SY89430 View Datasheet(PDF) - Micrel

Part Name

Description

MFG CO.

SY89430

5V/3.3V PROGRAMMABLE FREQUENCY SYNTHESIZER (50MHz to 950MHz)

Micrel 

Micrel

BLOCK DIAGRAM

+3.3V

or

+5.0V

ClockWorks™

SY89430V

10-25MHz

Fundamental

Crystal

FREF

÷8

OSC

PHASE DETECTOR

PLL

VCO

÷M

400 – 950

MHz

PECL

÷N

FOUT

3 WIRE

INTERFACE

SERIAL

INTERFACE

LOGIC

PARALLEL

TEST

DETAILED BLOCK DIAGRAM

CONFIG INFO

4

10–25MHz

Fundamental

Crystal

5

28

S_LOAD

7

P_LOAD

27

S_DATA

26

S_CLOCK

150

0.47µF

3300pF

2

LOOP_FILTER

3

LOOP_REF

FREF

÷8

PHASE DETECTOR

XTAL1

OSC

XTAL2

9-BIT ÷ M

COUNTER

L = LATCH

H = Transparent

LATCH

+3.3V

or

+5.0V

1

VCC_QUIET

400 - 950

VCO

MHz

1

0

T110

÷N

(2,4,8,1)

LATCH

01

01

9-BIT SR

2-BIT SR

+3.3V

or

+5.0V

6, 21

VCC1

VCC_OUT

FOUT ÷ 4 — 7

S_CLOCK ÷ M — 6

LATCH LOW — 5

FOUT — 4

÷M— 3

FREF — 2

HIGH — 1

3-BIT SR

0

8 -> 16

9

M[8:0]

17,18

19,22

2

N[1:0]

NOTE:

Pin numbers reference PLCC pinout.

2

+3.3V

or

+5.0V

25

24 FOUT

23

FOUT

20

TEST

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