• RE: ESD Protection AD7747

    Hi

    Regarding to the ESD protection for AD7747, I'm wondering if possible to use same ESD and EMI protection circuits which was illustrated on fig.48 and 49 of AD7150 datasheet?

    Using ultra low capacitance ESD protection diode  (<1pF) might be help…

  • 关于AD7747使用问题

    对于AD7747,请问在单端模式下,被测电容的一块极板接AD7747的CIN1(+),另一块极板需要接到AD7747的GND吗,还是可以不接?谢谢!

  • AD7747 Differential Mode

    Hey,

     

    I want to detect objects between two closing doors with the AD7747.

    The Sensor consists of two pair of electrodes, which are one after the other. One pair of electrodes will sit on the top closing area and the other pair on the bottom closing…

  • AD7747 Differential Mode

    Hey,

    I want to detect objects between two closing doors with the AD7747.

    The Sensor consists of two pair of electrodes, which are one after the other. One pair of electrodes will sit on the top closing area and the other pair on the bottom closing area…

  • AD7747 capacitance issue

    Hello,

    I'm using an AD7747 with a 25 pF cylindrical capacitor for fuel level sensing.

    My problem is, when left the IC to run for some hours, the capacitance read drift massively, about 3/5 the the scale range, so it's impossible for me to sense fuel…

  • AD7747 minimum I2C Frequency

    I've been working with the AD7747 CAPDAC interfacing with a board design of my own and have been very satisfied.  I'm evaluating using a very low I2C frequency and have found that the AD7747 quits talking if the frequency is lower than about 54kHz…

  • Electrodes AD7747

    Hey,

    Is it possible to use only one conducting electrode and the grounded human body (finger, etc.) as the other electrode for the sensor?

    Thank you very much for your help!!

    Regards!

  • Queries about AD7747

    Dear Supporter,

    I am using AD7747 in my design. Here are some queries that need your help. I am a rookie in CDC product...

    1, in my design, CIN+ is the input and CIN- is floating. In the datasheet, it is said that the range is +/-8.192pF. But in my…

  • AD7747 - C2D converter - Issue

    Hi everybody, 

    I want to do a level sensor for my own by using: 

    - copper strips on a thin plastic glass

    - AD7747 

    - Arduino UNO

    The issue is that I am not really familiar with I²C communication since it is the first time I work with that. Therefore…

  • working of AD7747

    Hello,

    I am working with IC AD7747 to measure the capacitance in pf range. How does this work especially 24 bit sigms delta generator and CAPDAC part ?

    What is the internal circuit diagram of this IC?

    Thank you.