ICS674-01

USER CONFIGURABLE DIVIDER

CLOCK DIVIDER

IDT™ / ICS™ USER CONFIGURABLE DIVIDER

4

ICS674-01

REV H 051310

Using the ICS674-01 with the ICS673-01:

The ICS674-01 may be used with the ICS673-01 to build a frequency synthesizer. The following example shows a typical

application when the reference clock is in the MHz range:

If the reference is in the kHz range, for example 8 kHz, the following configuration may be more typical:

Note that in both examples, Divide B is connected to the output of the ICS673. This is because Divide B has a higher

operating frequency than Divide A.

Reference Clock

Ouput Clock

Divide A

Post

Divide

ICS674-01

Divide B

ICS673-01

REFIN

FBIN

CLK1

CLK2

Reference Clock

Ouput Clock

Post

Divide

ICS674-01

Divide B

ICS673-01

REFIN

FBIN

CLK1

CLK2

Divide A