Datasheet

AD9959
Rev. B | Page 14 of 44
APPLICATION CIRCUITS
CH0
CH1
AD9959
REFCLK
CH3
CH2
PULSE
FILTER
FILTER
FILTER
FILTER
ANTENNA
RADIATING
ELEMENTS
05246-042
FILTER
FILTER
FILTER
FILTER
LO
Figure 22. Phase Array Radar Using Precision Frequency/Phase Control from DDS in FMCW or Pulsed Radar Applications;
DDS Provides Either Continuous Wave or Frequency Sweep
CH0
CH1
AD9959
I BASEBAND
Q BASEBAND
RF OUTPU
T
REFCLK
CH3
CH2
IMAGE
FREQUENCY
LO
LO ±90
DEGREES
ADL5390
A
D8349
AD8348
AD8347
AD8346
05246-043
Figure 23. Single-Sideband-Suppressed Carrier Upconversion
LOOP
FILTER
PHASE
COMPARATOR
VCO
LPF
AD9959
REFCLK
REFERENCE
CHARGE
PUMP
AD9510, AD9511, ADF4106
÷
÷
05249-039
Figure 24. DDS in PLL Locking to Reference Offering Distribution with Fine Frequency and Delay Adjust Tuning