ADT7470ARQZ

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The ADT7470ARQZ is a multi-channel, digital temperature monitor and temperature alarm from Analog Devices that combines the traditional digital thermometer function with a wide variety of temperature alarm and temperature range setting for different application fields. It is categorized under PMIC - Thermal Management and is commonly used in embedded and industrial applications.

The device features two temperature monitoring channels, each with a 13-bit resolution measurement range of -55°C to +127°C ±3°C and a pair of temperature limits to generate an interrupt. When the temperature reaches a set limit, the device will provide an active-low open-drain output to indicate that one of the two limit has been exceeded. This interrupt output can be connected to an MCU interrupt pin to notify the MCU that an alarm has been triggered. Additionally, the device also provides a temperature offset register, allowing the user to adjust the temperature level accordingly.

On the power side, the device operates from a wide VDD of 2.7V to 5.5V. It also has a low-power mode which is activated when device is not communicating with the MCU. The devices power consumption is typically 0.4µA in normal mode, and 250nA in low-power mode. It also has a thermal shutdown feature that keeps the device from overheating. The device also includes support for SMBus, I2C, and SPI protocols.

The ADT7470ARQZ is a powerful digital temperature monitor, ideal for embedded and industrial applications where long-term operation stability and security against thermal interruptions is a priority. Thanks to its wide temperature measurement range, adjustable temperature offset and alarm settings, and wide communication interface support, the device is an excellent choice as a thermal management controller in many applications.

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