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/73
PCB - ZIP archive containing Altium Designer PcbDoc file: https://www.ohwr.org/72
Informal description of the design - PDF file: https://www.ohwr.org/project/fmc-adc-100m14b4cha/uploads/e2a206cec3aae225525e232cf2a41ebb/FmcAdc100M14b4cha_informal_description.pdf
List of components - Excel file: https://www.ohwr.org/67
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 |
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Shown below documents describe out-of-date versions of the ADC mezzanine board.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). The valid and developed project name is* 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
-- ErikVanDerBij - 2 March 2010