... | ... | @@ -9,34 +9,87 @@ the improvements made. |
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- LA00\_CC\_P should be called LA00\_P\_CC (same for N). Change also
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where this signal is used.
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- *Names corrected on both places.*
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- *Name haven't been corrected, because of the way how Altium
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Designer recognizes differential pairs. Positive line's name
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needs to be P-ended and negative one needs to be N-ended.
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CC-ended line's names do not follow this Altium's rule. It is
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decided to use for ex. LA00\_CC\_P instead to LA00\_P\_CC (which
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follows the VITA 57 standard).*
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<!-- end list -->
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- VIO\_B\_M2C is not used: remove signal.
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- *Done.*
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- Remove all signals that are not used in the design to prevent
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confusion.
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- *Done.*
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<!-- end list -->
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- Mark the meaning of B1-B4 and FIG1-FIG6.
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<!-- end list -->
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- Mark LA23\_N/P to be a differential pair.
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- *Done.*
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<!-- end list -->
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- Check if LA06\_P/N are correct (pair, both signals used?).
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- *Done. They aren't treated as a pair, but both of them are
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used.*
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## Sheet 2: Input stage
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- Sheets 3, 4 and 5 should be the same. This has not been verified.
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Make sure all modifications are done on all channels.
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- *Done.*
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- Consider inserting an inductor at the negative input to make it
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symmetrical to the positive input (verify AA's mail about this).
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- *It is not necessary. The signal filtering at the input only is
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enough. Adding another filter is just like a filtering in the
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feedback loop. May cause instability of the differential
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amplifier.*
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- Add a note on the input ranges, voltage ranges at critical points in
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the schematic. This should also make clear that it's an input range
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of 10V (Vpp) with a programmable offset between -5V and +5V.
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Possibly give examples of usage to clarify.
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- If 50 Ohm setting: +/-7.5V maximum.
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- Add names SW1-SW7 in schematic (refer to sheet 11).
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- *Done.* "Menu" -\> "Tools" -\> "Schematic Preferences" -\>
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"Graphical Editing" -\> "Single '\\' Negation" has to be
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highlighted.
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## Sheet 6: Linear Technologies' ADC
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- Add a note about the different frequencies of DCO, FR, ENC.
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- *Done.*
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- Add 2 resistors to select the sensitivity of the ADC (SENSE): 100
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Ohm to Vdd, 100 K placeholder to Gnd (normally not mount).
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- *Done.*
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<!-- end list -->
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- symbol misses overline on CS.
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- *Done.*
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## Sheet 7: DACs and Vref source
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... | ... | |