SY89429VZC datasheet(2/9 Pages) MICREL

Part #	SY89429VZC

Description	5V/3.3V PROGRAMMABLE FREQUENCY SYNTHESIZER 25MHz to 400MHz

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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2

ClockWorks™

SY89429V

Micrel

BLOCK DIAGRAM

DETAILED BLOCK DIAGRAM

NOTE:

Pin numbers reference PLCC pinout.

+3.3V

or

+5.0V

PHASE DETECTOR

PLL

÷ M

÷ 8

OSC

INTERFACE

LOGIC

SERIAL

PARALLEL

÷ N

FREF

PECL

FOUT

400 – 800MHz

TEST

CONFIG INFO

3 WIRE

INTERFACE

10-25MHz

Fundamental

Crystal

VCO

7

FOUT ÷ 4 —

S_CLOCK ÷ M —

LOW —

FOUT —

÷ M —

FREF —

HIGH —

+3.3V

or

+5.0V

PHASE DETECTOR

÷ 8

OSC

FREF

FOUT

VCO

400 - 800

MHz

LOOP_FILTER

LOOP_REF

VCC_QUIET

23

1

XTAL1

XTAL2

25

VCC_OUT

FOUT

24

23

LATCH

3-BIT SR

01

6, 21

8 -> 16

9

M[8:0]

17,18

N[1:0]

19,22

S_CLOCK

S_DATA

P_LOAD

S_LOAD

4

5

28

7

27

26

10–25MHz

Fundamental

Crystal

VCC1

÷ N

(2,4,8,16)

2

10

9-BIT ÷ M

COUNTER

LATCH

2-BIT SR

9-BIT SR

TEST

20

T110

+3.3V

or

+5.0V

+3.3V

or

+5.0V

150

3300pF

0.47µF

L = LATCH

H = Transparent

6

5

4

3

2

1

0

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SY89429VZC Datasheet(PDF) 2 Page - Micrel Semiconductor

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