Integrated
Circuit
Systems, Inc.
ICS8431-01
200MHZ, LOW JITTER,
LVPECL FREQUENCY SYNTHESIZER
PARAMETER MEASUREMENT INFORMATION
80%
80%
Clock Inputs
and Outputs
20%
➤ trise
Vswing
20%
tfall
➤
FIGURE 1 — INPUT AND OUTPUT SLEW RATES
X_CLK, 1X_FOUT
nX_CLK, n1X_FOUT
tcycle n
➤
tcycle n+1
➤
t jit(cc) = tcycle n –tcycle n+1
FIGURE 2 — CYCLE-TO-CYCLE JITTER
nX_CLK, n1X_FOUT
X_CLK, 1X_FOUT
Pulse Width (t pw) ➤
t PERIOD
➤
odc
=
tpw
tPERIOD
FIGURE 3 — odc & tPERIOD
ICS8431CM-01
www.icst.com/products/hiperclocks.html
5
REV. A JUNE 5, 2001