General Description

The AV9107C-19 and AV9107C-20 are high-speed clock generators designed to support fibre channel system requirements. The AV9107C-19 generates a single copy of the 106.25 MHz from a 17 MHz crystal. The AV9107C-20 provides a second copy of the 106.25 MHz clock with output skew less than ±100ps. An exact frequency multiplying ratio ensures better than –100 ppm frequency accuracy using a standard AT crystal with external load capacitors (typically 33pF±5 for an 18pF load crystal). Achieving ±100 ppm over four years requires the crystal to have a ±20 ppm initial accuracy, ±30 ppm tempera-ture and ±5 ppm/year aging coefficients.

特性 Features

● Generates one or two 106.25 MHz clocks from a 17 MHz crystal

● Less than 60ps one sigma jitter

● Less than ±200ps absolute jitter

● Output skew less than ±100ps on two channel version (-20)

● Rise/fall times less than 4ns driving 15pF

● On-chip loop filter components

● 3.0V-5.5V supply range

● 8-pin, 150-mil SOIC package

Applications

● Specifically designed to support the high-speed clocking requirements of fibre channel systems