ADT7318ARQZ

Resolution:	8 b
Base Part Number:	ADT7318
Supplier Device Package:	16-QSOP
Package / Case:	16-SSOP (0.154", 3.90mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 120°C
Test Condition:	0°C ~ 85°C (-40°C ~ 120°C)
Accuracy - Highest (Lowest):	±3°C (±5°C)
Features:	Shutdown Mode, Standby Mode
Series:	--
Voltage - Supply:	2.7 V ~ 5.25 V
Output Type:	I²C/SMBus, SPI
Sensing Temperature - Remote:	-40°C ~ 120°C
Sensing Temperature - Local:	-40°C ~ 120°C
Sensor Type:	Digital, Local/Remote
Part Status:	Obsolete
Packaging:	Tube

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Introduction

Temperature sensors are devices that measure and record changes in temperature in a specific environment or area. Sensors can be either analog or digital, and the choice of which type of device to use depends on the application. In many temperature sensing applications, such as medical tests, process control and remote sensing, the choice of the sensor is important because it affects the overall accuracy of the system. The ADT7318ARQZ temperature sensor is an important example of a device that provides both analog and digital output capabilities.

ADT7318ARQZ Application Field and Working Principle

The ADT7318ARQZ is a high-accuracy, low-power, digital output temperature sensor. It provides two types of temperature information- digital temperature data (bits) and a temperature range (Celsius or Fahrenheit). It is well-suited for use in various temperature sensing applications, including medical instrumentation, laboratory testing, and environmental monitoring.The ADT7318ARQZ device measures the temperature by converting the thermistor output (the change in resistance of a small piece of conductive material when exposed to heat) into a corresponding digital code. This code is then processed in the form of measuring the frequency of the thermistor output. The thermistor output is then converted to a voltage that accurately reflects the resistance across the thermistor element. This voltage is used to determine the temperature.The temperature range can be set by selecting a temperature range from a range of CMOS switches. The output format is adjustable in the range of 9-bit to 16-bit resolution, with integral temperature compensation. The device has a low-power consumption, a wide temperature range (-20°C to +120°C) and a minimum temperature accuracy of ±0.5°C.The ADT7318ARQZ also provides over-temperature alerting and thermal shutoff, utilizing an internal digital signal processor. It features a shutdown feature and a sleep mode. This enables the ADT7318ARQZ to wake up in sleep mode after a certain defined temperature threshold has been reached, and to alert the user via the small LED indicator on the device itself or via an external interface (e.g. for remote monitoring).

Conclusion

The ADT7318ARQZ is a versatile, high accuracy, digital output temperature sensor that is suitable for use in a variety of temperature sensing applications. With its adjustable resolution and integrated digital signal processor, it is a reliable and accurate device for temperature measurement and monitoring. It offers a low power consumption, a wide temperature range, and over-temperature alerting and thermal shutoff. It is also adjustable in a range of 9-bit to 16-bit resolution, which makes it ideal for use in high accuracy sensing applications.

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