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Description

The PI6CG18401 is a 4-output very low power PCIe Gen1/Gen2/Gen3/ Gen4 clock generator. It uses 25MHz crystal or CMOS reference as an input to generate the 100MHz low power differential HCSL outputs with on-chip terminations. The on-chip termination can save 16 external resistors and make layout easier. An additional buffered reference output is provided to serve as a low noise reference for other circuitry. 
It uses Diodes proprietary PLL design to achieve very low jitter that meets PCIe Gen1/Gen2/Gen3/Gen4 requirements. It also provides various options such as different slew rate and amplitude through strapping pins or SMBUS
so that users can configure the device easily to get the optimized performance for their individual boards. The device also supports selectable spread-spectrum options to reduce EMI for various applications.

Features

  • 1.8V supply voltage
  • Crystal/CMOS input: 25 MHz
  • 4 differential low power HCSL outputs with on-chip termination 
  • Individual output enable  
  • Reference CMOS output
  • Programmable Slew rate and output amplitude for each output
  • Differential outputs blocked until PLL is locked
  • Selectable 0%, -0.25% or -0.5% spread on differential outputs
  • Strapping pins or SMBus for configuration;
  • 3.3V tolerant SMBus interface support
  • Very low jitter outputs
  • Differential cycle-to-cycle jitter <50ps
  • Differential output-to-output skew <50ps
  • PCIe Gen1/Gen2/Gen3/Gen4 compliant
  • CMOS REFOUT phase jitter is < 1.5ps RMS
  • Packaging (Pb-free & Green): 32-lead 5×5mm TQFN

Product Specifications

Product Parameters

Supply Voltage 1.8
Jitter 1
Skew 50
Output Frequency 100
Input Type(s) Crystal, LVTTL, LVCMOS
Output Type(s) LP-HCSL
Number of Outputs 4
Function Generator
Temperature -40 to 85

Technical Documents

Application information

Evaluation Boards and User Guides

Design tool model software

Recommended Soldering Techniques
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PI6CG18401ZHE Obsolete W-QFN5050-32 GREEN 490 TRAY
PI6CG18401ZHIE Obsolete W-QFN5050-32 GREEN 490 TRAY
PI6CG18401ZHIEX Active W-QFN5050-32 GREEN 2500 T&R Request Sample

Environmental Compliance Legend:
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

PCNs

Product Change Notices

PCN # Issue Date Subject
PCN-2328 2018-04-12 Device End of Life for tray packaging only