GENERAL DESCRIPTION

The 9DB202-01 is a high performance 1-to-1 Differential-to HCSL

Jitter Attenuator designed for use in PCI Express™ systems. In

some PCI Express systems, such as those found in desktop PCs,

the PCI Express clocks are generated from a low bandwidth, high

phase noise PLL frequency synthesizer. In these systems, a jitter

attenuating device may be necessary in order to reduce high

frequency random and deterministic jitter com-ponents from the

PLL synthesizer and from the system board.

FEATURES

• One 0.7V current mode differential HCSL output pair

• One differential clock input

• CLK and nCLK supports the following input types:

LVPECL, LVDS, LVHSTL, SSTL, HCSL

• Maximum output frequency: 140MHz

• Input frequency range: 90MHz - 140MHz

• VCO range: 450MHz - 700MHz

• Cycle-to-cycle jitter: 30ps (maximum)

• RMS phase jitter @ 100MHz, (1.5MHz - 22MHz):

2.31ps (typical)

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Available in lead-free RoHS compliant package

• Industrial temperature information available upon request

• For functional replacement use 8714004