Analog Devices Digital temperature sensor AD7416

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There are many situations when you might need to measure temperatures or trigger some events due to temperature changes. It is very convenient to have these values in a digital format. Then you can transfer digital values to the microcontroller to process data or just to display on the LCD screen.

AD7416 Sensor description

This is a 10-bit digital temperature sensor that can measure temperatures in the range interval -40 to 125ï‚°C). Temperature conversion ADC has 15 conversion times. The sensor can be supplied from 2.7 to 5.5V, so it is no problem to connect directly to ARM microcontrollers. Data is transferred through the I2C serial interface.

The more detailed description and datasheet can be downloaded from Analog devices page: AD7416. Here you find a simple routine where the Atmega8 microcontroller reads sensor data decodes temperature value and displays it on a 2×16 LCD display.

Let’s connect everything to a simple circuit. Don’t forget to connect pull-Ups to SCl and SDA busses:

Here are few real images of prototyping:

That’s it. If you would like to try to run this sensor on your own, here is the source code of the CodeVision compiler. And already compiled hex in the archive. Also, I added the Eagle library with the AD7416 part in it. Project files: AD7416

12 Comments:

  1. jochez
    December 8, 2006 at 22:41

    It’s not possible to download AD7416.zip

  2. scienceprog
    December 9, 2006 at 11:43

    Try now. I have fixed the link.
    Thanks for notice.

  3. jochez
    December 9, 2006 at 12:45

    Thanks for the fixed link!!!
    I hope this will help me in my work…

  4. Rand
    February 4, 2007 at 05:54

    Hi, where can I find the download link for your code?

  5. scienceprog
    February 4, 2007 at 12:47

    The code is at the end of article.

  6. hackers
    April 10, 2007 at 12:19

    this code is useless

  7. Mahesh Kumar
    August 7, 2007 at 14:58

    Hi

    my stdio.h file is not supporting “Sprintf”
    its showing Undefined command
    i had even included STDIO.H in the program
    i am using codevision
    can you fix it

  8. scienceprog
    August 7, 2007 at 15:39

    It’s been long time I havn’t used codevision. Now I am sticked to WinAVR. This is very old code which is pretty messy so I am thinking on rewriting it for WinAVR.

  9. oliver
    October 15, 2009 at 17:32

    Good day!!!

    may asked???
    you have also a IC circuit of 7453,7472,74105,74193..,
    7470,741000,74126,74163,74284?…..
    pls…send my email.. orlie_001@yahoo.com……
    that is my project….pls…send immediately….

    thanks…

  10. jawwad
    April 27, 2010 at 18:48

    HI EVERY ONE
    GOOD DAY||||||
    CAN ANY BODY TELL ME WHAT IS 20n IS THIS CRYSTAL????

    PLZ HELP ME AS SOON AS POSSIBLE
    MY EMAIL IS jawwad123456@hotmail.com

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