ADM698AR

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Introduction
The ADM698AR is a microcontroller supervisory chip developed by Analog Devices, Inc. Its purpose is to provide a low-power monitoring solution for use in electronic systems. The primary feature of the ADM698AR is its ability to monitor system reset and power-on status in real time, as well as providing system-level protection against undervoltage and overvoltage conditions. This chip can be used for a variety of applications, such as industrial control systems and general-purpose embedded systems.

Application Field
The ADM698AR is a versatile Microcontroller Supervisory chip that can be used in a variety of embedded electronics, including industrial control systems, general-purpose embedded systems, and automotive applications. It is especially valuable in systems where power supply reliability and monitoring are critical. For example, its power-on reset and brownout detection capabilities make it well suited for use in microcontroller-based systems, where it can provide accurate power monitoring and system protection. Additionally, its wide range of voltage sensing capability and threshold settings make it suitable for use in systems with a variety of input voltage ranges, from as low as 5V to as high as 60V.

In industrial control systems, the ADM698AR can be used to monitor the power supply and provide protection against undervoltage and overvoltage conditions. It can monitor multiple supplies and provide an accurate reset signal in the event of a power failure. Additionally, it can provide external users with an accurate system status regarding power supply conditions, which can be used to further manage the system.

The ADM698AR is also used in automotive systems, where it can help protect the battery from overcharging and undercharging, as well as provide accurate voltage measurements. It can also be used to monitor the electrical system of the vehicle, providing insight into its health. Additionally, it can detect and respond to changes in the voltage levels with its programmable reset assertion threshold.

Working Principle
The working principle of the ADM698AR is simple and straightforward. It monitors the system voltage and compares it with a predetermined voltage range. When the monitored voltage falls outside the range, either due to a power failure or an overvoltage condition, the chip generates a reset or power-on signal. This signal can be used to initiate a system reset to ensure reliable operation or to trigger an external device, such as a relay or solenoid, in the event of an overvoltage or undervoltage condition.

The chip also provides numerous programmable features, such as the ability to set up thresholds for reset assertion, input hysteresis, and voltages to be monitored. Additionally, the ADM698AR supports both active high and active low reset signals and can be configured as a reset-only device or as a reset and power-on switch. The chip has a built-in watchdog timer to guard against system lockups, allowing for smooth operation.

The ADM698AR is also designed for easy integration into existing systems. It has a wide operating temperature range and is able to work in the background, with minimal power consumption. Furthermore, its low-profile design allows for easy placement on a PCB and makes it ideal for use in space-constrained applications.

Conclusion
The ADM698AR is a versatile microcontroller supervisory chip developed by Analog Devices, Inc. Its primary feature is its ability to provide real-time monitoring of system reset and power-on status, as well as protecting against undervoltage and overvoltage conditions. It can be used in a variety of embedded systems and applications, including industrial control systems and automotive applications. Its simple and straightforward working principle, and programmable features, make it a valuable solution for these applications.

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