LM285DG4-2-5

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LM285DG4-2-5 is a voltage reference in the industry-leading power management integrated circuit (PMIC) series from Texas Instruments. This device is designed for use in a variety of applications including precision measurement and control. It is capable of providing both accurate and stable voltages that can be used for various operations. The LM285DG4-2-5 voltage reference is available in a small 8-Pin SOIC package, making it ideal for space-constrained applications.

The LM285DG4-2-5 offers a wide operating voltage range of -2.2V to 5.5V, making it suitable for a variety of applications. It also features a fast settling time of 20µs (max) and low input bias current of 300nA. Additionally, this voltage reference offers a temperature range of -40°C to 85°C, making it suitable for use in a variety of environments.

The LM285DG4-2-5 voltage reference is designed to provide a stable and accurate voltage output regardless of the device’s operating temperature or load conditions. This is accomplished using a combination of bandgap circuit topologies, allowing for a minimum error of 0.2%. The device also features a high power supply rejection ratio (PSRR) of 75dB at 1kHz, ensuring that the output voltage remains constant regardless of fluctuations in the power supply voltage.

The working principle of the LM285DG4-2-5 voltage reference is based on two distinct stages. The first stage is a bandgap topology that maintains a constant output voltage independent of the input voltage variations. This is accomplished by using the temperature dependent thermal voltage of a bipolar junction transistor (BJT) and the temperature-independent current generated by a transconductance amplifier. The second stage is a voltage or current amplifier that is used to further reduce the output voltage or current error.

The LM285DG4-2-5 is ideal for precision measurement and control applications. It can also be used in a variety of other applications including power conservation, system-level impedance adjustment, and many more. This voltage reference provides an excellent combination of accuracy, stability, and features, making it an excellent choice for use in a variety of power management applications.

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