• RE: AD7771 noise in datasheet correct?

    Hi,

    It seems to be correct for both figures. I think the datasheet is now updated.

    Regards,

    Andrei

  • RE: AD7771 SDO Output

    • Has the problem been solved? Just like you, I also use STM32 to read AD7771. The data I read out now is completely wrong。

    • here's my code,Can you give me some guidance?
    • unsigned char ad7771_spi_write_byte(unsigned char TxData)
      {
      unsigned char RxData…

  • RE: AD7771 Crystal

    Hi Vinicius,

    R66-R68 were placed there as a placeholder, just in case a resistor divider, biasing, filtering, etc was by any chance needed in a particular case. If you don´t need any of these, please ignore these three resistors.

    Regards,

    Lluis…

  • 关于AD7771 驱动与数据读写问题

    请问一下关于AD7771的驱动与数据读出问题:

    首先 我先对AD7771的寄存器进行了 初始化  

    EN_CH1[0]=0x113C;
    DeTxBuffer[0]=0x96FF;//
    Tx_SPI_REST[0]=0xFFFF;//??spi??
    Tx_SPI_SLAVER_EN[0]=0x1390;//???spi?????
    TX_DISALBE_write[0]=0x8000;/
    updata[0]=0x6401;
    POWERSAR[0]=0x1540;
    EN_SAR[0]=0x0800;
    en_sar…

  • AD7771读写寄存器问题

    I used STM32L4 to try to drive AD7771 in SPI mode, and tried to read and write its register mode (SPI control mode). Through reading the data manual, I found that the working mode of SPI can only choose mode 3.

    Which SPI module should I choose when reading…

  • AD7771 single supply analog input range

    Hello, friends!

    I'm using AD7771 with an fully differential AMPOP. The ADC would be supplied with 3.3 V, Vref- would be tied to ground and Vcm would provide a bias for the AMPOP. In the ADD7771 analog inputs, there would be something like this:

     

    Being…

  • AD7771 Offset Correction

    Hi

    I am asked about AD7771 data sheet from my customers.
    Please give me the correct answer.

    My customer has read the AD7771 data sheet to learn about offset adjustment.
     
    Rev. A | Page 42 of 99
    An offset adjustment of −150 LSB…OK
    this number…
  • AD7771 EVB Gerbers

    Hi,

    Could you please provide the AD7771 EVB Gerbers/brd for a reference?

    Thanks,

    Noam

  • Using EVAL-AD7771

    Hi,

    I'm new using the EVAL-AD7771 board so I would like to know if you have a tutorial that would help me to get familiar with this board. I would like to be able to process signals from the AD7771 with a microcontroller by using the J1 connector, however…

  • AD7771 power sequence

    Hi,

    1) Is there a required/suggested power sequence for the AD7771?

    2) In order to save power (OPAs ea.) I like to consider shutting down the analog VCC while maintaining the digital VCC (approx. 5% duty-cycle). Is it ok?

    Thanks,

    Noam