ICS7151A Datasheet, PDF (2/8 Pages) Integrated Circuit Systems – Spread Spectrum Clock Generator

ICS7151A-50
Spread Spectrum Clock Generator
Pin Assignment
XIN 1
GND 2
S0 3
S1 4
8 XOUT
7 VDD
6 ENS
5 CKOUT
8 pin (150 mil) SOIC
Pin Descriptions
Spread Direction and Percentage
Select Table
S1
Pin 4
S0
Pin 3
0
0
0
1
1
0
1
1
ENS
(note 1)
0
1
Spread
Direction
Spread
Percentage (%)
Center
±1.5
Center
±0.5
Down
-1.0
Down
-3.0
Modulation
No Modulation
Modulation
Notes:
1. Pin 1 has a pull-up resistor.
Pin
Number
1
2
3
4
5
6
7
8
Pin
Name
XIN
GND
S0
S1
CKOUT
ENS
VDD
XOUT
Pin Type
Pin Description
Input Crystal pin/clock input pin.
Power Connect to ground.
Input Select pin 0. Spread modulation select.
Input Select pin 1. Spread modulation select.
Output Clock output.
Input Modulation enable. Internal pull-up resistor.
Power Connect to +3.3 V.
Output Crystal connection pin.
MDS 7151A-50 A
2
Revision 102005
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