ABE0121 查看數據表（PDF） - Abracon Corporation
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ABE0121 Datasheet PDF : 4 Pages
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2. DC/AC Specifications
ABE0121
Low EMI Spread Spectrum Multiplier Clock
PARAMETERS
Supply Voltage
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Output High Voltage
Output Low Voltage
Input Frequency
Maximum interruption of FIN
Input Capacitance
Pull-up Resistor
Pull-down Resistor
Short Circuit Current
3.3V Dynamic Supply Current
SYMBOL
VDD
VIH
VIL
IIH
IIL
VOH
VOL
FIN
Cin1
Rpu
Rpd
Isc
ICC
CONDITIONS
IOH=5mA, VDD =3.3V
IOL=6mA, VDD =3.3V
PIN 2, 3, 7
PIN 4
No Load
MIN.
2.97
0.7* VDD
2.4
24
TYP.
4
30
30
50
20
MAX.
3.63
0.3* VDD
100
100
0.4
200
100
UNITS
V
V
V
µA
µA
V
V
MHz
µs
pF
kΩ
kΩ
mA
mA
3. TIMING CHARACTERISTICS
PARAMETERS
Rise Time
Fall Time
Output Duty Cycle
Input to Output Delay
Cycle to Cycle Jitter
SYMBOL
CONDITIONS
Tr
Measured at 0.8V ~ 2.0V @ 3.3V
Tf
Measured at 2.0V ~ 0.8V @ 3.3V
DT
Tcyc-cyc Over output frequency range @ 3.3V
MIN.
0.8
0.78
45
2
TYP.
0.95
0.85
50
MAX.
1.1
0.9
55
4
100
UNITS
ns
ns
%
ns
ps
FUNCTIONAL DESCRIPTION
Selectable spread spectrum and modulation rates
The ABE0121 provides Center Spread modulation, as well as a selectable modulation magnitude. Selection is
made by connecting pins 2 (S2), 3 (S1) and 4 (S0) to a logical “zero” or “one”, according to the modulation
magnitude selection table on page 1.
Default values for S(0:3) through internal pull-up and pull-down resistor
Selection pin 4 (S0) has an internal pull-down resistor of 30kΩ while pins 2, 3 and 7 (S2, S1 and S3) have an
internal pull-up resistor of 30kΩ. This internal pull-down (or pull-up) resistor will pull the input value to a logical
“zero” (or “one” respectively) by default, i.e. when no connection is made between the pin and VDD (GND
respectively). In order to override the internal pull-down (pull-up), the pin has to be connected to VDD (GND
respectively).
30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 3
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