參數(shù)資料
型號: ADF4001BRU
廠商: ANALOG DEVICES INC
元件分類: XO, clock
英文描述: 200 MHz Clock Generator PLL
中文描述: 200 MHz, OTHER CLOCK GENERATOR, PDSO16
封裝: TSSOP-16
文件頁數(shù): 1/16頁
文件大?。?/td> 190K
代理商: ADF4001BRU
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
a
ADF4001
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
www.analog.com
Analog Devices, Inc., 2001
200 MHz Clock Generator PLL
FUNCTIONAL BLOCK DIAGRAM
RF
IN
A
RF
IN
B
13-BIT
N COUNTER
LOCK DETECT
CURRENT
SETTING 1
CPI3
CPI2
CPI1
CPI6 CPI5
CPI4
M1
M3
M2
SD
OUT
AV
DD
REF
IN
CLK
DATA
LE
AV
DD
DV
DD
V
P
CPGND
R
SET
14-BIT
R COUNTER
R COUNTER
LATCH
FUNCTION
LATCH
24-BIT
INPUT REGISTER
N COUNTER
LATCH
SD
OUT
22
14
ADF4001
MUXOUT
MUX
HIGH Z
CURRENT
SETTING 2
CHARGE
PUMP
CP
CE
AGND
DGND
PHASE
FREQUENCY
DETECTOR
REFERENCE
13
FEATURES
200 MHz Bandwidth
2.7 V to 5.5 V Power Supply
Separate Charge Pump Supply (V
P
) Allows Extended
Tuning Voltage in 5 V Systems
Programmable Charge Pump Currents
3-Wire Serial Interface
Hardware and Software Power-Down Mode
Analog and Digital Lock Detect
Hardware-Compatible to the ADF4110/ADF4111/
ADF4112/ADF4113
Typical Operating Current 4.5 mA
Ultralow Phase Noise
16-Lead TSSOP
20-Lead Chip Scale Package
APPLICATIONS
Clock Generation
Low Frequency PLLs
Low Jitter Clock Source
Clock Smoothing
Frequency Translation
SONET, ATM, ADM, DSLAM, SDM
GENERAL DESCRIPTION
The ADF4001 clock generator can be used to implement clock
sources for PLLs that require very low noise, stable refer-
ence signals. It consists of a low-noise digital PFD (Phase
Frequency Detector), a precision charge pump, a programmable
reference divider, and a programmable 13-bit N counter. 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 implemented if the synthesizer
is used with an external loop filter and VCO (Voltage Controlled
Oscillator) or VCXO (Voltage Controlled Crystal Oscillator).
The N min value of 1 allows flexibility in clock generation.
相關PDF資料
PDF描述
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