June 2006
rev 0.1
DC Electrical Characteristics
( Test condition: All parameters are measured at -40°C to +85°C, 3.3V
±
0.3V , VSS =0V , unless otherwise stated)
ASM3P2187A/B
Symbol
V
IL
V
IH
I
IL
I
IH
I
XOL
I
XOH
V
OL
V
OH
I
CC
I
DD
VDD
t
ON
Z
OUT
C
IN
C
L
Input low voltage
Input high voltage
Input low current
Input high current
Parameter
Min
VSS – 0.3
2.0
-
-
-
-
VSS
VDD-0.5
Typ
-
-
-
-
3
3
-
-
TBD
TBD
Max
0.8
VDD+ 0.3
-35
+35
-
-
0.4
VDD
TBD
Unit
V
V
µA
µA
mA
mA
V
V
mA
uA
X
OUT
output low current ( V
XOL
@ 0.4V, VDD = 3.3V)
X
OUT
output high current ( V
XOH
@ 2.5V, VDD = 3.3V)
Output low voltage
Output high voltage
For ModOUT, I
OL
= 4mA
For REFOUT, I
OL
= 3mA
For ModOUT, I
OH
= -4mA
For REFOUT, I
OH
= -3mA
Dynamic supply current , TBD MHz Output, no load
Static supply current standby mode
Operating voltage
Power up time (first locked clock cycle after power up)
Clock output
impedance
For ModOUT
For REFOUT
3.3
-
-
-
-
-
-
-
3.3
2
TBD
TBD
-
-
-
-
3.6
5
-
-
16
15
15
7
V
mS
Ω
Ω
pF
pF
Input Capacitance, Ta=25°C, VDD=VIN=0V, f =1MHz
REFOUT
Load Capacitance
ModOUT
12.5MHz to 50MHz
12.5MHz to 50MHz
50MHz to 80MHz
AC Electrical Characteristics
( Test condition: All parameters are measured at -40°C to +85°C, 3.3V
±
0.3V , VSS =0V , unless otherwise stated)
Symbol
f
IN
f
OUT
t
LH
*
t
HL
*
t
JC
t
D
M
F
Input frequency
Output frequency
Parameter
ModOUT
REFOUT
Output rise time ( Measured from 0.8V to 2.0V )
Min
12.5
50
12.5
-
-
-
40
Typ
-
-
-
TBD
TBD
-
50
32.4
Max
20
80
20
-
-
TBD
60
Unit
MHz
MHz
nS
nS
pS
%
KHz
Output fall time ( Measured from 2.0V to 0.8V )
Jitter (Cycle to cycle), Ta=25°C and VDD=3.3V
No Load Capacitance
Output duty cycle
Modulation Frequency ,
Input Frequency =12.5MHz
*t
LH
and t
HL
are measured with a capacitive load of 15pF
Spread Spectrum Clock Generator for Mobile Applications
Notice: The information in this document is subject to change without notice.
4 of 9
PULSECORE [ PulseCore Semiconductor ]
