ADM708AR

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The ADM708AR Supervisory IC, released by Analog Devices, is a high-performance CMOS integrated circuit designed for mobile and desktop application. The chip is designed to supervise the power supply rail, regulate the voltage level and its derivative, as well as provide protection against overcurrent conditions. The ADM708AR is a type of power supply supervisory that can be used for various applications in mobile and desktop electronic systems.

Application Field

The ADM708AR can be used for various applications in smartphones, tablets, and computers. It is used as a supervisor to monitor the power supply levels in the system, providing protection against over-current, under-voltage, and over-voltage conditions. It can also be used to reset the system when certain voltages are exceeded. This can be used to indicate when the system has experienced a fault and needs to be reset.

The ADM708AR can also be used to monitor battery charge levels in mobile devices. The built-in comparator circuit can monitor the battery\'s voltage level and reset the system when it exceeds certain limits. This can be used to prevent system failure due to overcharging or low volts. The chip can also be used to turn on/off certain power rails depending on specific conditions, helping to optimize system power consumption.

In addition, the ADM708AR can be used to protect external devices from over-current or under-voltage conditions. The built-in watchdog timer can be used to reset the system if it does not receive input signals for a set period of time, helping to prevent system crashes due to external devices not responding. The chip can also be used to measure the power supply levels in high-precision systems and generate an on-chip or external interrupt when the input voltage is outside of a designated range.

Working Principle

The main objective of the ADM708AR is to supervise the power supply and protect the system from overcurrent and undervoltage faults. The ADM708AR contains a voltage regulator, an on-chip comparator, and a watchdog timer. When the input voltage is within the specified limit, the voltage regulator ensures that a stable and consistent voltage is supplied to the system.

The built-in comparator compares the voltage level with an internal reference and provides an output signal if it exceeds preset levels. The chip also provides an interrupt signal when the voltage level is out of range. This can be used to preemptively reset the system or provide an indication of an impending power supply fault.

The chip also contains a watchdog timer that can be used to reset the system if the system does not receive a signal from an external source for a set period of time. This helps prevent the system from crashing if an external device fails to respond. Finally, the chip provides protection against over-current and under-voltage conditions, helping to prevent system damage due to incorrect power supply levels.

In summary, the ADM708AR Supervisory IC is an efficient and accurate power supply supervisory IC designed for mobile and desktop applications. The chip provides protection against overcurrent and undervoltage conditions and can reset the system if the input voltage is outside of the specified range. The built-in watchdog timer can be used to reset the system if it does not receive input signals for a set period of time, helping to prevent system crashes due to external devices not responding. The ADM708AR is a highly efficient and reliable supervisory IC for mobile and desktops.

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