ADR4525ARZ

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ADR4525ARZ Application Field and Working Principle

ADR4525ARZ is an adjustable shunt voltage reference that belongs to a family of power management integrated circuitry (PMIC). It is used to provide an accurate voltage reference for voltage regulation. As a component of PMIC, this voltage reference can decrease power losses, improve power efficiency, and extend battery life.

ADR4525ARZ features a wide operating temperature range and a low operating current. It is available in a small, low profiled Quad Flat Package that can be easily mounted onto a printed circuit board, making it ideal for a wide variety of applications. The device operates over a wide input range of 2.5V to 18V and is capable of delivering a precisely regulated output voltage of 0.5V to 5V. It is thus suitable for multiple applications, such as portable electronics, automotive, industrial, as well as general electronics.

The working principle of the ADR4525ARZ is based on an operational amplifier. The operational amplifier amplifies the difference between the input voltage and the reference voltage to obtain the desired output voltage. The output voltage is regulated by the reference voltage, which is determined by the output voltage of the connected external voltage divider circuit. The voltage divider circuit includes two resistors that are connected in series to the input source. The junction between the two resistors is connected to the inverting input of the operational amplifier. The output voltage level of the voltage divider circuit will be used as a reference for the operational amplifier.

In addition to providing precise voltage reference, the ADR4525ARZ also offers excellent temperature stability and accuracy. It features an 0.2% maximum peak-to-peak temperature drift in the output voltage over the operating temperature range. On-chip trimming of the output voltage with ±5mV accuracy is also possible over the full temperature range. The device also ensures a high common-mode rejection ratio (CMRR) of 90dB to reduce noise in signal applications.

In sum, the ADR4525ARZ is an adjustable shunt voltage reference that is suitable for use in a wide variety of applications. It offers precise voltage reference, low operating current, wide operating temperature range, high CMRR, and excellent temperature stability and accuracy. It is thus an ideal PMIC component for voltage regulation.

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