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IDT5V40501
LOCO PLL CLOCK MULTIPLIER
CLOCK MULTIPLIER
IDT LOCO PLL CLOCK MULTIPLIER
3
IDT5V40501
REV C 102808
External Components
Decoupling Capacitor
As with any high-performance mixed-signal IC, the
IDT5V40501 must be isolated from system power supply
noise to perform optimally.
A decoupling capacitor of 0.01F must be connected
between VDD and the GND. It must be connected close to
the IDT5V40501 to minimize lead inductance. No external
power supply filtering is required for the IDT5V40501.
Series Termination Resistor
A 33
terminating resistor can be used next to the CLK pin
for trace lengths over one inch.
Crystal Load Capacitors
The total on-chip capacitance is approximately 12 pF. A
parallel resonant, fundamental mode crystal should be
used. The device crystal connections should include pads
for small capacitors from X1 to ground and from X2 to
ground. These capacitors are used to adjust the stray
capacitance of the board to match the nominally required
crystal load capacitance. Because load capacitance can
only be increased in this trimming process, it is important to
keep stray capacitance to a minimum by using very short
PCB traces (and no vias) between the crystal and device.
Crystal capacitors, if needed, must be connected from each
of the pins X1 and X2 to ground.
The value (in pF) of these crystal caps should equal (CL -12
pF)*2. In this equation, CL= crystal load capacitance in pF.
Example: For a crystal with a 16 pF load capacitance, each
crystal capacitor would be 8 pF [(16-12) x 2 = 8].
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the IDT5V40501. These ratings, which
are standard values for IDT 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.
Recommended Operation Conditions
Item
Rating
Supply Voltage, VDD
7 V
All Inputs and Outputs
-0.5 V to VDD+0.5 V
Ambient Operating Temperature
-40 to +85
° C
Storage Temperature
-65 to +150
° C
Soldering Temperature
260
° C
Parameter
Min.
Typ.
Max.
Units
Ambient Operating Temperature (commercial)
0
+70
° C
Ambient Operating Temperature (industrial)
-40
85
° C
Power Supply Voltage (measured in respect to GND)
+3.135
3.3
+3.465
V
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