Integrated Circuit Systems ICS874003
The ICS874003 is a high performance Differential-to-LVDS Jitter Attenuator designed for HiPerClockS™ use in PCI Express systems. The ICS874003 has 3 PLL bandwidth modes: 200kHz, 400kHz, and 800kHz. The 200kHz mode will provide maximum jitter attenuation, but with higher PLL tracking skew and spread spectrum modulation from the motherboard synthesizer may be attenuated.| Part No. | ICS874003 |
|---|---|
| Datasheet | ICS874003 Download |
| Manufacturer |  Integrated Circuit Systems |
| Description | PCI EXPRESS JITTER ATTENUATOR |
| Buy | Stock & Price |
FEATURES
● 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 - 160MHz
● Input frequency range: 98MHz - 128MHz
● VCO range: 490MHz - 640MHz
● Cycle-to-cycle jitter: 35ps (maximum)
● 3.3V operating supply
● Three bandwidth modes allow the system designer to make jitter attenuation/tracking skew design trade-offs
● 0°C to 70°C ambient operating temperature
● Available in both standard and lead-free RoHS compliant packages
GENERAL DESCRIPTION
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 400kHz provides an intermediate bandwidth that can easily track triangular spread profiles, while providing good jitter attenuation.
