of ±1%. Its low supply current, wide input voltage range, and low temperature coefficient make it a versatile and reliable choice for a variety of applications. The compact SOT23-5 package and surface mount design ensure it fits seamlessly into modern, space-constrained designs. Despite being marked as obsolete, the LM4128DMFX-1.8 remains a valuable component for engineers seeking a dependable voltage reference in precision analog circuits.