AD9953-PCB Analog Devices, Inc., AD9953-PCB Datasheet - Page 29

• Manufacturer Part Number: AD9953-PCB
• Description: 400 Msps 14-bit, 1.8v Cmos Direct Digital Synthesizer
• Manufacturer: Analog Devices, Inc.

SUGGESTED APPLICATION CIRCUITS
SIGNAL
REFCLK
REF
Figure 27. Synchronized LO for Up Conversion/Down Conversion
Figure 28. Digitally Programmable Divide-by-N Function in PLL
FILTER
COMPARATOR
AD9953
PHASE
AD9953
RF/IF INPUT
TUNING
WORLD
LPF
FILTER
LOOP
MODULATED/
DEMODULATED
SIGNAL
VCO
Rev. 0 | Page 29 of 32
CRYSTAL
SAW
Figure 29. Two AD9953s Synchronized to Provide I and
Q Carriers with Independent Phase Offsets for Nulling
REFCLK
REFCLK
CRYSTAL OUT
REFCLK
FREQUENCY
FREQUENCY
TUNING
WORD
TUNING
AD9953 DDS
AD9953 DDS
WORD
OFFSET
WORD 1
OFFSET
WORD 2
SYNC OUT
PHASE
PHASE
SYNC IN
IOUT
IOUT
IOUT
IOUT
LPF
LPF
BASEBAND
BASEBAND
Q/Q-BAR
I/I-BAR
AD9953
RF OUT