Texas Instruments

LM4140ACM-1.0

LM4140ACM-1.0 Description

The LM4140ACM-1.0 is a precision voltage reference IC designed by Texas Instruments, offering a fixed output voltage of 1.024V with a tolerance of ±0.1%. This device is part of the Power Management Integrated Circuits (PMIC) category and is housed in a surface-mount package, specifically an 8SOIC. It operates within an input voltage range of 1.8V to 5.5V and is capable of delivering up to 8 mA of output current. The LM4140ACM-1.0 features a low supply current of 375µA and a temperature coefficient of 3ppm/°C, ensuring stable performance across its operating temperature range of 0°C to 70°C. Although the product is now obsolete, it remains a notable reference for its precision and reliability in voltage regulation.

LM4140ACM-1.0 Features

• High Precision: The LM4140ACM-1.0 offers a tight tolerance of ±0.1%, making it suitable for applications requiring high accuracy.
• Low Temperature Coefficient: With a temperature coefficient of 3ppm/°C, the device maintains stable performance over its operating temperature range.
• Low Supply Current: Consuming only 375µA, this IC is energy-efficient, making it ideal for low-power applications.
• High Output Current: Capable of delivering up to 8 mA, it can support a variety of load requirements.
• Wide Input Voltage Range: Operates within an input voltage range of 1.8V to 5.5V, providing flexibility in power supply design.
• Surface Mount Packaging: The 8SOIC package is suitable for surface-mount technology, facilitating compact and reliable board designs.
• Series Reference Type: As a series reference, it provides a stable voltage source that can be cascaded for higher voltage outputs.

LM4140ACM-1.0 Applications

The LM4140ACM-1.0 is well-suited for a range of applications where precision voltage references are critical. These include:

• Analog-to-Digital Converters (ADCs): Provides a stable reference voltage for accurate conversions.
• Digital-to-Analog Converters (DACs): Ensures precise output levels for digital signals.
• Power Supplies: Acts as a reference for voltage regulators to maintain stable output voltages.
• Battery Management Systems: Offers a reliable reference for monitoring and controlling battery voltage levels.
• Medical Devices: Ensures accurate measurements in devices such as glucose meters and blood pressure monitors.
• Industrial Control Systems: Provides a stable reference for sensors and actuators in various industrial applications.

Conclusion of LM4140ACM-1.0

The LM4140ACM-1.0 from Texas Instruments is a high-precision voltage reference IC that stands out for its accuracy, stability, and low power consumption. Despite being obsolete, its technical specifications make it a benchmark for similar devices in the market. Its low temperature coefficient and high output current capability make it particularly useful in applications requiring stable and reliable voltage references. While newer alternatives may have emerged, the LM4140ACM-1.0 remains a testament to Texas Instruments' commitment to precision and reliability in power management solutions.