| Version 22 (modified by , 8 years ago) (diff) |
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This is a small board which converts an electrical clock signal into an optical clock signal for use in AMC13 test stands. The PCB layout was done with ExpressPCB.
The board accommodates a SiLabs? Si590 programmable oscillator, with the nominal frequency chosen as 80.160 MHz (LHC nom. 40.08 MHz * 2). A jumper option allows an external clock to be input.
Requires 5V power from micro-USB (e.g. any phone charger or computer).
Assembly notes:
- LEDs must be installed with longer lead in round pad
- Be sure to install 2 inductors and 4 capacitors on the bottom (see notes).
PCB Design -- Latest (Rev 3)
- PCB Layout: PCB PDF (very small changes to improve solderablility in V3)
- Note: design file was not updated until 3/29/16 for V3
- Parts List: XLS (about US$30 per board for parts)
- Back side parts placement: PDF
- DigiKey Invoice from last parts order
- 3-D printable box for the PCB: top bottom
PCB Design (Rev 2)
- Schematic: SCH PDF
- PCB Layout: PCB PDF
- Parts List: XLS (about US$30 per board for parts)
- Back side parts placement: PDF
PCB Design (Rev 1)
ECOs (fixed in v2)
- pin 1 of JP1 not connected
- pin 14 of U2 not connected
- left end of C9 spuriously connected to 3.3V
- U2-15 and U2-17 must be tied to GND
