Temperature Sensor with Digital Output


Posted on Dec 16, 2012

This is a very simple to implement Temperature Sensor. It uses LM35DT as a semiconductor temperature sensor which operates with a +5 volt DC. It produces an analog output voltage, proportional to the change in surrounding temperature in Celsius scale (2mv/C). The analog output of the sensor is then passed to the ADC0804 IC which produces an 8-bit binary output (digital output) correspoding to the analog input voltage.


Temperature Sensor with Digital Output
Click here to download the full size of the above Circuit.

The digital output from ADC is then used to glow the LED which indicates the high/low logic (LED ON: Logic 0, LED OFF: Logic 1). The output of the ADC can be interfaced to a 7-segment diaply using a 7-segment driver or the digital output can be interfa




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