4 OUTPUT PCIE GEN1/2 SYNTHESIZER
DATASHEET
IDT5V41066
Recommended Applications
4 Output synthesizer for PCIe Gen1/2
General Description
The IDT5V41066 is a PCIe Gen2 compliant
spread-spectrum-capable clock generator. The device has
4 differential HCSL outputs and can be used in
communication or embedded systems to subtantially
reduce electro-magnetic interference (EMI). The spread
amount and output frequency are selectable via select pins.
Output Features
• 4 - 0.7V current mode differential HCSL output pairs
Features/Benefits
• 20-pin TSSOP package; small board footprint
• Spread-spectrum capable; reduces EMI
• Outputs can be terminated to LVDS; can drive a wider
variety of devices
• Power down pin; greater system power management
• OE control pin; greater system power management
• Spread% and frequency pin selection; no software
required to configure device
• Industrial temperature range available; supports
demanding embedded applications
• For PCIe Gen3 applications, see the 5V41236
Key Specifications
• Cycle-to-cycle jitter < 100 ps
• Output-to-output skew < 50 ps
• PCIe Gen2 phase jitter < 3.0ps RMS
Block Diagram
3
SEL[2:0]
X1
25 MHz
crystal or
clock
X2
Optional tuning crystal
capacitors
Spread
Spectrum/
Output
clock
selection
Clock
Oscillator
VDD
2
PD
OE
Spread
Spectrum
Circuitry
PLL Clock
Synthesis
2
GND
Rr(IREF)
CLKOUTA
CLKOUTA
CLKOUTB
CLKOUTB
CLKOUTC
CLKOUTC
CLKOUTD
CLKOUTD
IDT® 4 OUTPUT PCIE GEN1/2 SYNTHESIZER
1
IDT5V41066 REV D 112211
