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LM385PWR-1-2

LM385PWR-1-2 Description

The LM385PWR-1-2 is a high-precision, low-power voltage reference designed for applications requiring stable and reliable voltage sources. Manufactured by National Semiconductor, this shunt voltage reference offers a fixed output voltage of 1.235V with a tolerance of ±2%. It is designed to operate within an ambient temperature range of 0°C to 70°C (TA), making it suitable for a wide range of industrial and consumer electronics applications.

The LM385PWR-1-2 features a surface-mount package, which is ideal for compact designs and high-density PCB layouts. It has a typical temperature coefficient of 20ppm/°C, ensuring minimal drift over the operating temperature range. The device can deliver up to 20 mA of output current, while maintaining a low cathode current of 15 µA, which contributes to its high efficiency and low power consumption.

LM385PWR-1-2 Features

• Precision Voltage Reference: The LM385PWR-1-2 provides a highly stable voltage reference with a fixed output of 1.235V, ensuring consistent performance across various operating conditions.
• Low Temperature Coefficient: With a typical temperature coefficient of 20ppm/°C, the LM385PWR-1-2 minimizes voltage drift due to temperature variations, enhancing the accuracy and reliability of the voltage reference.
• High Output Current Capability: The device can deliver up to 20 mA of output current, making it suitable for applications that require higher current loads without compromising performance.
• Low Noise: The LM385PWR-1-2 exhibits low noise levels, with a noise voltage of 60µVrms over the frequency range of 10Hz to 10kHz, ensuring clean and stable voltage output.
• Surface-Mount Compatibility: The surface-mount package of the LM385PWR-1-2 allows for easy integration into compact and high-density PCB designs, facilitating modern electronics manufacturing processes.
• Low Power Consumption: The device operates with a low cathode current of 15 µA, contributing to its high efficiency and suitability for low-power applications.

LM385PWR-1-2 Applications

The LM385PWR-1-2 is ideal for a variety of applications that require a stable and precise voltage reference. Some specific use cases include:

• Analog-to-Digital Converters (ADCs): The low noise and high precision of the LM385PWR-1-2 make it an excellent reference voltage source for ADCs, ensuring accurate and reliable digital conversions.
• Digital-to-Analog Converters (DACs): The stable output voltage of the LM385PWR-1-2 can be used as a reference for DACs, providing consistent and accurate analog output.
• Power Management Systems: The high output current capability and low power consumption of the LM385PWR-1-2 make it suitable for use in power management systems, where a reliable voltage reference is essential for efficient power regulation.
• Precision Measurement Equipment: The LM385PWR-1-2 can be used in precision measurement equipment, such as voltmeters and ammeters, to provide a stable reference voltage for accurate measurements.
• Battery Management Systems: The device's low temperature coefficient and high precision make it suitable for battery management systems, where accurate voltage monitoring is crucial for battery health and longevity.

Conclusion of LM385PWR-1-2

The LM385PWR-1-2 is a versatile and high-performance voltage reference that offers a combination of precision, stability, and low power consumption. Its fixed output voltage of 1.235V, low temperature coefficient, and high output current capability make it an ideal choice for a wide range of applications, from precision measurement equipment to power management systems. With its surface-mount package and low noise performance, the LM385PWR-1-2 provides a reliable and efficient solution for modern electronics designs.