Low EMI Clock Generator

MDS 1707D F

2

Revision 102804

Integrated Circuit Systems, Inc.

MK1707D

Pin Assignment

Spread Selection Table (MHz)

0 = connect to GND

M = unconnected (floating) has internal resistor

network Leave it open (unconnected)

1 = connect to VDD

Pin Descriptions

X1/ICLK

VDD

GND

S1

CLK

S0

LEE

X2

1

2

3

4

8

7

6

5

8 pin (150 mil) SOIC

S1

Pin 7

S0

Pin 6

Spread

Direction

Spread (%)

Input

Frequency

0

0

Center

±1.15

25-54

0

M

Center

±0.95

25-54

0

1

Center

±1.9

50-108

1

0

Center

±1.6

25-54

1

M

Center

±1.9

25-54

1

1

Center

±0.6

50-108

Pin

Number

Pin

Name

Pin Type

Pin Description

1

X1/ICLK

Input

Crystal connection. Connect crystal or clock input.

2

VDD

Power

Connect to +3.3 V.

3

GND

Power

Connect to ground.

4

CLK

Output

Spread spectrum clock output per table above.

5

LEE

Input

Low EMI enable. Turns on spread spectrum when high. Internal pull-up

resistor. Disables the spread spectrum feature when low.

6

S0

Input

Function select input. Selects spread amount and direction per table above.

Internal mid-level.

7

S1

Input

Function select 1 input. Selects spread amount and direction per table

above. Internal mid-level.

8

X2

XO

Crystal connection. Leave unconnected for clock input.