AD9956 Analog Devices, AD9956 Datasheet - Page 16

• Manufacturer Part Number: AD9956
• Description: 2.7 GHz DDS-Based AgileRF
• Manufacturer: Analog Devices

AD9956
TYPICAL APPLICATION CIRCUITS
CRYSTAL
25MHz
CRYSTAL
25MHz
DETECTOR/CHARGE PUMP
÷M
÷N
PHASE FREQUENCY
AD9956
PLLREF
PLLOSC
CP_OUT
Figure 24. LO and Baseband Modulation Generation
DRIVER
÷N
LPF
CML
Figure 22. Dual-Clock Configuration
Figure 23. Fractional-Divider Loop
PLLREF
PLLOSC
CP_OUT
DDS
÷R
PLLREF
PLLOSC
Rev. 0 | Page 16 of 32
DDS
AD9956
CP_OUT
DAC
LPF
400MHz
VCO
LPF
DAC
DAC
DDS
LPF
÷R
VCO
AD9956
DRIVER
CML
VCO
÷R
BPF
2.5GHz
TONE
(FC = 100MHz)
8-LEVEL FSK
LPF
BPF
CLOCK1
CLOCK1′