My customer has the following questions regarding XIO2001 in the PNP package:
I am using the latest data sheet document SCPS212E May 2009 Revised 2011.
The device that we are using is the XIO2001IPNP device.
There is no signal definition for PNP pins that are different from the ZGU and ZAJ.
What are the following signals? and how the should they be connected?
Can you please explain the power rail concept for each pin. For example do I need a dedicated filter power rail for each of the inputs VDDPLL_15_PCIE, VDDA_15_PCIE_RX, VDDA_15_PCIE_TX or one for all.
2. On the reference design the resistors between Ref0_PCIE to Ref1_PCIE (232OHM and 14.3K) are 0805 1/8W. Do they have to be 1/8W? what is the current/Voltage between these two pins?
3. The PNP does not have ground pins. Is the thermal pad a ground pin?
1. Please find attached the pin description for the requested signals.
Connect all VDDA_15 terminals to the same Pi filter, connect all VDDA_33 signals to the same Pi filter..., see Section 2 of the XIO2001's Implementation Guide at http://www.ti.com/lit/an/scpa045b/scpa045b.pdf
2. The votage across REF0 and REF1 is 1.2, a resistor with less power should be fine.
3. It does, they are called "VSS", connect the thermal pad to ground.
Thanks for the quick response. Is the above table part of a document? Could you attach the document or provide a link?
Not, yet, but it is going to be included in the datasheet within two weeks.
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