AD780ARZ

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PMIC owns a wide range of voltage reference products, and the AD780ARZ is one of the popular products due to its superior accuracy and good low temperature stability. This chip is considered a low-noise, pre-trimmed bandgap IC voltage reference which allows the user to have high accuracy, low temperature coefficient and low cost.

The basic block diagram of the AD780ARZ consists of two low-noise bandgap circuits, a large temperature range, a high accuracy trim and output circuitry. The devices include a reference buffer and an amplifier with a 1.2V user-defined offset for the output, making them suitable for applications requiring precision input/output offset and gain control.

The AD780ARZ is an ideal voltage reference for applications such as voltage and current measurement, on-board and battery-powered systems, and digital-to-analog and analog-to-digital converters. Its low drift and high accuracy make it suitable for low-power, low-offset and low-cost precision reference circuits, and its integrated structure makes it suitable for applications requiring multiple reference sources.

As for its working principle, the AD780ARZ uses a combination of two simple integrated bandgap circuits and an IC-controlled adjustable off-chip precision resistor to generate the nominal 1.20V reference. By using a low-noise design, this produces a low-noise reference voltage whose standard deviations are less than 10uVrms and a line regulation of 0.2mV for line inputs up to 10V. Furthermore, the temperature coefficient of the AD780ARZ is typically 0.1% of full-scale range (1.2V) between both ambient temperature and 30 centigrade.

The combination of superior accuracy and low temperature stability makes the AD780ARZ one of the best devices in the AD780 product family. Due to its versatility and superb performance, it finds application in many fields and is widely used for various voltage reference applications in industrial control, telecommunications, automotive, battery-powered systems, and other areas.

In summary, the AD780ARZ voltage reference is one of the most popular PMIC voltage reference products due to its superior accuracy and low-temperature stability. Its wide temperature range, high accuracy trim, and output circuitry makes it suitable for many fields, including voltage and current measurement, on-board and battery-powered systems, and digital-to-analog and analog-to-digital converters, and its working principle integrates two simple integrated bandgap circuits and a precision resistor. Thus, it is ideal for low-power, low-offset, low-cost precision reference circuits.

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