• it seems there is a 660kHz noise present when output a 2.1~2.2V voltage

    I use a AD5338R to bias a power amplifier. There is two signal tone present around +/- 660kHz offset. I try sevral things to identify the source.

    1. if replace AD5338R by a LDO to bias PA , these two spur dissappeared;
    2. increase the AD5338R output to 2.3V…
  • RE: Connecting Vref on AD5338R

    Hi,

    Apologies for the delay.

    The AD5338R has a common reference pin. When using the internal reference, this is the reference output pin. When using an external reference, this is the reference input pin. The default for this pin is as a reference output…

  • TAGS LIST: Data Converters

    AD693
    AD5410
    AD5412
    AD5420
    AD5422
    AD5735
    AD5755
    AD5755-1
    AD5737
    AD5757
    AD5421
    AD421
    AD5758
    AD7569
    AD7669
    AD7868
    AD7869
    AD5593R
    AD5592R
    AD5940
    AD5941
    AD7293
    AD7294-2
    AD7292
    AD5590
    AD7294
    L…