●The NB3N1200K and NB3W1200L differential clock buffers are DB1200Z and DB1200ZL compliant and are designed to work in conjunction with a PCIe compliant source clock synthesizer to provide point−to−point clocks to multiple agents. The device is capable of distributing the reference clocks for Intel® QuickPath Interconnect (Intel QPI & UPI), PCIe Gen1/Gen2/Gen3/Gen4, SAS, SATA, and Intel Scalable Memory Interconnect (Intel SMI) applications. The VCO of the device is optimized to support 100 MHz and 133 MHz frequency operation. The NB3N1200K and NB3W1200L utilize pseudo−external feedback topology to achieve low input−to output delay variation. The NB3N1200K is configured with the HCSL buffer type, while the NB3W1200L is configured with the low−power NMOS Push−Pull buffer type.
●Features
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● 12 Differential Clock Output Pairs @ 0.7 V
● HCSL Compatible Outputs for NB3N1200K
● Optimized 100 MHz and 133 MHz Operating Frequencies to Meet The Next Generation PCIe Gen 2/Gen 3/Gen4 and Intel QPI & UPI Phase Jitter
● DB1200Z Compliant
● 3.3 V ±5% Supply Voltage Operation
● Fixed−Feedback for Lowest Input−To−Output Delay Variation
● SMBus Programmable Configurations to Allow Multiple Buffers in a
●Single Control Network
● PLL Bypass Configurable for PLL or Fanout Operation
● Programmable PLL Bandwidth
● 2 Tri−level Addresses Selection (9 SMBUS Addresses)
● Individual OE Control Pin for Each of 12 Outputs
● 50 ps Max Output−to−Output Skew Performance
● 50 ps Max Cycle−to−Cycle Jitter (PLL mode)
● 100 ps Input to Output Delay Variation Performance
● QFN 64−pin Package, 9 mm x 9 mm
● Spread Spectrum Compatible: Tracks Input Clock Spreading for Low EMI
● 0°C to +70°C Ambient Operating Temperature
