ICS91857 Datasheet, PDF (9/14 Pages) Integrated Circuit Systems – Value SSTL_2 Clock Driver (60MHz - 220MHz)

ICS91857
Parameter Measurement Information
V_DD
V(CLKC)
R = 60Ω
0494C—08/15/05
VDD/2
ICS91857
R = 60Ω VDD/2
ICS91857
V(CLKC)
GND
Figure 1. IBIS Model Output Load
Z = 60Ω
C = 14 pF _-VDD/2
R = 10Ω Z = 50Ω
Z = 60Ω
R = 10Ω Z = 50Ω
SCOPE
R = 50Ω
V(TT)
C = 14 pF
-VDD/2
-VDD/2
NOTE: V(TT) _{= GND}
Figure 2. Output Load Test Circuit
R = 50Ω
V(TT)
Y_X, FBOUTC
Y_X, FBOUTT
tc(n)
tc(n+1)
tjit(cc) = tc(n) ± tc(n+1)
Figure 3. Cycle-to-Cycle Jitter
9