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PI6CG18201

Very Low Power 1.8V, 2-Output PCIe 4.0 Clock Generator with on-chip termination

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Description

The PI6CG18201 is a 2-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 8 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 Incorporated 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.

Feature(s)

  • 1.8V supply voltage
  • Crystal/CMOS input: 25 MHz
  • 2 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): 24-lead 4×4mm TQFN

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)

 Standard

Function

 Generator

Input Type(s)

 Crystal, CMOS

Additive Jitter (ps)

 <0.5

Number of Outputs

 2

Maximum Output Frequency (MHz)

 100

Output Type(s)

 Low Power HCSL

Skew (PS)

 50

Supply Voltage (V)

 1.8

Ambient or Junction Temperature (°C)

 -40 to 85

Related Content

Quality Documentation
Applications
Desktop PC, Medical Device, Storage Array

Technical Documents

Application Information

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Recommended Soldering Techniques

TN1.pdf

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2770 2025-10-30 2025-10-30 Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products

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