TMP302ADRLT Sensors, Transducers

Output Function:	/OverTemp
Supplier Device Package:	6-SOT
Package / Case:	SOT-563, SOT-666
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Current - Supply:	8µA
Voltage - Supply:	1.4V ~ 3.6V
Features:	Selectable Trip Point
Selectable Hysteresis:	Yes
Series:	--
Output:	Active Low
Output Type:	Open Drain
Current - Output (Max):	10mA
Accuracy:	±2°C
Switching Temperature:	50°C, 55°C, 60°C, 65°C
Trip Temperature Threshold:	Hot
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction
Temperature Sensors, thermostats, and solid-state devices have found increasing value and use in a variety of applications across many industries in the past few decades. Developments in technology have brought forth greater accuracy, better reliability, and higher safety standards for these components. One such component, the TMP302ADRLT, provides accurate monitoring measurements in consumer and industrial applications. In this paper, we will cover the applications field of the TMP302ADRLT and explore its working principle.Application Field of TMP302ADRLT
The TMP302ADRLT is a two-channel, precision temperature monitor designed for voltage-output applications. This device is suitable for use in both industrial and consumer applications, such as industrial process control, data center cooling, home and office security, and commercial HVAC.The TMP302ADRLT is stable to 0.5°C over -40°C to +85°C temperature range and capable of accuracy of 2°C or 0.5°C depending on range (±10°C or ±5°C, respectively). This precision temperature sensor features high pass line-noise filter, programmable shutoff and polarity time delay, as well as a very low power consumption, which helps to improve system efficiency.Working Principle of TMP302ADRLT
The TMP302ADRLT uses an analog-output circuit that is based on a voltage, RTD and thermistor network and a precision ∆Σ ADC that operates between −40°C and +85°C. The device also contains a temperature-to-digital converter, a status register that keeps track of temperature readings, and a proportional-integral-derivative controller (PID) for temperature regulation purposes.The main advantage of this design is that it eliminates the need for multiple components while maintaining accuracy. This reduces system complexity and cost. The voltage signal generated by the RTD and thermistor network is then converted to digital data using the ∆Σ ADC. The digital data is then sent to the status register, which is used to track readings over time. Finally, the PID circuit is used to compare the actual temperature reading to the desired set point and adjust the sensor’s output accordingly.Conclusion
The TMP302ADRLT is a precision temperature sensor that is suitable for use in various consumer and industrial applications. Its accuracy and low power consumption make it a viable option for a variety of applications. The device uses an analog-output circuit based on a voltage, RTD, and thermistor network and a precision ∆Σ ADC to convert temperature readings to digital form. Finally, the device uses a PID circuit for temperature regulation purposes.

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