AD9854/PCB Analog Devices Inc, AD9854/PCB Datasheet - Page 17
![no-image](/images/manufacturer_photos/0/0/57/analog_devices_inc_sml.jpg)
AD9854/PCB
Manufacturer Part Number
AD9854/PCB
Description
BOARD EVAL FOR AD9854
Manufacturer
Analog Devices Inc
Datasheet
1.AD9854ASTZ.pdf
(52 pages)
Specifications of AD9854/PCB
Rohs Status
RoHS non-compliant
Module/board Type
Evaluation Board
For Use With/related Products
AD9854
- Current page: 17 of 52
- Download datasheet (2Mb)
DDS – LO
NOTES
1. FLIP DDS QUADRATURE SIGNALS TO SELECT ALTERNATE SIDEBAND. ADJUST DDS
CLOCK
Figure 32. Differential Output Connection for Reduction of Common-Mode Signals
SINE OR COSINE SIGNAL AMPLITUDE FOR GREATEST SIDEBAND SUPPRESSION.
DDS DAC OUTPUTS MUST BE LOW-PASS FILTERED PRIOR TO USE WITH THE AD8346.
REF
REFERENCE
CLOCK
REFERENCE
LO
CLOCK
REJECTION
Figure 29. Programmable Fractional Divide-by-N Synthesizer
AD9854
TUNING
DAC OUT
WORD
TYPICAL
DDS
FILTER
36dB
+ LO
DDS
SSB
Figure 30. Agile High Frequency Synthesizer
AD9854
Figure 31. Single Sideband Upconversion
DDS
V
50Ω
AD8346 QUADRATURE
FILTER
OUT
COMPARATOR
AD9854
TUNING
PHASE
WORD
MODULATOR
TRANSFORMER-COUPLED
DDS
Σ
Rev. E | Page 17 of 52
(Mini-Circuits
I
I
OUT
OUT
1:1 TRANSFORMER
SPLITTER
DIFFERENTIAL
COMPARATOR
PHASE
DIVIDE-BY-N
OUTPUT
PHASE
50Ω
LO
LO
PROGRAMMABLE
DIVIDE-BY-N FUNCTION
(WHERE N = 2
REF CLK IN
90
0
®
FILTER
LOOP
T1-1T)
COSINE (DC TO 70MHz)
SINE (DC TO 70MHz)
2.5GHz
0.8 TO
FILTER
FILTER
LOOP
48
/TUNING WORD)
VCO
FREQUENCY
QUADRATURE
AD9854
OUT
RF
VCO
50Ω
DDS
FREQUENCY
OUT
RF
AD9854
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