AD2702SD

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AD2702SD is a voltage reference device manufactured by Analog Devices which is specifically designed to provide stable, accurate and temperature-compensated voltage reference. Because of its wide variety of features, the AD2702SD has applications in a number of areas. In this article, we will discuss the most notable applications and the working principle of the device.

PMIC - Voltage Reference Applications

AD2702SD is a great option for a variety of applications in the PMIC - voltage reference field. A notable application of this device is to provide reference voltage in analog to digital converters (ADC) or digital to analog converters (DAC). The output of the device has low temperature drift which means it can maintain an accurate voltage when temperatures change. The device can also be used for driving light-emitting diodes (LED) to provide stable brightness. Furthermore, the AD2702SD can be used in applications such as power supply and consumer electronics temperature compensation.

Working Principle

The working of the AD2702SD is based on a dynamic three terminal bandgap reference and reference output stage topology. This topology provides a variety of features such as low overdrive voltage, low offset voltage, low temperature drift and high stability. The device is capable of providing a fixed reference voltage of 2.5V with a temperature coefficient of 5 ppm/°C. The reference output stage is designed to provide a low output impedance, which means the device is able to maintain accurate voltage even when subject to small load currents.

In addition, the AD2702SD effectively compensates for temperature fluctuations. This is achieved by utilizing a specially designed temperature sensor which changes its internal resistance with changing temperature. This change in resistance is used to adjust the reference voltage and maintain the accuracy of the fixed reference voltage.

Conclusion

The AD2702SD is a voltage reference device which has a number of applications in the PMIC - voltage reference field. It can be used in ADC and DAC applications, as well as in LED driving and temperature compensation. Its working is based on a dynamic three terminal bandgap reference topology which provides features such as low temperature drift, low offset voltage and high stability. This helps the device to maintain accurate voltage even with small load currents and to provide temperature compensation.

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