LM335AM

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Temperature Sensors – Analog and Digital Output have many applications in many industrial and domestic settings. One type of temperature sensor is the LM335AM, which is an analogue output device that uses the thermistor to measure temperature. This article will discuss the application field and working principle of this temperature sensor.

The LM335AM is a three pin temperature sensor that is capable of providing accurate temperature readings within the range of -55°C to +150°C. Its most popular application is within environmental monitoring of both air and liquid temperature. The device is typically used where there is a need for a monitor that can accurately measure temperature in very small changes of up to 0.1°C. It can also be used in applications where there is a need to measure temperature over a wide range for including industrial processes and research applications.

The LM335AM is a thermistor device that contains a temperature sensitive resistor called a Thermally Compensated Silicon Diode (TCSD). It is a three pin device that consists of two terminals for supplying power and one output terminal. The TCSD, when exposed to temperature, changes its resistance based on temperature fluctuations and the change in resistance provides a voltage output value, which is proportional to the temperature changes.

The output voltage signal of an LM335AM device is either linear or a logarithmic response depending on the type of thermistor used in the device. The linear response is more common and provides a very accurate voltage output at temperatures measured.

In applications where the device is used in a digital format, the output voltage is first converted to a digital value and then read using data acquisition tools. This type of temperature monitoring requires the LM335AM to be integrated with an analog to digital converter (ADC). The LM335AM is often used in automotive applications where it is necessary to monitor and control different temperature radiators in an engine.

The LM335AM is a very small and cost effective temperature sensor and it also has the advantage of being very easy to replace compared to integrated circuits devices. It is available in a variety of dimensions and operating voltages. It is a reliable device with a good output response. This device can be used with both an analog or digital format and it is well suited to high temperature applications.

The LM335AM is an ideal temperature sensor for many applications, particularly those that require precise monitoring of temperatures. Its TCSD enables it to measure very small changes in temperature and its capability of providing an output voltage proportional to the temperature, coupled with its easy to integrate with an ADC makes it an attractive choice for a wide range of applications.

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