RockyLogic Ant8

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RockyLogic Ant8
Rockylogic ant8.png
Status planned
Channels 8
Samplerate 500MHz
Samplerate (state) ?
Triggers ?
Min/max voltage ?
Memory ?
Compression ?

The RockyLogic Ant8 is a USB-based, 8-channel logic analyzer with up to 500MHz sampling rate.

See RockyLogic_Ant8/Info for more details (such as lsusb -v output) about the device.


  • Xilinx Spartan-II XC2S30 VQ100AMS0341 (FPGA; 13,824 total distributed RAM bits, 24K total block RAM)
  • Xilinx XC9572XL VQ44BMN0345 10C (CPLD; 10ns pin-to-pin logic delays)
  • FTDI FT245BM (USB FIFO device)
  • IDT ICS501M (clock multiplier)
  • Atmel AT93C66 (4kB, three-wire serial EEPROM)
  • ON Semiconductor (On) HC00A PGZI (quad 2-input NAND gate)
  • National/TI LP2989 (marking: 33AB 2989 IM-2.5) (micropower/low-noise, 500mA ultra low-dropout regulator)
  • 20MHz crystal (for the FPGA)


See also this flickr set for more PCB photos of the device.


See the Ant18e wiki page for a description of the Ant8/Ant16/Ant18e protocol.

DIY Ant8 probe cable

The Ant8 cable shipped with the device doesn't have the best quality probes/hooks, but you can easily make your own cable where you can attach the better-quality E-Z Hooks.


  • 10-pin colored ribbon cable, such as this one.
    • The colors match the one shipped with the Ant8 (white, gray, purple, blue, green, yellow, orange, red, brown) if you remove the 10th (black) lead. The brown lead is GND.
  • A "SUB-D" connector where you can attach the ribbon cable, such as this one.
  • 5 female-female jumper wires, such as these ones, which we'll cut into two halves to get 10 female connectors (only 9 needed).
  • 9 short pieces of heat-shrink tubing.
  • 9 E-Z Hook grippers/hooks to attach to the cable.


See also this flickr set for more photos.