Clock Synthesizer / Jitter Cleaner 2 HCSL Output PCIe Buffer
9DB202CGLF: Clock Synthesizer / Jitter Cleaner 2 HCSL Output PCIe Buffer
SeekIC Buyer Protection PLUS - newly updated for 2013!
268 Transactions
All payment methods are secure and covered by SeekIC Buyer Protection PLUS.
Number of Outputs : | 2 | Output Level : | HCSL | ||
Max Output Freq : | 140 MHz | Input Level : | HCSL, LVDS, LVHSTL, LVPACL, SSTL | ||
Max Input Freq : | 140 MHz | Supply Voltage - Max : | 3.465 V | ||
Supply Voltage - Min : | 3.135 V | Package / Case : | TSSOP-20 |
DescriptionThe ICS9DB202 is a high perfromance 1-to-2 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 ICS9DB202 may be necessary in order to reduce high frequency random and deterministic jitter components from the PLL synthesizer and from the system board. The ICS9DB202 has two PLL bandwidth modes. In low bandwidth mode, the PLL loop bandwidth is 500kHz. This setting offers the best jitter attenuation and is still high enough to pass a triangular input spread spectrum profile. In high bandwidth mode, the PLL bandwidth is at 1MHz and allows the PLL to pass more spread spectrum modulation.
For SerDes which have x10 reference multipliers instead of x12.5 outputs of ICS9DB202 (PCIEX0:1) can be set for 125MHz instead of 100MHz by configuring the appropriate frequency select pins (FS0:1).