AD9540BCPZ Просмотр технического описания (PDF) - Analog Devices
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AD9540BCPZ Datasheet PDF : 32 Pages
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TYPICAL APPLICATION CIRCUITS
25MHz
PHASE FREQUENCY
CRYSTAL DETECTOR/CHARGE PUMP
÷M REFIN
CP_OUT
÷N CLK2
400MHz
VCO
LPF
AD9540
CML
DRIVER
÷R
CLOCK1
DDS
DAC
CLOCK1′
LPF
ADCMP563
Figure 32. Dual Clock Configuration
EXTERNAL
REFERENCE
PHASE FREQUENCY
DETECTOR
÷M REFIN
÷N CLK2
CHARGE
PUMP
622MHz
VCO
LPF
CML
÷R
DRIVER
CLOCK1
AD9540
DDS
DAC
Figure 33. Optical Networking Clock
CLOCK2
ADCMP563
REFIN
CP_OUT
CLK2
VCO
LPF
DAC
DDS
÷R
LPF
AD9540
Figure 34 Fractional-Divider Loop
DAC
DDS
PHASE
FREQUENCY
DETECTOR
REFIN
LPF
CLK2
CHARGE
PUMP
VCO
LPF
÷N
AD9540
Figure 35. Direct Upconversion of DDS Output Spectrum
Rev. A | Page 17 of 32
AD9540
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