8 Channel 16 bit DAC Module Xilinx Virtex II FPGA


s377The module consists of two DAC7634-quad digital to analogue converters (DAC). They are serially connected to a Xilinx Virtex-II FPGA, which is responsible for transferring the output samples to the DACs.

DAC output range is +/-2.5V. Output channels are either available directly from the DAC chips or a buffered output – via output opamps.

The Xilinx Virtex-II FPGA is configured from a ComPort. FPGA (re)configuration is allowed only prior to a module (TIM) reset or at anytime using the JTAG connector and a Xilinx programming cable.

The on-board memory can be externally accessed. Some waveform patterns can be stored, read back and converted into analogue signals – Pattern generator mode.

s377btmDAC output samples are input to the FPGA from one of following sources: Comport or SHB. The current default firmware implement only the Comport option. DAC samples can by routed to the memory for Pattern Generator mode or straight to the DACs for Direct Transfer mode


  • Xilinx XC2v1000-4 FPGA
  • 1M word of 16 bit ZBT RAM
  • 8 Channels of DAC outputs
  • Using 16 bit Burr Brown DAC7634 with a settling time of 10µs to 0.003%
  • Single width module
  • Programmable sample/selectable clock
  • Three ‘C4x type ComPorts
  • One 400 Mbyte/s SHB interface
  • Pattern Store & FPGA for user defined output waveforms
  • Configuration Via ComPort
  • TIM standard compatible.
  • 12 months warranty


Simple implementation of multi-channel solutions 
Scaleable system configuration 
Direct connection from C6000 DSPs to DACs 
On-board FPGA for SoftDSP algorithms 
Shorter development cycles 
Flexible system architectures and specifications

SMT377v2 Reprogramming

SMT377 User Manual

SMT377 Reprogramming