LM4041DEM3X-ADJ/NOPB

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Voltage references are devices that provide a predetermined output voltage, regardless of changes in the load current or circuit conditions. LM4041DEM3X-ADJ/NOPB is one type of voltage reference, which is mainly used for battery-powered systems that require long hold times, low quiescent current, and tight reference voltage accuracy. This article will introduce the application fields and working principles of LM4041DEM3X-ADJ/NOPB.

Application Fields

LM4041DEM3X-ADJ/NOPB can provide a well-regulated of 0.8 V to 15 V with low operating current of only 120µA. This device is ideal for use in battery-powered systems as it has a low quiescent current of 1µA and operates within a wide range of temperatures from -40°C to 125°C. Also, LM4041DEM3X-ADJ/NOPB draws very little current over its full supply range, thus allowing higher battery life in the system. It is additionally designed to operate with low EMI noise, making it suitable for RF applications.

Another application field for LM4041DEM3X-ADJ/NOPB is high-temperature systems. The device has an extreme operating temperature of -40°C to 125°C as opposed to the standard devices with limited operating temperatures of approximately 70°C, giving it the capability for long hold times in extreme environments.

In addition, LM4041DEM3X-ADJ/NOPB feature high accuracy in the reference voltage. With its pin-adjustable voltage of 0.8 V to 15 V and a ±3% accuracy over the extended temperature range, this device is capable of providing consistent and reliable results over long periods of time.

Working Principle

The working principle of LM4041DEM3X-ADJ/NOPB is based on the Zener diode. The Zener diode is a voltage regulator and reverse-biased semiconductor diode that allows a predetermined current and voltage to pass through it. LM4041DEM3X-ADJ/NOPB contains a break-before-make switch, which is used to adjust the reference voltage. The switch can be adjusted to change the reference voltage from 0.8 V to 15 V. The Zener diode then operates in either forward bias or even reverse bias, depending on the circuit conduction path.

The Zener diode is connected in parallel to a resistor to adjust the reference voltage. When the circuit\'s power supply is turned on, the resistor creates a voltage drop, which is then applied to the Zener diode. The Zener diode then acts as a voltage reference, and the adjusted reference voltage is compared to the output voltage. The circuit automatically regulates itself to provide a constant reference voltage.

In conclusion, LM4041DEM3X-ADJ/NOPB is a voltage reference that is mainly used for battery-powered systems. It has a wide operating temperature range, low operating current and quiescent current, and high accuracy in reference voltage. Furthermore, its operating principle is based on the Zener diode connected in parallel with a resistor, which allows for the automatic regulation of the reference voltage.

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