ADM8697ARU

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Application field and working principle of ADM8697ARU (PMIC / Supervisors)

The ADM8697ARU from Analog Devices is a Zero-Base sequential logic supervisor. This device has numerous applications including use in power management and systems that require real-time monitoring of power on and power off sequences for safety. The device supports industrial, medical and other embedded applications.

The ADM8697ARU is a Zero-Base sequential logic supervisor. It offers the system designer an integrated circuit solution that monitors up to 6 power rails. The rail sequencing, sequencing duration and power sequencing accuracy are all controllable by setting external resistors or adjusting other logic levels. The device also provides under-voltage monitoring and over-temperature protection, thereby making it an ideal component for embedded system design. This device also allows the system designer to program the inrush current setting and to monitor the current status of each rail in order to detect faults in the system.

The ADM8697ARU employs start up or shut down ordering between two or more power rails that are part of a system. The device first confirms that no erroneous power on or power off states exist, then decides whether it is safe to turn on or off a particular rail based on its current status. The on/off ordering itself is within the sequential logic architecture of the device, and can be easily configured using the available logic levels. This provides the system designer with a great degree of control over the sequence in which the rails are enabled, ensuring that the power-on and off sequences occur safely and with optimal precision.

The ADM8697ARU supports a wide operating temperature range from -40°C to +85°C. It also has low quiescent current of only 4.2mA, which eliminates the need for a separate power supply for the device. The device also features a 2% accurate voltage monitor with a typical tolerance of 1.0V. Additionally, the pin availability allows for low-voltage and high-voltage monitoring of each of the six power rails.

The ADM8697ARU has many features that make it a very desirable component to use in embedded designs. The adjustable power sequencing and monitoring of up to six power rails make it an ideal component for power management, while the robust and wide temperature range ensure reliable operation in extreme conditions. The device also provides start-up and shut down ordering, ensuring a safe and reliable power-on and off sequence. Finally, the low quiescent current and integrated voltage monitor make this device an attractive alternative for embedded systems.

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