Datasheet > IMI4343YB

IMI4343YB

更新时间： 2024-11-08 23:58:39

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
7页	50K
描述
Phase/Frequency Detector

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IMI4343YB 数据手册

IMI4343

PHASE DETECTOR

June 1997

CMOS LSI

PLL FREQUENCY SYNTHESIZERS

PRODUCT DESCRIPTION

PRODUCT FEATURES

The IMI4343 is a member of a family of phase lock

loop synthesizer ICs from International Microcircuits.

This is a phase-frequency detector intended for use

with high reference frequencies. Compatible with

sinewave, ECL, TTL, and CMOS input waveforms,

makes the IMI4343 extremely versatile in PLL

applications.

Useful input frequency > 50 MHz

Low power consumption CMOS

-163 dBc/Hz total phase noise floor

No dead zone, by design

High gain differential outputs

380 µA Current Mode Charge Pump

Unambiguous PLL acquisition

Zero degree phase difference at lock

ECL compatible inputs when AC coupled

Sinewave inputs when AC coupled

TTL, CMOS inputs can be DC coupled

On-chip 3rd overtone reference oscillator

Small SO-8 package for SMT available

3-volt and 5-volt characterizations

The IMI4343 has a Type IV phase frequency detector

which has eliminated by design the inherent dead zone

which causes crossover distortion at the critical center

lock point. The IMI circuitry enables consistent low

noise loop designs using the simple single ended

charge pump output. Differential charge pump outputs

are also provided for those who require a more

sophisticated differential active loop filter design.

BLOCK DIAGRAM

VDD

PDout

OSCout 2

OSCin 1

PFD

PHIR

PHIV

Phase

Freq.

Detector

Fin

VSS

INTERNATIONAL MICROCIRCUITS, INC. 525 LOS COCHES ST.

MILPITAS, CA 95035 TEL: 408-263-6300 FAX 408-263-6571

Rev 1.1

6/9/97

Page 1 of 7

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