40 / 25 / 28 Gb/s PRBS Source

The Centellax 40 G PRBS Source is a fully self-contained pattern generator operating at 40G, 28G, or 25 Gb/s data rates. The product contains an internal 19.9 GHz oscillator to supply the half rate clock source for 40 Gbps operation. Ordering options substitute the correct oscillator frequency for 28 G or 25 Gb/s operation. Alternatively, a wideband option allows the user to supply a half rate clock externally to operate at any data rate between 22 and 44 Gb/s. The 40 G PRBS source is based on full custom ASICs, allowing a high degree of integration. The low parts count in the signal path minimizes the degradation of the low phase noise oscillator, providing an extremely clean eye pattern. Utilizing the internal oscillator, the generator achieves world class performance of less than 400 fs rms jitter, with a 500 mv output amplitude and < 7 ps rise time.