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Many CASPER instruments use reconfigurable open-source hardware built around Xilinx FPGAs.

A typical CASPER instrument will have a [SNAP] board, or one or two ADC boards connected to a [ROACH] for signal acquisition and a small amount of pre-processing and will send data over a network link to a other FPGA boards or commodity CPUs and GPUs, which will perform the bulk of the signal processing.

Currently available CASPER-supported FPGA boards are shown in the matrix below. This support matrix is subject to change over time.


For information about acquiring CASPER hardware, click here.

Processing Boards

3 x HMCAD1511 ADC's, Kintex7 FPGA, and SFP+ 10Gbe
  • SNAP2 (2017) | Kintex Ultrascale)
  • SKARAB (2017) | Virtex 7)

Mezzanine Boards

Data Transport
  • CX4 (3 x CX4 Mezzanine board)
  • SFP+ (Quad SFP+ Mezzanine board)
  • SKARAB QSFP+ (QSFP+, 40GbE, 4 ports Mezzanine board)
Data Storage
  • SKARAB HMC (Hybrid Memory Cube, 4GB, 32Gbps, 2 link, serialised Mezzanine board)
Dual 8-bit, 1000Msps (or single 8-bit 2000Msps), Atmel/e2v AT84AD001B ADC
Single-8 bit, 3000Msps National ADC083000 ADC
64 inputs, 64 Msps, 12 bit, double wide board
Quad 8-bit, 250 Msps, Analog Devices AD9480 ADC
Dual 12-bit, 550 Msps, TI ADS54RF63I
Dual 14-bit, 400 Msps, TI ADS5474
  • KatADC (2010 - present | dual 1.5GSPS or single 3.0GSPS)
Dual 8-bit 1.5GSPS (or Single 8-bit 3.0GSPS), National Semiconductor (now Texas Instruments) ADC08D1520 ADC, RF Front-End
16,8,4 inputs 8 bits 250,500,1000 MSPS, Hittite HMCAD1511, various input formats
  • ADC1x10000-4 (2012-2016.9 | Single 10.0 GS/s, 4 bit versions)
We have couple of boards available, if interested, please email:homin@asiaa.sinica.edu.tw, all information is : adc10G
Single 10-bit 2.2GSPS, e2v AT84AS008 ADC & AT84CS001 DMUX
3 x HMCAD1511 ADC's, Kintex7 FPGA, and SFP+ 10Gbe
  • SKARAB ADC32RF45X2 (2017 - | ADC, 4 channel, 3.0GSPS, 14 bit, RF input up to 4.0GHz, JESD204B)
2 x Dual 14 bit TI ADC32RF45 ADC's
DAC Boards
Dual 16-bit, 1000 Msps, TI DAC5681

Suggested Supporting Equipment