I am testing a EVAL-AD8333. As I understood, the evaluation board has a pre-amp (AD8332) before the demodulator stage (AD8333), which is followed by further amplification (AD8021). I ordered this as in the website is written "The board is shipped fully assembled and tested and is signal ready. A pair of AD8332 low-noise amplifiers (LNA) provide input matching and amplification for the differential input of the AD8333."
However, there is no amplification in the oscilloscope. I noticed that the AD8332 "Gain Control Voltage" is connected to ground, so I wonder if this is the reason why there is no amplification.
Thanks for any feedback on that,
On the eval board, only the LNA's are used in the AD8332 and not the VGA's. The LNA does have a 19 dB gain.
As PRB suggested, please describe your test setup, including signal levels and frequencies at the 4LOx and RFnx inputs, as well as what you see on the output.