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Can anyone tell me about the baseband input to the ADF9010   THANKS A LOT!

Question asked by ybb327 on May 7, 2013
Latest reply on May 26, 2013 by enash

Does ADF9010 need TXBBIP TXBBIN TXBBQP TXBBQN input at the same time?

in the datasheets of the ADF9010 it says that the baseband input needs a differential drive of 1.4Vp-p with a 500mV dc bias. and it says that one of the transmit baseband characteristics is the common-mode output level is 0.6V .  does the 500mV dc bias and the 0.6V common-mode output level mean the same thing ? 

I use the DAC902 to generate a differential voltage of 1.4Vp-p with an 500mV common mode.inputting to the TXBBIP and TXBBIN . However I use the Realtime-Spectrum-Analyzer to see the output of the ADF9010 in the TXN and TXP (FIG 1) , and the result is not the same as the the TXBBIP and TXBBIN seeing from the RSA(FIG 2),I don't know why do this happen.

FIG.1

3.JPG

 

FIG.2

1.JPG

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