Integrated
Circuit
Systems, Inc.
ICS8442
700MH
Z
, C
RYSTAL
O
SCILLATOR
-
TO
-D
IFFERENTIAL
LVDS F
REQUENCY
S
YNTHESIZER
P
ARAMETER
M
EASUREMENT
I
NFORMATION
V
DD
out
➤
SCOPE
Qx
3.3V±5%
Power Supply
Float GND
+
-
DC Input
LVDS
out
➤
LVDS
nQx
➤
V
OS
/∆ V
OS
3.3V O
UTPUT
L
OAD
T
EST
C
IRCUIT
V
DD
➤
V
OS
/
∆
VOS
S
ETUP
nFOUTx
out
FOUTx
DC Input
LVDS
➤
nFOUTy
FOUTy
100
V
OD
/∆ V
OD
out
➤
t
sk(o)
VOD /
∆
VOD
S
ETUP
nFOUT0,
nFOUT1
FOUT0,
FOUT1
O
UTPUT
S
KEW
V
OH
V
REF
t
cycle
n
➤
t
jit(cc) =
t
cycle n –
t
cycle n+1
1000 Cycles
Cycle-to-Cycle Jitter
nFOUT0, nFOUT1
FOUT0, FOUT1
Pulse Width
t
PERIOD
odc =
odc & t
P
ERIOD
8442AY
➤
➤
t
cycle n+1
➤
1σ contains 68.26% of all measurements
2σ contains 95.4% of all measurements
3σ contains 99.73% of all measurements
4σ contains 99.99366% of all measurements
6σ contains (100-1.973x10
-7
)% of all measurements
V
OL
Reference Point
(Trigger Edge)
Histogram
Mean Period
(First edge after trigger)
Period Jitter
80%
Clock
Outputs
80%
V
SW I N G
20%
t
R
t
F
20%
t
PW
t
PERIOD
O
UTPUT
R
ISE
/F
ALL
T
IME
www.icst.com/products/hiperclocks.html
7
REV. C JULY 8, 2004
ICSI [ INTEGRATED CIRCUIT SOLUTION INC ]
