LM399H

The LM399H is a precision voltage reference device known for its high stability and low drift characteristics, commonly used in applications requiring precise voltage regulation. It features a buried Zener diode and a temperature-stabilized reference, which contribute to its exceptional performance in terms of temperature coefficient and long-term stability. The LM399H provides a nominal output voltage of 7.0 volts and is designed to be used in a wide range of temperature conditions, typically from -55°C to +125°C.
Encapsulated in a hermetically sealed TO-46 metal can package, the LM399H is particularly suitable for environments that require robust protection against moisture and contaminants. Its low noise and excellent line regulation make it ideal for use in data acquisition systems, precision multimeters, and high-precision instrumentation. The device requires an external resistor to set the current, allowing for flexibility in various circuit designs. It is often chosen for applications where high accuracy and reliability are paramount, providing a stable voltage reference that maintains performance over time.

The LM399H is a precision voltage reference known for its high stability and low temperature drift. Key features include:
1. Precision Reference: It provides a stable reference voltage, typically 7.0V, with high precision.
2. Low Temperature Coefficient: Exhibits a low temperature coefficient, often around 1 ppm/°C, making it suitable for applications requiring high accuracy over a wide temperature range.
3. Low Noise: Designed to have low noise output, enhancing its suitability for precision measurement systems.
4. Hermetic Package: The "H" in LM399H indicates a hermetically sealed package, which enhances reliability and performance by protecting against environmental factors.
5. Internal Heater: Includes a built-in heater to maintain the die at a constant temperature, reducing voltage drift due to ambient temperature changes.
6. High Stability: Offers long-term stability, making it ideal for critical applications like calibration equipment and high-precision data acquisition systems.
7. Wide Operating Temperature Range: Functions effectively over a wide temperature range, typically from -55°C to +125°C.
These features make the LM399H suitable for use in high-precision applications such as test equipment, instrumentation, and other scenarios requiring a reliable voltage reference.

The LM399H is a precision voltage reference packaged in a TO-46 metal can. This package type is known for its durability and ability to provide excellent thermal performance, which aids in the precision and stability of the voltage reference.

The LM399H is a precision voltage reference known for its stability and accuracy. It is housed in a TO-46 metal can package and typically has an 8-pin configuration. However, only 5 pins are used. Here's the pin function:
1. Pin 1 (Output): Provides the precision voltage reference output, typically 7.0V.
2. Pin 2 (GND): Ground connection.
3. Pin 3 (N/C): No connection.
4. Pin 4 (N/C): No connection.
5. Pin 5 (N/C): No connection.
6. Pin 6 (N/C): No connection.
7. Pin 7 (N/C): No connection.
8. Pin 8 (V+): Positive supply voltage, typically between 12V to 15V.
The LM399H uses a buried Zener diode for voltage regulation, offering low temperature drift and excellent long-term stability, making it suitable for precise applications like calibration and test equipment.

The LM399H is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company provides a wide range of products that are used in various applications, including signal processing, power management, data conversion, and more. Analog Devices is known for its high-performance components used in industries such as automotive, communications, industrial, healthcare, and consumer electronics.

The LM399H is a precision voltage reference used in applications requiring high stability and accuracy. Its low temperature coefficient and low noise characteristics make it ideal for use in precision analog-to-digital converters (ADCs), digital-to-analog converters (DACs), and calibration equipment. It's also employed in instrumentation, test and measurement devices, and high-precision power supply regulation. The hermetically sealed package of the LM399H ensures reliability in harsh environments, making it suitable for aerospace and military applications.

The LM399H is a precision voltage reference. Equivalent products include the LTZ1000 from Analog Devices, the ADR1399, and the REF102 from Texas Instruments. While these alternatives may have similar functionalities, always verify the specifications to ensure they meet your application's requirements.