The OpenADC platform is an open-hardware and open-software solution for your digitizing needs. Designed to fit a variety of FPGA development boards, it can significantly reduce the cost of experimenting with side-channel analysis, software defined radio (SDR), and lots more! See full details on the OpenADC Project at Assembla.

The design features:

1. High speed (105 MSPS) ADC, for reduced cost can mount lower-speed units of same footprint
2. LNA with computer-controlled gain, ranges from -10dB to 55dB (at 55dB gain full-scale input = 800µV P-P). Analog BW is ~50 MHz, although remains usable up to 200-300 MHz if signal is pure, since you can increase gain to compensate for roll-off (see docs for details)
3. External clock input for synchronizing to specific clock source - idea for sampling based on externally locked clock
4. Adjustable phase shift on sampling point to shift when samples occur based on external clock
5. Transformer-coupled input for maximum analog bandwidth (>500MHz, but note SFDR of ADC is only ~300 MHz)
6. Mounts to Avnet Spartan-6 LX9 Microboard, but with minimal modifications (e.g.: cutting pins + adding a wire) can fit to almost any FPGA board with 30 or 40-pin dual-row header, see OpenADC Wiki
7. Open source hardware + software

Download the Datasheet

FPGA Targets

Combined with a FPGA, it makes a powerful capture tool. Originally designed for the $90 Spartan 6 LX9 Microboard, it can be used with almost any other FPGA board too.

For full details + source head over to The OpenADC Project on Assembla

Example Code

Again see all the examples on the The OpenADC Project on Assembla . Current SW/HW is provided to give you examples of:

1. Capturing from ADC to internal FIFO (using BRAM of FPGA), then downloading to computer
2. Capturing from ADC to DDR memory, then downloading to computer
3. Controlling a board & synchronizing capture to that board (for side-channel analysis)

OpenADC Complete: $137 USD A complete assembled & tested board. Test includes analog BW comparison to validate high-frequency response. Includes OpenADC only - you will need a FPGA board (such as Avnet LX9) to use. Comes with 2x6 MALE headers which are not mounted, but at your request can be soldered onto the PCB facing downward as in top photo (option when ordering). The headers are included either way in the order. Other option is how resistors are mounted which select input source - changing this requires you to resolder resistors, see datasheet.

{IMG(src=“tiki-download_file.php?fileId=47&display” width=“150”)}OpenADC PCB{IMG} OpenADC PCB $19
OpenADC Complete $137
OpenADC Complete for SASEBO-W (female headers, power wires setup) $147

2x6 Male Headers

Not MountedMounted

Default Input

Low Noise AmplifierTransformer

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