Project description
FmcAdc100M14b4chb is a 4 channel 100MSPS 14 bit ADC card in FMC (FPGA Mezzanine Card) standard. Gain can be set by software in three steps: /-50mV,/-0.5V, /-5V. Offset correction is added in front of the ADC board, therefore voltage shift in the range of/- 5V is independent on the chosen gain range.
Specification
Parameter | Value |
max. sample rate | 105 MSPS |
bits/sample | 14 bit |
channels | 4 |
connectors | 4 x SMC for signals, 1 x SMC for trigger |
analog bandwidth | 25 MHz |
input impedance | 1kOhm / 50 Ohm - software selectable |
gain steps | /-50mV,/-0.5V, +/-5V for full scale |
offset correction range | +/- 5V for every input voltage range |
max. gain error | +/- 1% |
FMC to carrier interface | FMC low pin count connector with internal clock generator / high pin count connector with external clock |
ADC interface | Serial LVDS, 2 pairs for each channel |
Clock [link](https://www.ohwr.org/project/fmc-adc-100m14b4cha/blob/master | )External, from dedicated FMC connector pins, or from programmed on-board generator |
Project documents
Full schematic - PDF
file:
https://www.ohwr.org/97
PCB - PDF file:
https://www.ohwr.org/99
PCB - ZIP archive containing Altium Designer PcbDoc file:
https://www.ohwr.org/83
Informal description of the design - PDF
file:
https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/e2a206cec3aae225525e232cf2a41ebb/FmcAdc100M14b4cha_informal_description.pdf
Simple bill of materials and prices of the truncated versions of the
FmcAdc (reduced capability) - PDF
file:
https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/8ea08e17077323b9fef754eca5fcca48/FmcAdc100M14b4cha_simple_BOM_different_variants.pdf
Bill of materials - Excel
file:
https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/9c0beb6aa2f8ed64b574f9e4bd160be3/FmcAdc100M14b4cha_bill_of_materials.xls
>Board cost is estimated basing on current relation between
dollar/frank/EURO. The price of the components is dependent on their
quantity requested from the supplier. This estimation is for the amount
of the components sufficient for 10 boards. The higher number of
components, the lower the price.
Status
Date | Event |
25-10-2009 | Functional specification written. |
23-11-2009 | Selection of components, waiting for schematic symbols. |
2-12-2009 | Work on the FmcAdc100M14b4ch_a is suppressed, because estimated performance couldn't pass the expectations. |
18-12-2009 | Specification and schematic of new version has been added. |
22-01-2010 | FmcAdc100M14b4cha upgrade. Design revised and modified, better parameters expected. |
10-02-2010 | New design made with 3 input ranges and programmable offset. Need to finalise local clock circuit before PCB layout can start. |
24-02-2010 | Draft PCB layout done. Design document being written. Design review planned for 2 March. |
02-03-2010 | Design review of schematics done. Review02032010 |
04-03-2010 | Improvements made, responding to design review. Review02032010-improvements |
19-03-2010 | PCB review planned for 24 March 2010. |
24-03-2010 | Design review of PCB layout done. Review24032010 |
25-03-2010 | Small changes involved to the schematic (to make routing easier), PCB partially updated. Review24032010-improvements |
Documents related to previous version
Note:*
Shown below documents describe out-of-date versions of the ADC mezzanine board. They are put here only for learning and informative purpose. Documents' names do not match the design flow (so FmcAdc100M14b4ch_b is not the successor of FmcAdc100M14b4cha, even if the name may suggest something oposite). A valid and developed project is the FmcAdc100M14b4cha.*
Second version of FmcAdc board*
Functional specification : link
Technical specification: link
Schematic (PDF format): link
First version of FmcAdc board*
Functional specification : link
Technical specification : link
Schematic (PDF format): link
Analogue Anarchist's schematic review: link
-- Erik van der Bij - 24 March 2010