GENERAL DESCRIPTION
The 874003DI-02 is a high performance Dif-ferential-to-LVDS
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
attenuator may be required to attenuate high frequency random
and deterministic jitter components from the PLL synthesizer and
from the system board. The 874003DI-02 has a bandwidth of 3MHz.
The 3MHz provides an intermediate bandwidth that can easily track
triangular spread profi les, while providing good jitter attenuation.
The 874003DI-02 uses IDT’s 3rd Generation FemtoClockTM
PLL technology to achieve the lowest possible phase noise.
The device is packaged in a 20 Lead TSSOP package, making it
ideal for use in space constrained applications such as PCI Express
add-in cards.

• Three differential LVDS output pairs
• One differential clock input
• CLK and nCLK supports the following input types:
LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Output frequency range: 98MHz - 320MHz
• Input frequency range: 98MHz - 128MHz
• VCO range: 490MHz - 640MHz
• Cycle-to-cycle jitter: 30ps (maximum)
• Supports PCI-Express Spread-Spectrum Clocking
• 3MHz PLL loop bandwidth
• 3.3V operating supply
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package