Lightning Logo

3DR Lightning II – 8-channel, 14-bit, 3 GSPS Analog-to-Digital Converter



  • Altera Arria 10 FPGA
  • 4 GB DDR3
  • Variable ENOB: 8.8 – 9.2

Analog-to-Digital Conversion (ADC)

  • AD9208
  • Configurable sample rate up to 3 GSPS
  • Resolution: up to 14-bits

External I/O Support Available Via

  • Y-Connector (2x)
  • Z-Connector (1x)
  • UART

Tailored Clocking and Triggering Flexibility

  • 100 MHz external input clock
  • 2x SMA input for use as trigger/gate
  • Clock inputs (SMA)




  • Dimensions: 6.25” L x 6.25” W
  • Distance between board: 1.1” (stacked, boardto-board)

Addl Functionality

  • Microcontroller interface via K61 μ controller
  • Controls poweron and powerdown sequencing
  • Monitors voltages and reports faults over I2C bus
  • Monitors current, efuse shutdown, and reports over I2C bus
  • Monitors board temperature over I2C
    bus (external sensor available)
  • On board EEPROM for data storage and logging (write protect available)
  • FPGAs and CPLDs programmable over JTAG Bus (for applicable
    modules with FPGAs and CPLDs), or via connectors from other 3DR computing boards (firmware required)
Lightning II with shadow

Block Diagram