Legacy Information
This page contains information on a previous versions of the switch card.
Known issues of v1
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capacitor C176 should be not mounted by default (if it is mounted one can not program the chip with ISP)
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transistor T7 has drain interchanged with source. Quick fix: mount upside down and rotated, as presented below.
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pull up resistors are missing on DOUT of all ADG1414 ICs (IC90 - IC153).
- Quick fix: add 33kOhm resistor between pins 22 and 23.
- In case of PCB redesign: add 33kOhm between pin 22 and +3.3V
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resistor R579 should be not mounted