ICS601-25
L
OW
P
HASE
N
OISE
1
TO
5 C
LOCK
M
ULTIPLIER
External Components
The ICS601-25 requires a minimum number of external components for proper operation. Decoupling
capacitors of 0.01
µF
and 0.1
µF
should be connected between VDD and GND, as close to the part as
possible. A 33Ω series terminating resistor should be used on each clock output. The crystal must be
connected as close to the chip as possible. The crystal should be fundamental mode, parallel resonant. Do
not use third overtone. For exact tuning when using a crystal, capacitors should be connected from pins X1
to ground and X2 to ground. In general, the value of these capacitors is given by the following equation,
where CL is the crystal load capacitance: Crystal caps (pF) = (CL-5) x 2. So for a crystal with 16 pF load
capacitance, two 22 pF caps can be used. For any given board layout, ICS can measure the board
capacitance and recommend the exact capacitance value to use.
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS601-25. These ratings,
which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of
the device at these or any other conditions above those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can
affect product reliability. Electrical parameters are guaranteed only over the recommended operating
temperature range.
Item
Supply Voltage, VDD
All Inputs and Outputs
Ambient Operating Temperature, Commercial version
Ambient Operating Temperature, Industrial version
Storage Temperature
Junction Temperature
Soldering Temperature
7V
Rating
-0.5 V to VDD+0.5 V
0 to +70
°C
-40 to +85
°C
-65 to +150
°C
125
°C
260
°C
Recommended Operation Conditions
Parameter
Ambient Operating Temperature (commercial)
Ambient Operating Temperature (industrial)
Power Supply Voltage (measured in respect to GND)
Min.
0
-40
+2.97
Typ.
Max.
+70
+85
+3.63
Units
°C
°C
V
DC Electrical Characteristics
VDD=3.3 V ±10%
, Ambient temperature -40 to +85°C
Parameter
Operating Voltage
Input High Voltage
Input Low Voltage
Symbol
VDD
V
IH
V
IL
Conditions
X1/ICLK pin only
X1/ICLK pin only
Min.
2.97
VDD/2+1
Typ.
Max.
3.63
VDD/2-1
Units
V
V
V
MDS 601-25 C
In te grated Circuit Systems
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ICS [ INTEGRATED CIRCUIT SYSTEMS ]
