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參數(shù)資料
| 型號： | EVAL-ADF4154EB1 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 通信、網(wǎng)絡(luò)模塊及開發(fā)工具 |
| 英文描述： | Fractional-N Frequency Synthesizer |
| 中文描述： | 分數(shù)N頻率合成器 |
| 文件頁數(shù)： | 1/20頁 |
| 文件大小： | 470K |
| 代理商： | EVAL-ADF4154EB1 |
Fractional-N Frequency Synthesizer
ADF4154
FEATURES
RF bandwidth 500 MHz to 4 GHz
2.7 V to 3.3 V power supply
Separate V
P
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/
ADF4112/ADF4113, ADF4106 and ADF4153
Programmable modulus on fractional-N synthesizer
Trade-off noise versus spurious performance
Fast-lock mode with built-in timer
Rev.
0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
APPLICATIONS CATV equipment
Base stations for mobile radio (GSM, PCS, DCS,
CDMA, WCDMA)
Wireless handsets (GSM, PCS, DCS, CDMA, WCDMA)
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 program-
mable fractional-N division. The INT, FRAC, and MOD regis-
ters define an overall N divider (N = (INT + (FRAC/MOD))).
In addition, the 4-bit reference counter (R counter) allows
selectable REF
IN
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 count-down
time value so that the PLL will remain in wide bandwidth mode,
instead of 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
AV
DD
DV
DD
V
P
SDV
DD
LOCK
DETECT
FAST-LOCK
SWITCH
N COUNTER
CP
RFCP3 RFCP2 RFCP1
REFERENCE
DATA
LE
24-BIT
DATA
REGISTER
CLOCK
REF
IN
AGND
V
DD
DGND
V
DD
R
DIV
N
DIV
DGND
CPGND
R
SET
RF
IN
A
RF
IN
B
OUTPUT
MUX
MUXOUT
–
+
HIGH Z
PHASE
FREQUENCY
DETECTOR
ADF4154
THIRD ORDER
FRACTIONAL
INTERPOLATOR
MODULUS
REG
FRACTION
REG
INTEGER REG
P = 4/5 OR 8/9
B = 9 BITS; A = 3 BITS
CURRENT
SETTING
×
2
DOUBLER
4-BIT
R COUNTER
CHARGE
PUMP
0
Figure 1.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| EVAL-ADF4154EBZ1 | 功能描述:BOARD EVALUATION FOR ADF4154EB1 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-ADF4156EBZ1 | 制造商:Analog Devices 功能描述:EVAL BOARD - Bulk |
| EVAL-ADF4157EB1Z | 功能描述:BOARD EVALUATION FOR ADF4157 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準包裝:1 系列:- 主要目的:電信，線路接口單元（LIU） 嵌入式:- 已用 IC / 零件:IDT82V2081 主要屬性:T1/J1/E1 LIU 次要屬性:- 已供物品:板，電源，線纜，CD 其它名稱:82EBV2081 |
| EVAL-ADF4157EB1Z1 | 制造商:AD 制造商全稱:Analog Devices 功能描述:High Resolution 6 GHz Fractional-N Frequency Synthesizer |
| EVAL-ADF4158EB1Z | 功能描述:BOARD EVALUATION FOR ADF4158 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準包裝:1 系列:PSoC® 主要目的:電源管理，熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板，CD，電源 |
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