ICS9DB202
Integrated
Circuit
Systems, Inc.
PCI EXPRESS
™
JITTER
ATTENUATOR
PARAMETER MEASUREMENT INFORMATION
3.3V 5ꢀ
VDD
nCLK
CLK
SCOPE
VDD,
VDDA
VPP
VCMR
Cross Points
Qx
HCSL
GND
GND
0V
3.3V HCSL OUTPUT LOAD AC TEST CIRCUIT
DIFFERENTIAL INPUT LEVEL
PCIEXC0,
PCIEXC1
PCIEXCx
PCIEXTy
PCIEXT0,
PCIEXT1
➤
➤
tcycle n
tcycle n+1
➤
➤
PCIEXCx
tjit(cc) = tcycle n –tcycle n+1
1000 Cycles
PCIEXTy
tsk(o)
OUTPUT SKEW
CYCLE-TO-CYCLE JITTER
PCIEXC0,
PCIEXC1
80ꢀ
tF
80ꢀ
tR
PCIEXT0,
PCIEXT1
VSWING
20ꢀ
Pulse Width
Clock
Outputs
20ꢀ
tPERIOD
tPW
odc =
tPERIOD
HCSL OUTPUT RISE/FALL TIME
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
9DB202CG
www.icst.com/products/hiperclocks.html
REV. A OCTOBER 6, 2004
6