ICS8430-62 Datasheet

500MHz CRYSTAL-TO-3.3V, 2.5V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER

ICS8430AY-62 REVISION A JULY 2, 2009

15

©2009 Integrated Device Technology, Inc.

Schematic Example

The schematic of the ICS8430-62 layout example used in this layout

guideline is shown in Figure 7A. The ICS8430-62 recommended

PCB board layout for this example is shown in Figure 7B. This layout

example is used as a general guideline. The layout in the actual

system will depend on the selected component types, the density of

the components, the density of the traces, and the stack up of the P.C.

board.

Figure 7A. ICS8430-62 Schematic of Recommended Layout

R4

84

X1

C11

0.01u

R3

125

Zo = 50 Ohm

Zo = 50 Ohm

C1

C15

0.1u

R1

125

R7

10

C16

10u

C14

0.1u

+

-

R2

84

C2

VCC

U1

M5

1

M6

2

M7

3

M8

4

N0

5

N1

6

N2

7

VEE

8

MR

17

S_CLOCK

18

S_DATA

19

S_LOAD

20

VCCA

21

XTAL_SEL

22

REF_CLK

23

XTAL_OUT

24

VCC

VCC

VCCA

RU1

1K

RD1

SP

VCC

RU2

SP

RD2

1K

VCC

To Logic

Input

pins

Set Logic

Input to '0'

Set Logic

Input to '1'

Logic Input Pin Examples

To Logic

Input

pins

SP = Spare Pads

VCC=3.3V