Datasheet > ADF4218BCHIPS

ADF4218BCHIPS

更新时间： 2024-11-04 21:19:43

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
10页	149K
描述
IC PLL FREQUENCY SYNTHESIZER, 2500 MHz, UUC, DIE, PLL or Frequency Synthesis Circuit

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ADF4218BCHIPS 数据手册

Preliminary Technical Data

Dual PLL Frequency Synthesizer

ADF4216/ADF4217/ADF4218

FEATURES

GE NE RAL D E SC RIP T IO N

ADF4216:

ADF4217:

ADF4218:

+2.7 V to +5.5 V Pow er Supply

Selectable Charge Pum p Currents

Selectable Dual Modulus Prescaler

3-Wire Serial Interface

550MHz/ 1.2GHz

550MHz/ 2.0GHz

550MHz/ 2.5GHz

T he ADF4216/ADF4217/ADF4218 is a dual frequency

synthesizer which can be used to implement local oscil-

lators in the up-conversion and down-conversion sec-

tions of wireless receivers and transmitters. T hey can

provide the LO for both the RF and IF sections. T hey

consist of a low-noise digital PFD (Phase Frequency

Detector), a precision charge pump, a programmable

reference divider, programmable A and B counters and a

dual-modulus prescaler (P/P+1). T he A (6-bit) and B

(11-bit) counters, in conjunction with the dual modulus

prescaler (P/P+1), implement an N divider (N= BP+A).

In addition, the 14-bit reference counter (R Counter),

allows selectable REFIN frequencies at the PFD input.

A complete PLL (Phase-Locked Loop) can be imple-

mented if the synthesizers are used with an external loop

filter and VCO's (Voltage Controlled Oscillators)

Pow er Dow n Mode

APPLICATIONS

Portable Wireless Com m unications (PCS/ PCN, Cordless)

Cordless and Cellular Telephone System s

Wireless Local Area Netw orks (WLANs)

Cable TV Tuners (CATV)

Pagers

Control of all the on-chip registers is via a simple 3-wire

interface.

T he devices operate with a 3V ( ± 10%) or 5V( ± 10%)

power supply and can be powered down when not in

use.

FUNCTIO NAL BLO CK D IAGRAM

V 2

ADF4216/ADF4217/ADF4218

SWALLOW

CONTROL

17-B IT IF

N -COUNTER

IF_IN

PR ESC ALE

IF_IN

CHARGE

PUMP

PH A S

C OM P A R A TOR

14-BIT IF

R-C OUNTER

LOCK

DETECT

OSCILLATOR

REF_IN

OUTPUT

M UX

MUXOUT

CLOCK

DATA

22-BIT

DAT A

SDOUT

LOCK

DETECT

17-BIT R F

N-C OUNTER

RF_INA

RF _INB

R F

PRESC ALE

CHARGE

PU MP

14-BIT RF

R-C OUNTER

PH A S

C OM P A R A TOR

SWALLOW

CONTROL

DGND

AGND

DGND

AGND

REV.PrD 7/99

Inform ation furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assum ed by Analog Devices for its use, nor for any

infringem ents of patents or other rights of third parties which m ay result from its use.

No license is granted by im plication or otherwise under any patent or patent rights of

Analog Devices.

One Technology Way, P.O. Box 9106, Norw ood, MA 02062-9106, U.S.A.

Tel: 781-329-4700 Fax: 781-326-8703

12 3 4 5 6 7...10

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与ADF4218BCHIPS相关器件

型号	品牌	获取价格	描述	数据表
ADF4218BRU	ADI	获取价格	Dual RF PLL Frequency Synthesizers
ADF4218BRU-REEL	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20, TSSOP-20, PLL or Frequency Synthesis Circu
ADF4218BRU-REEL7	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20, TSSOP-20, PLL or Frequency Synthesis Circu
ADF4218L	ADI	获取价格	Dual Low Power Frequency Synthesizers
ADF4218L_15	ADI	获取价格	Dual Low Power Frequency Synthesizers
ADF4218LBCC	ADI	获取价格	暂无描述
ADF4218LBRU	ROCHESTER	获取价格	PLL FREQUENCY SYNTHESIZER, 3000 MHz, PDSO20, MO-153AC, TSSOP-20
ADF4218LBRU-REEL	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 3000 MHz, PDSO20, MO-153AC, TSSOP-20, PLL or Frequency Synth
ADF4218LBRU-REEL7	ADI	获取价格	IC PLL FREQUENCY SYNTHESIZER, 3000 MHz, PDSO20, MO-153AC, TSSOP-20, PLL or Frequency Synth
ADF4218LBRU-REEL7	ROCHESTER	获取价格	PLL FREQUENCY SYNTHESIZER, 3000 MHz, PDSO20, MO-153AC, TSSOP-20

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