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AD9953 数据表(PDF) 29 Page - Analog Devices

部件名 AD9953
功能描述  400MSPS, 14-Bit, 1.8 V CMOS Direct Digital Synthesizer
PDF  32 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD9953 数据表(HTML) 29 Page - Analog Devices

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Data Sheet
AD9953
Rev. B | Page 29 of 32
SUGGESTED APPLICATION CIRCUITS
LPF
AD9953
REFCLK
RF/IF INPUT
MODULATED/
DEMODULATED
SIGNAL
Figure 27. Synchronized LO for Up Conversion/Down Conversion
FILTER
PHASE
COMPARATOR
LOOP
FILTER
AD9953
TUNING
WORLD
REF
SIGNAL
VCO
Figure 28. Digitally Programmable Divide-by-N Function in PLL
CRYSTAL
FREQUENCY
TUNING
WORD
PHASE
OFFSET
WORD 2
I/I-BAR
BASEBAND
FREQUENCY
TUNING
WORD
PHASE
OFFSET
WORD 1
Q/Q-BAR
BASEBAND
SYNC IN
AD9953 DDS
REFCLK
REFCLK
REFCLK
LPF
SYNC OUT
CRYSTAL OUT
AD9953 DDS
IOUT
IOUT
LPF
IOUT
IOUT
RF OUT
Figure 29. Two AD9953s Synchronized to Provide I and
Q Carriers with Independent Phase Offsets for Nulling



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