ICS8431-11 Datasheet, PDF (6/13 Pages) Integrated Circuit Systems – 255MHZ, LOW JITTER, LVPECL FREQUENCY SYNTHESIZER

Integrated
Circuit
Systems, Inc.
ICS8431-11
255MHZ, 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
FOUT
nFOUT
tcycle n
➤
tcycle n+1
➤
t jit(cc) = tcycle n –tcycle n+1
FIGURE 2 — CYCLE-TO-CYCLE JITTER
nFOUT
FOUT
Pulse Width (t )
PW
t
odc =
PW
t
PERIOD
t
PERIOD
FIGURE 3 — odc & tPERIOD
ICS8431CM-11
www.icst.com/products/hiperclocks.html
6
REV. A JULY 11, 2001