November 2006
rev 1.3
AC Electrical Characteristics
Parameter
Rise Time*
ASM3P2853A
Symbol
t
r
Conditions/ Description
Measured from 20% to 80% of the
signal level
Measured from 80% to 20% of the
Min
-
Typ
2
Max
-
Unit
nS
Fall Time*
Jitter
(Cycle to Cycle)
Jitter
(Period)
Clock Duty Cycle
t
f
signal level
-
1.5
-
nS
t
jc
t
p
Ratio of pulse width (as measured from
t
d
rising edge to next falling edge at
V
DD
/2) to one clock period
-
-
250
175
-
-
pS
pS
45
50
55
%
*
C
L
= 15 pF, Input clock frequency = 25MHz
Typical Application Schematic using ASM3P2853A Device
25MHz
fundamental
Crystal
1
XIN
XOUT
V
DD
50MHz
USB Clock
SSONB
8
7
6
5
Modulated 50MHz output
Un-modulated 48MHz output
27pF
2
27pF
3
4
+2.5V
0.1uF
V
SS
PWDNB
ASM3P2853A
Peak EMI Reducing Solution
Notice: The information in this document is subject to change without notice.
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PULSECORE [ PulseCore Semiconductor ]
