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External Reference for UG-405 (ADF41020 Eval Board)

Question asked by jeremyrode on Jul 14, 2014
Latest reply on Jul 14, 2014 by rbrennan

Interested in driving the UG-405 with an external reference frequency though the REFIN external SMA.  I noticed that there is no jumper to select between the on-board TXCO and the external reference.  Can I just drive the REFIN port directly, or do i need to depopulate R2?  Seem like an external reference would fight with the on-board TXCO through R2.