Integrated
Circuit
Systems, Inc.
ICS840002I
F
EMTO
C
LOCKS
™ C
RYSTAL
-
TO
-
LVCMOS/LVTTL F
REQUENCY
S
YNTHESIZER
P
ARAMETER
M
EASUREMENT
I
NFORMATION
1.65V±5%
2.05V±5% 1.25V±5%
V
DD
,
V
DDA
, V
DDO
SCOPE
Qx
V
DD
,
V
DDA
SCOPE
V
DDO
GND
Qx
LVCMOS
GND
LVCMOS
-1.65V±5%
-1.25V±5%
3.3V C
ORE
/3.3V O
UTPUT
L
OAD
AC T
EST
C
IRCUIT
1.25V±5%
3.3V C
ORE
/2.5V O
UTPUT
L
OAD
AC T
EST
C
IRCUIT
Phase Noise Plot
V
DD
,
V
DDA
, V
DDO
SCOPE
Qx
Noise Power
Phase Noise Mask
LVCMOS
GND
f
1
Offset Frequency
f
2
-1.25V±5%
RMS Jitter = Area Under the Masked Phase Noise Plot
2.5V C
ORE
/2.5V O
UTPUT
L
OAD
AC T
EST
C
IRCUIT
V
DDO
RMS P
HASE
J
ITTER
80%
20%
t
R
t
F
80%
20%
Qx
2
V
DDO
Clock
Outputs
Qy
2
t
sk(o)
O
UTPUT
S
KEW
V
DDO
O
UTPUT
R
ISE
/F
ALL
T
IME
Q0, Q1
Pulse Width
t
2
PERIOD
odc =
t
PW
t
PERIOD
O
UTPUT
D
UTY
C
YCLE
/P
ULSE
W
IDTH
/P
ERIOD
840002AGI
www.icst.com/products/hiperclocks.html
8
REV. A MARCH 10, 2005
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
