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Hi there,

I am designing (my first complex) circuit which connects the AD9201 to a MAX2120. The MAX2120 outputs IQ in differential mode. I want to use an external reference voltage (0-3.3V) so my schematic looks like Figure 25 of the AD9201 datasheet but IINA has a direct connection from I+ and IINB is connected to I- of the MAX2120. Same with Q and QIN. REFSENSE is connected to AVDD. 

Am I correct that there can't be a connection between IINB and VREF and that VREF should therefore be left unconnected?

Kind regards,

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[edited by: ParAvion at 2:17 PM (GMT 0) on 19 May 2019]