參數(shù)資料
型號: ADF4154BCPZ-RL7
廠商: Analog Devices Inc
文件頁數(shù): 1/24頁
文件大?。?/td> 0K
描述: IC FRACTION-N FREQ SYNTH 20LFCSP
標準包裝: 1,500
類型: 分數(shù) N 合成器(RF)
PLL:
輸入: CMOS,TTL
輸出: 時鐘
電路數(shù): 1
比率 - 輸入:輸出: 2:1
差分 - 輸入:輸出: 是/無
頻率 - 最大: 4GHz
除法器/乘法器: 無/是
電源電壓: 2.7 V ~ 3.3 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 20-LFCSP-VQ
包裝: 帶卷 (TR)
配用: EVAL-ADF4154EBZ1-ND - BOARD EVALUATION FOR ADF4154EB1
Fractional-N Frequency Synthesizer
Data Sheet
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2004–2012 Analog Devices, Inc. All rights reserved.
FEATURES
RF bandwidth to 4 GHz
2.7 V to 3.3 V power supply
Separate VP allows extended tuning voltage
Programmable dual-modulus prescaler 4/5, 8/9
Programmable charge pump currents
3-wire serial interface
Digital lock detect
Power-down mode
Pin compatible with the ADF4110/ADF4111/
Programmable modulus on fractional-N synthesizer
Trade-off noise vs. spurious performance
Fast-lock mode with built-in timer
Loop filter design possible with ADIsimPLL
APPLICATIONS
Base stations for mobile radio (WiMAX, PHS, GSM, PCS, DCS,
CDMA, PMR, W-CDMA, supercell 3G)
Wireless handsets (PMR, GSM, PCS, DCS, CDMA, WCDMA)
CATV equipment
Wireless LANs
Communications test equipment
GENERAL DESCRIPTION
The ADF4154 is a fractional-N frequency synthesizer that
implements local oscillators in the up conversion and down
conversion sections of wireless receivers and transmitters. It
consists of a low noise digital phase frequency detector (PFD),
a precision charge pump, and a programmable reference divider.
There is a Σ-Δ based fractional interpolator to allow programmable
fractional-N division. The INT, FRAC, and MOD registers define
an overall N-divider (N = (INT + (FRAC/MOD))). In addition,
the 4-bit reference counter (R-counter) allows selectable REFIN
frequencies at the PFD input. A complete phase-locked loop (PLL)
can be implemented if the synthesizer is used with an external
loop filter and a voltage-controlled oscillator (VCO).
A key feature of the ADF4154 is the fast-lock mode with a built-
in timer. The user can program a predetermined countdown
time value so that the PLL remains in wide bandwidth mode,
instead of the user having to control this time externally.
Control of all on-chip registers is via a simple 3-wire interface.
The device operates with a power supply ranging from 2.7 V to
3.3 V and can be powered down when not in use.
FUNCTIONAL BLOCK DIAGRAM
LOCK
DETECT
FAST-LOCK
SWITCH
N COUNTER
CP
RFCP3 RFCP2 RFCP1
REFERENCE
DATA
LE
24-BIT
DATA
REGISTER
CLOCK
REFIN
AVDD
AGND
VDD
DGND
RDIV
NDIV
DGND
CPGND
DVDD VP SDVDD
RSET
RFINA
RFINB
OUTPUT
MUX
MUXOUT
+
HIGH Z
PHASE
FREQUENCY
DETECTOR
ADF4154
THIRD ORDER
FRACTIONAL
INTERPOLATOR
MODULUS
REG
FRACTION
REG
INTEGER REG
CURRENT
SETTING
×2
DOUBLER
4-BIT
R COUNTER
CHARGE
PUMP
04833-
001
Figure 1.
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ADF4154BRU-REEL7 功能描述:IC FRACTION-N FREQ SYNTH 16TSSOP RoHS:否 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器,PLL,頻率合成器 系列:- 標準包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML,PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤,16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?(3x3) 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
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