• AD9650 BIST pattern

    Hello, 

    I'm tasked with implementing a FPGA side ( or top level software side ) BIST checker to verify the AD9650 data interface.

    The datasheet register map test mode register (0x0D) specifies a BIST PN short sequence and PN long sequence. What polynomials…

  • RE: AD9650 LVDS Output

      You state the outputs will be okay if shorted to ground. Similarly, if the outputs are accidently connected to an FPGA configured as 1.8V output and drive high while ADC drives low or drives low while ADC drives high, will I/O be okay…

  • AD9650 Analog Input S-Parameter Data

    Hi dear Analog!                 

    For better input matching, I need the S parameter of the analog input of ad9650 ,can you help me?     

  • Noise floor of AD9650

    Dear Sir or Madam

    The data captured by ad9650 , shows the noise floor is higher than in the datasheet ,in my application .

    The test results are here ,the  sample frequency is 80MHz ,

    As this shows , the Noise is getting 105DBFS,  while in the datasheet…

  • AD9650 PSR

    Dear Sir or Madam 

    I'm writing to ask for some help because I couldn't find the power supply rejection specification  from the datasheet of AD9650.

    https://www.analog.com/media/en/technical-documentation/data-sheets/AD9650.pdf

    Thereby , I  come here…

  • Differential Input Configurations For AD9650

    Dear Sir or Madam

    As I found in the datasheet page31 of AD9650 , it mentioned "For baseband applications, AD8138, ADA4937-2, and ADA4938-2 differential drivers provide excellent performance and a flexible interface to the ADC."

    Does it mean…

  • ADA4350 drive AD9650

    I'm using the ADA4350 to drive the AD9650. The front-end circuit of AD9650 is shown below. The sample rate is 20MHz.

      

    When I input a 100KHz sine wave to the ADA4350, The sample data is a stepped sine waves when ploted.

    I have another PCB of AD9650…

  • ADA4350 drive AD9650

    I'm using the ADA4350 to drive the AD9650. The front-end circuit of AD9650 is shown below. The sample rate is 20MHz.

    When I input a 100KHz sine wave to the ADA4350, The sample data is a stepped sine waves when ploted.

    I have another PCB of AD9650…

  • AD9117 & AD9650 with one 3-wire SPI

    Hi,

    I plan to use two DAC AD9117 and two ADC AD9650, connected to FPGA in my design. I am currently working on a SPI configuration connection scheme for that setup, and I come up with the question: can I connect two DAC and two ADC with one 3-wire SPI…

  • A wave was added to the power rail AVCC_1P8V of AD9650

    Dear Sir or Madam

    I am writing for help for a question that I found there was a wave had been added to the analog power supply of AD9650 , which is about 80MHz ,the same with the sampling frequency .

    Here is  the picture.

    Above is the picture I measured…