Difference between revisions of "FPGA Test Board"
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| − | = |
+ | =Goals= |
| + | * LED<->PhotoDiode tests |
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| − | ==layout== |
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| + | * 500MS/s scope |
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| − | * Add SUSSync check lines (+ resistor, + protection(?)) |
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| + | * HF (GHz) -> LF mixing, + probes? |
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| − | * Add few LEDs to spartan 3 |
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| + | * HF sending/receiving + direction sensing |
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| − | * add location for oven-controlled crystal |
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| − | * Check layout 25MHz crystal (same as 32MHz papilio?) |
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| − | * Power connector? |
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| − | |||
| − | ==questions== |
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| − | * polarity of CCR on Display Port cable? ([http://en.wikipedia.org/wiki/Display_port wiki] has pin 7 as +lane_2, wim pin 7 as -CCR) -- Oh, that's because the sink-side has the pinning reversed -- but then the polarity of MR is wrong |
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=Components= |
=Components= |
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=Other stuff= |
=Other stuff= |
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* SMD291 - FLUX [http://nl.farnell.com/chip-quik/smd291/flux-syringe-10cc-no-clean/dp/1850216?Ntt=1850216 farnell 1850216], [http://www.digikey.com/product-detail/en/SMD291/SMD291-ND/355201 digikey], or [http://www.digikey.com/product-detail/en/SMD291NL/SMD291NL-ND/1160000 5cc] |
* SMD291 - FLUX [http://nl.farnell.com/chip-quik/smd291/flux-syringe-10cc-no-clean/dp/1850216?Ntt=1850216 farnell 1850216], [http://www.digikey.com/product-detail/en/SMD291/SMD291-ND/355201 digikey], or [http://www.digikey.com/product-detail/en/SMD291NL/SMD291NL-ND/1160000 5cc] |
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| + | * SMD291AX solder paste [http://www.farnell.com/datasheets/1376171.pdf datasheet] (the one from digikey is only partly readable) |
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| − | * Differential impedance calculator [http://www.eeweb.com/toolbox/edge-coupled-microstrip-impedance/ eeweb] |
+ | * Differential impedance calculator (wrong results for strip?): [http://www.eeweb.com/toolbox/edge-coupled-microstrip-impedance/ eeweb], [http://www.mantaro.com/resources/impedance_calculator.htm mantaro.com] |
| + | =PCB Errors= |
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| − | =Todo/tocheck= |
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| + | * NC pins on DisplayPort should have been connected to ground |
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| − | * make papilio output +/- 71MHz differential signal, at several differential voltages. |
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| − | * add footprints to eagle |
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| − | * can spartan-differential easily be made compatible with rs484? |
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=See Also= |
=See Also= |
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Latest revision as of 16:34, 8 October 2014
Goals
- LED<->PhotoDiode tests
- 500MS/s scope
- HF (GHz) -> LF mixing, + probes?
- HF sending/receiving + direction sensing
Components
- FPGA: vq100, FPBG (1mm) footprints
- Spartan 3 (datasheet)
- Spartan 6 (spartan 6 family overview, Spartan 6 DC switching)
- Scope functionality:
- ADC
- Analog switches, farnell 1755412RL, TEXAS INSTRUMENTS - TS5A4594DBVR - IC, ANALOG SWITCH 5V SOT23-5: 1 ch, On resistance 4-7 Ohm, Seperation @ 100MHz: -34 dB
- opamp:
- 2112569, ANALOG DEVICES OPAMP, RRO, 300MHZ, 650V/µS, 8SOIC
- Video farnell 1495449, FHP3450IMTC14X FAIRCHILD, QUAD VIDEO, SMD, TSSOP14, large 1/f noise, but 4 ch, > 100MHz
- opamp:
- AWG functionality:
- AD9764 (14 bit, v02), F9425640 (EUR 14.96)
- Niet op voorraad: TEXAS INSTRUMENTS - DAC5662IPFB. - IC, DAC 12BIT 200MSPS DUAL 48TQFP, Farnell 1754791, EUR 1.40
- Dual 16 bit, 200MHZ DAC: MAX5875, digikey 28EUR
- 1000BaseT ethernet chip + connector
- 16 pin header
- ?? 96-pin harting connector?
- 25MHz/50MHz clock for instance
- POWER(1.2V, 2.5, 3.3?),
- LDO's farnell search for 1.2, 2.5, 3.3 V LDO's in SOT223
- 3.3V: farnell 1494942, EUR 0.37 (x10) SOT223
- 2.5V: farnell 7208340, EUR 0.21 SOT223
- 1.2V: farnell 2316819, EUR 0.24 SOT 223
- Switching:
- LDO's farnell search for 1.2, 2.5, 3.3 V LDO's in SOT223
- DisplayPort connector MULTICOMP RECEPTACLE, DISPLAY PORT, SMT, farnell 1686453, EUR 0.76 (with of plug: 20.0mm)
- CCR: pin 9/7, MR: pin 10/12; ML_Lane 0: pin 1/3, ML_Lane 1: pin 4/6
- Differential Cable Driver CLC001
- USB connector:
- farnell 2293752 € 0,60 Micro B connector, SMD; different layout than Papilio
- LEDs farnell 2001788,'bright yellow', 0402.
Xilinx PCB design guides
- Four and six layour PCB Design for Spartan-3E FT258 BGA
- Xilinx Spartan-6 FPGA PCB Design guide Lots of info about traces, capacitance, etc.
Other stuff
- SMD291 - FLUX farnell 1850216, digikey, or 5cc
- SMD291AX solder paste datasheet (the one from digikey is only partly readable)
- Differential impedance calculator (wrong results for strip?): eeweb, mantaro.com
PCB Errors
- NC pins on DisplayPort should have been connected to ground
