8-GHz fanout buffer has ultra-low jitter

Suited for low-noise clock distribution in cellular infrastructure, SONET, Fibre Channel, Gigabit Ethernet, and high-speed A/D and D/A applications, the HMC987LP5E 0 to 8-GHz fanout buffer features jitter performance of 0.6 attoseconds/√Hz — or 50 fs over its entire frequency range. The IC has eight differential or 16 single-ended LVPECL outputs, and one CML output with adjustable swing/power level, and dissipates only 240 mW.

The chips propagation delay is typically 95 ps, while rise and fall times are 21 and 19 ps. Designers can enable or disable individual outputs to reduce power consumption when not needed. The IC operates over –40°C to 85°C and comes in a ceramic 3 x 3-mm SMT package. ($7.50 ea/500 — available now.)

By Jim Harrison

Hittite Microwave , Chelmsford , MA , United States
Sales 978-250-3343

www.hittite.com