ICS662-03

HDTV AUDIO/VIDEO CLOCK SOURCE

CLOCK SYNTHESIZER

IDT™ / ICS™ HDTV AUDIO/VIDEO CLOCK SOURCE

3

ICS662-03

REV E 101807

Application Information

Series Termination Resistor

Clock output traces should use series termination. To series

terminate a 50

Ωtrace (a commonly used trace impedance),

place a 33

Ωresistor in series with the clock line, as close to

the clock output pin as possible. The nominal impedance of

the clock output is 20

Ω.

Decoupling Capacitors

As with any high performance mixed-signal IC, the

ICS662-03 must be isolated from system power supply

noise to perform optimally.

Decoupling capacitors of 0.01µF must be connected

between VDD (pin 2) and the PCB ground plane (pin 3).

PCB Layout Recommendations

For optimum device performance and lowest output phase

noise, the following guidelines should be observed.

1) Each 0.01µF decoupling capacitor should be mounted on

the component side of the board as close to the VDD pin as

possible. No vias should be used between decoupling

capacitor and VDD pin. The PCB trace to VDD pin should

be kept as short as possible, as should the PCB trace to the

ground via. Distance of the ferrite bead and bulk decoupling

from the device is less critical.

2) To minimize EMI and obtain the best signal integrity, the

33

Ω series termination resistor should be placed close to

the clock output.

3) An optimum layout is one with all components on the

same side of the board, minimizing vias through other signal

layers (the ferrite bead and bulk decoupling capacitor can be

mounted on the back). Other signal traces should be routed

away from the ICS662-03. This includes signal traces just

underneath the device, or on layers adjacent to the ground

plane layer used by the device.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS662-03. 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.

Recommended Operation Conditions

Item

Rating

Supply Voltage, VDD

5.5 V

All Inputs and Outputs

-0.5 V to VDD+0.5 V

Ambient Operating Temperature

0 to +70

° C

Storage Temperature

-65 to +150

° C

Junction Temperature

125

° C

Soldering Temperature

260

° C

Parameter

Min.

Typ.

Max.

Units

Ambient Operating Temperature

0

+70

° C

Power Supply Voltage (measured in respect to GND)

+3.0

+3.6

V