CDCM9102 Low Noise Two Channel 100MHz PCIe Clock Generator | TI.com

CDCM9102 (ACTIVE) Low Noise Two Channel 100MHz PCIe Clock Generator

 

Description

The CDCM9102 is a low-jitter clock generator designed to provide reference clocks for communications standards such as PCI Express™. The device supports up to PCIE gen3 and is easy to configure and use. The CDCM9102 provides two 100-MHz differential clock ports. The output types supported for these ports include LVPECL, LVDS, or a pair of LVCMOS buffers. HCSL signaling is supported using an AC-coupled network. The user configures the output buffer type desired by strapping device pins. Additionally, a single-ended 25-MHz clock output port is provided. Uses for this port include general-purpose clocking, clocking Ethernet PHYs, or providing a reference clock for additional clock generators. All clocks generated are derived from a single external 25-MHz crystal.

Features

  • Integrated Low-Noise Clock Generator Including
    PLL, VCO, and Loop Filter
  • Two Low-Noise 100-MHz Clocks (LVPECL,
    LVDS, or pair of LVCMOS)
    • Support for HCSL Signaling Levels
      (AC-Coupled)
    • Typical Period Jitter: 21 ps pk-pk
    • Typical Random Jitter: 510 fs RMS
    • Output Type Set by Pins
  • Bonus Single-Ended 25-MHz Output
  • Integrated Crystal Oscillator Input Accepts
    25-MHz Crystal
  • Output Enable Pin Shuts Off Device and Outputs
  • 5-mm × 5-mm 32-Pin VQFN Package
  • ESD Protection Exceeds 2000 V HBM, 500 V
    CDM
  • Industrial Temperature Range (–40°C to 85°C)
  • 3.3-V Power Supply

Design with CDCM9102

Recommend Input Frequency Output Frequencies
 MHz
Input Frequency  MHz
 MHz  MHz

Parametrics

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Part number Order Input type Number of outputs Output frequency (Max) (MHz) Programmability Operating temperature range (C) Output type Features VCC out (V) VCC core (V)
CDCM9102 Order now LVPECL     2     1296     Pin configuration     -40 to 85     LVDS     3.3-V VCC/VDD     3.3     3.3    
CDCE6214-Q1 Order now Crystal           -40 to 105       Pin Programming     1.8
2.5
3.3    
1.8
2.5
3.3    
CDCI6214 Order now Crystal     4     350     EEPROM
Pin configuration
Serial interface    
-40 to 85     LVCMOS
LVDS
LVPECL    
I2C
Pin programming    
1.8
2.5
3.3    
1.8
2.5
3.3