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PI6CG18401

Very Low Power 4-Output PCIe Clock Generator with on-chip termination

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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

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

Quality & Reliability

Technical Documents

Application information

Design tool model software

Evaluation board

Recommended Soldering Techniques

Additional Technical Documents are available upon request: 
Application information, Evaluation board, and Other technical documents

Request Documents
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
PI6CG18401ZHIE Mouser Electronics Inc. 490 6/23/2018 Buy Now Americas
PI6CG18401ZHIEX Digi-Key Electronics 2495 6/23/2018 Buy Now Americas

PCNs

Product Change Notices

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