Texas Instruments

LM4140ACM-1.2

LM4140ACM-1.2 Description

The LM4140ACM-1.2 is a precision voltage reference IC designed for applications requiring high accuracy and stability. Manufactured by Texas Instruments, this device is part of the Power Management (PMIC) category and is known for its exceptional performance in providing a stable and accurate voltage reference. The LM4140ACM-1.2 features a fixed output voltage of 1.25V with a tolerance of ±0.1%, ensuring precise voltage regulation. It operates within an input voltage range of 1.8V to 5.5V, making it suitable for a variety of power supply configurations. The device is designed for surface mount applications and comes in a tube package, facilitating easy integration into compact and high-density designs.

LM4140ACM-1.2 Features

• High Accuracy: The LM4140ACM-1.2 offers a tight tolerance of ±0.1%, ensuring that the output voltage remains highly stable and accurate, which is crucial for precision applications.
• Low Temperature Coefficient: With a temperature coefficient of 3ppm/°C, the device maintains its performance across the operating temperature range of 0°C to 70°C, minimizing drift and ensuring consistent performance.
• Low Supply Current: The IC operates with a supply current of only 375µA, making it energy-efficient and suitable for low-power applications.
• High Output Current Capability: The LM4140ACM-1.2 can provide up to 8 mA of output current, which is sufficient for driving various loads without compromising stability.
• Series Reference Type: As a series reference, it offers a simple and reliable solution for voltage regulation, ensuring that the output voltage is well-controlled and stable.
• Moisture Sensitivity Level: With an MSL rating of 1 (Unlimited), the device is suitable for a wide range of environmental conditions, ensuring robustness and reliability.
• Compliance and Status: The LM4140ACM-1.2 is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations.

LM4140ACM-1.2 Applications

The LM4140ACM-1.2 is ideal for applications that demand high precision and stability in voltage reference. Some specific use cases include:

• Analog-to-Digital Converters (ADCs): The high accuracy and low temperature coefficient make it suitable for providing a stable reference voltage for ADCs, ensuring accurate conversion and minimizing errors.
• Digital-to-Analog Converters (DACs): The device can serve as a reliable reference for DACs, enabling precise output voltage control.
• Precision Voltage Regulators: The LM4140ACM-1.2 can be used in voltage regulator circuits to provide a stable reference voltage, enhancing the overall performance and stability of the power supply.
• Battery Management Systems: Its low supply current and high accuracy make it suitable for battery-powered devices, ensuring efficient power usage and accurate voltage regulation.
• Medical and Industrial Equipment: The device's precision and stability are beneficial in medical and industrial applications where accurate voltage references are critical for reliable operation.

Conclusion of LM4140ACM-1.2

The LM4140ACM-1.2 by Texas Instruments is a high-performance voltage reference IC that stands out for its precision, stability, and efficiency. Its low temperature coefficient, high output current capability, and low supply current make it an excellent choice for applications requiring accurate voltage regulation. Despite being marked as obsolete, the LM4140ACM-1.2 remains a reliable option for engineers and designers looking for a precision voltage reference solution. Its compliance with international regulations and robustness against environmental conditions further enhance its appeal. For applications such as ADCs, DACs, precision voltage regulators, and battery management systems, the LM4140ACM-1.2 offers a proven and effective solution.