Datasheet > SY89429A_09

SY89429A_09

更新时间： 2024-09-30 08:56:35

品牌	Logo	应用领域
麦瑞 - MICREL		/
页数	文件大小	规格书
9页	514K
描述
PROGRAMMABLE FREQUENCY SYNTHESIZER (25MHz to 400MHz)

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数据手册

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SY89429A_09 数据手册

Precision Edge^®

SY89429A

Precision Edge^®

PROGRAMMABLE

FREQUENCY SYNTHESIZER

(25MHz to 400MHz)

Micrel, Inc.

SY89429A

FEATURES

n Improved jitter performance over SY89429

n 25MHz to 400MHz differential PECL outputs

n ±25ps peak-to-peak output jitter

n Minimal frequency over-shoot

n Synthesized architecture

Precision Edge^®

DESCRIPTION

The SY89429A is a general purpose, synthesized clock

source targeting applications that require both serial and

parallel interfaces. Its internal VCO will operate over a range

offrequenciesfrom400MHzto800MHz.ThedifferentialPECL

output can be conﬁgured to be the VCO frequency divided by

2, 4, 8 or 16. With the output conﬁgured to divide the VCO

frequencyby2, andwitha16MHzexternalquartzcrystalused

to provide the reference frequency, the output frequency can

be speciﬁed in 1MHz steps.

n Serial 3 wire interface

n Parallel interface for power-on

n Internal quartz reference oscillator driven by quartz

crystal or PECL source

n PECL output can operate with either +3.3V or +5V

VCC_OUT power supply

nꢀ Externalꢀloopꢀﬁlterꢀoptimizesꢀperformance/cost

n Applications note (AN-06) for ease of design-ins

n Available in PLCC and SOIC 28-pin packages

PIN CONFIGURATION

M[0]

M[1]

M[2]

M[3]

M[4]

M[5]

M[6]

M[7]

M[8]

28 /P_LOAD

27 VCC1

24 23 22 21 20 19

26 XTAL2

S_CLOCK

S_DATA

N[1]

N[0]

M[8

M[7

M[6

M[5

M[4

25 XTAL1

S_LOAD

24 LOOP_REF

23 LOOP_FILTER

22 VCC_QUIET

21 S_LOAD

20 S_DATA

19 S_CLOCK

18 VCC_OUT

17 FOUT

PLCC

TOP VIEW

VCC_QUIET

LOOP_FILTER

LOOP_REF

XTAL1

SOIC

TOP VIEW

10 11

N[0] 10

N[1] 11

GND (TTL) 12

TEST 13

16 /FOUT

VCC (TTL) 14

15 GND

APPLICATIONS

n Workstations

n Advanced communications

n High end consumer

n High-performance computing

n RISC CPU clock

n Graphics pixel clock

n Test equipment

n Other high-performance processor-based

applications

Precision Edge is a registered trademark of Micrel, Inc.

Rev.: K

Amendment: /0

Issue Date: July 2009

12 3 4 5 6 7...9

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