• AD5755: FAQ

    FAQ

  • AD5755: Thermal resistance value of AD5755

    Q 

    What is the value of thermal resistance theta JC(Junction-to-Case).
    Theta JA(Junction-to-Ambient) is shown at the data sheet. But theta JC is not
    there.

     

    A 

    For the 64 LFCSP 9x9x0.85mm package, I see a number of ~0.2°C/W for Psi Jt.
    This is…

  • AD5755 fastest synchronous DAC channel update using LDAC

    Currently I'm running the AD5755 with nLDAC constantly tied to ground that leads to a single DAC channel update on rising edge of nSYNC with a minimum delay of 5 microseconds between two SPI transfers for DAC channel update (data sheet page 9, t19, digital…

  • AD5755 fastest synchronous DAC channel update using LDAC

    Currently I'm running the AD5755 with nLDAC constantly tied to ground that leads to a single DAC channel update on rising edge of nSYNC with a minimum delay of 5 microseconds between two SPI transfers for DAC channel update (data sheet page 9, t19, digital…

  • AD5755 Output Voltage Ranges 12V

    Thanks for answering my question.

    I want to set the AD5755 output voltage range to 0~12V.

    In AD5755 datasheet, 12V looks like a preset output range.

    So, is there a special DAC Control Register(R2, R1, R0) setting, can I set the AD5755 output voltage range…

  • Setting up the AD5755

    Thsi Video clip shows how to setup and use the AD5755, Quad Channel, 16-Bit, Serial Input, 4 mA to 20 mA and Voltage Output DAC.

    It will demonstrate, using the evaluation board, how to set the part into both Iout and Vout modes.

    It will show the on…

  • AD5755 Non-Linearity

    Question

    I'm getting a non-linear response on the output of the AD5755.  The Iout pin is connected to the Vout Pin.

    As I increase the load resistance a gain and offset error enters my system measurement.  It appears that

    there is another 30kOhm load…

  • AD5755-1 Not Responding

    Hi,

    We have purchased AD5755-1 Eval board and able to generate DAC voltages in the Eval board which we bought. Later we made our own custom board for AD5755-1, along with other peripherals. The custom board were not able to give DAC voltages, later when…

  • AD5755-1 external Rset PCB design

    Thanks for answering my question.

    I have a doubt about EVAL-AD5755-1 external Rset PCB design.

    Why did ADI open the solder mask on both sides of R1\R2\R3\R4, and add solder to the trace?

    Thank you！

  • Using the AD5755 family in Applications Without Dynamic Power Control

    For applications that do not require Dynamic Power Control it is possible to set up the AD5755 family of products without the use of the DC-to-DC converter. This reduces the number of external components required and is useful for low power applications…