ASNTPRBS34_1 View full size
  • Broadband frequency range from 8Gbps – 34Gbps
  • On board data rate multiplexer to reduce the input clock frequency rate
  • Adjustable phase shift for multiplexer clock input
  • 1-256 divide sync output
  • Differential inputs and outputs
  • Minimal insertion jitter
  • Fast rise and fall times
  • 50% duty cycle sync output on all divide ratios
  • Single +3.3V supply

Function Operating Frequency Power, mW Package
2^7-1 / 2^15-1 PRBS Generator with Sync Output 8 Gbps-34 Gbps 5600 Board


Fig. 1 Functional Block Diagram

The ASNT_PRBS34_1 is a broadband 27-1 or 215-1 PRBS generator intended for test, prototyping, microwave, and communication applications. A single-ended or differential clock from 4GHz to 17GHz can be used. A differential Sync Output divides the input clock from 1 to 256 allowing a PRBS7 pattern view on an oscilloscope by using a divide ratio 127 or 254. The PRBS7/PRBS15 data output is multiplexed to double the data rate, giving a maximum data rate of 34Gbps. An on-board trim potentiometer allows to phase adjust the multiplexer clock input for all input clock frequencies in a specified range to ensure the best output is achieved. An on-board PRBS reset switch presets the generator to avoid the all zero state lock-up.