ICS670-01

Low Phase Noise Zero Delay Buffer and Multiplier

MDS 670-01 B

2

Revision 100900

Printed 11/15/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel•http://www.icst.com

Pin Descriptions

Pin Assignment

ICS670-01

0=connect directly to ground

1=connect directl to VDD

S3

S2

S1

S0

CLK2 (and FBCLK)

Input Range (MHz)

0000

Low (Power down entire chip)

-

0001

Input x1.333

18 - 120

0010

Input x6

5 - 26.67

0011

Input x1.5

16.67 - 107

0100

Input x3.333

7.5 - 48

0101

Input x2.50

10 - 64

0110

Input x4

6 - 40

0111

Input x1

25 - 160

1000

Input x2.333

11 - 69

1001

Input x2.666

10 - 60

1010

Input x12

5 - 13.33

1011

Input x3

8 - 53.33

1100

Input x10

5 - 16

1101

Input x5

6 - 32

1110

Input x8

5 - 20

1111

Input x2

12 - 80

Multiplier Select Table

1

8

9

16

2

3

4

5

6

7

10

11

12

13

14

15

S2

GND

GND

S0

S1

OE1

FBCLK

VDD

VDD

VDD

FBIN

S3

GND

ICLK

CLK2

OE2

Key: I = Input with internal pull-up resistor; O = output; P = power supply connection; CI = clock input.

Number

Name

Type

Description

1

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

2

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

3

VDD

P

Connect to +3.3V or +5V. Must match other VDDs.

4

CLK2

O

Clock output from VCO. Output frequency equals the input frequency times multiplier.

5

OE2

I

Output clock enable 2. Tri-states the clock 2 output when low.

6

FBCLK

O

Clock ouput from VCO. Output frequency equals the input frequency times multiplier.

7

OE1

I

Output clock enable 1. Tri-states the feedback clock output when low.

8

FBIN

CI

Feedback clock input.

9

ICLK

CI

Clock input. Connect to a 5 - 160 MHz clock.

10

S3

I

Multiplier select pin 3. Determines outputs per table above. Internal pull-up.

11

S2

I

Multiplier select pin 2. Determines outputs per table above. Internal pull-up.

12

S1

I

Multiplier select pin 1. Determines outputs per table above. Internal pull-up.

13

S0

I

Multiplier select pin 0. Determines outputs per table above. Internal pull-up.

14

GND

P

Connect to ground.

15

GND

P

Connect to ground.

16

GND

P

Connect to ground.