LM385PW-1-2

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Voltage reference devices are integrated circuits that produce an accurate and stable reference voltage when connected to a DC power supply. They are widely used in a variety of applications such as data acquisition systems, instrumentation, digital control systems, and motor control. In such applications, a stable and repeatable output is required for proper circuit operation. Voltage reference devices have been designed to meet these needs, providing reliable and constant voltage reference values even when the power supply varies or external conditions change.

LM385PW-1-2 is a commonly used voltage reference device. It combines precision voltage reference and basic voltage regulator elements in a single integrated circuit. The LM385PW-1-2 offers the user a wide range of features and a precision voltage reference source. It is available in a variety of packages, ranging from tiny surface mount formats to through-hole designs, making it suitable for different applications. The device features an adjustable output, low power consumption, and low temperature drift. It is ideal for applications requiring an accurate and stable reference voltage.

LM385PW-1-2\'s application field include precision voltage sensing and system calibration, design of power management systems, and level and rise time control circuits. It can also be used for offsetting digital control loops, precision voltage monitoring and control, and analog and digital scaling techniques. Additionally, the device can be used to convert analog signals to digital signals and to calibrate digital logic levels.

At the heart of the LM385PW-1-2 is a precision voltage reference core which allows it to provide a consistently accurate reference voltage. It has an adjustable output current of up to 100mA, allowing for easy adjustment of the output voltage to any desired level. The device also has an adjustable rise and fall time, allowing for precise control of the voltage transitions. Finally, the device has an excellent temperature stability, with a thermal drift of only 0.1mV/°C.

In order to understand how LM385PW-1-2 works, it\'s essential to look at the basic structure and components of the device. LM385PW-1-2 consists of two bipolar transistors connected in series. The first transistor serves as a voltage reference while the second transistor provides constant current required by the reference voltage. The voltage reference transistor has a collector-base voltage of 1.248 V, while the constant current transistor has a collector-base voltage of 5 V. The voltage across the reference transistor drives the constant current transistor, which in turn supplies the reference voltage.

Along with its internal components, LM385PW-1-2 also provides external connections for battery and AC power supply voltage, power down control, and temperature compensation circuit. The device also has several protection circuits, including over-temperature, reverse voltage, and over-voltage. All these protection circuits help to ensure the device\'s durability and stability.

In summary, LM385PW-1-2 is a highly versatile, stable and reliable voltage reference device, offering excellent accuracy and temperature stability. It is suitable for a wide range of applications and is available in several package sizes. It features an adjustable output, low power consumption, and low temperature drift, making it an ideal solution for precision voltage sensing and system calibration, power management design, and level and rise time control.

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