February 2007

P1817A/B

rev 1.1

Low-Power Mobile VGA EMI Reduction IC

4 of 10

Notice: The information in this document is subject to change without notice.

Schematic for Notebook VGA Application

Note: To set the P1817 to standby mode, disable the input clock (pin 1 CLKIN) and pull SSON (pin 5) low. Refer Standby Mode Selection

Table.

Pin 8 can be tied either high or low,

or it can be left unconnected.

Tie SR0 and SR1 high/low

according to spread range desired.

External resistors are not needed to

pull these pins high.

Pin 5 SSON should be left unconnected to turn on

spread spectrum. Pull this pin low to turn spread

spectrum OFF and enable stand-by mode.

60MHz to 175MHz pixel clock input

from VGA chip

FB

VDD

0.1µF

1

2

4

3

8

7

5

6

CLKIN

VDD

VSS

ModOUT

SSON

SR1

SR0

NC

P1817