AD592AN

Resolution:	--
Base Part Number:	AD592
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-25°C ~ 105°C
Test Condition:	25°C
Accuracy - Highest (Lowest):	±2.5°C
Features:	--
Series:	--
Voltage - Supply:	4 V ~ 30 V
Output Type:	Analog Current
Sensing Temperature - Remote:	--
Sensing Temperature - Local:	-25°C ~ 105°C
Sensor Type:	Analog, Local
Part Status:	Obsolete
Packaging:	Tube

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Temperature Sensors - Analog and Digital OutputTemperature sensors are used to measure environmental temperatures in numerous applications. In this article, we will discuss the application field and working principle of one such temperature sensor, the AD592AN.The AD592AN is a linear analog output temperature transducer. It is a low cost, compact temperature sensor that is suitable for temperature measurement from -55°C to +105°C. Ideal applications of the transducer include industrial, medical, and consumer temperature sensing and control.The AD592AN features a low cost zinc sulfide (ZnS) or GaAs LED reference diode that is used as the sensing element, and a transimpedance amplifier/comparator that is monolithically integrated within the sensor. This combination not only provides an accurately calibrated linear output voltage that is proportional to ambient temperature, but also provides excellent temperature accuracy and stability with drift rates as low as 20ppm/°C. Additionally, temperature measuring capability can be extended to -80°C and +125°C when cost effective external resistors are used.Regarding its physical characteristics, the AD592AN has a unique mechanical design that incorporates an optional hermetic package and an optional integrated heatsink. Additionally, its small size and low power consumption make it ideal for applications requiring space and energy conservation.The working principle of the AD592AN is relatively simple. Temperature is sensed by the LED reference diode, but the diode\'s current output is insulated from the output voltage by the transimpedance amplifier/comparator. The sensor\'s amplifier/comparator acts as a signal conditioner to provide an accurately calibrated output voltage that is proportional to temperature. This output voltage is then fed to an external circuit for temperature measurement and control.In summary, the AD592AN is a low cost, analog output temperature transducer that is suitable for many temperature sensing applications. It features a high accuracy and drift rate, and its unique mechanical design and low power consumption make it ideal for applications requiring space and energy conservation. Furthermore, its simple working principle makes it easy to integrate into any temperature measurement and control system.

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