CN-0134 Datasheet, PDF (5/5 Pages) Analog Devices – Broadband Low Error Vector Magnitude (EVM) Direct Conversion Transmitter

Circuit Note
RFOUTA+ 13
RFOUTA– 12
FILTER 1
RFOUTB+ 14
RFOUTB– 15
ADF4350
FILTER 2
DP4T
SWITCH
1nF
9 LOIP
1nF
10 LOIN
ADL5375
Figure 8. Application Diagram Showing Possibility of Filter Switching Using
the ADF4350 Main and Auxiliary Outputs
CIRCUIT EVALUATION AND TEST
The CFTL-0134-EVALZ evaluation board contains the circuit
described in circuit note CN-0134, allowing for the quick setup
and evaluation of the circuit’s performance. The control
software for the CFTL-0134-EVALZ board uses the standard
ADF4350 programming software, located on the CD that
accompanies the evaluation board.
Equipment Needed
A standard PC running Windows® XP, Windows Vista (32-bit),
or Windows 7 (32-bit) with USB port, the CFTL-0134-EVALZ
circuit evaluation board, and the ADF4350 programming
software, power supplies, I-Q signal source, such as a Rhode &
Schwarz AMIQ, and a spectrum analyzer such as the Rhode &
Schwartz FSQ8. For additional details see the evaluation guide
(CN0134-EvalGuide-RevA.pdf), which is contained in the
design support package (http://www.analog.com/CN0134-
DesignSupport), and the ADF4350 and ADL5375 data sheets.
Getting Started
See CN0134-EvalGuide-RevA.pdf for software installation and
test setup. The documentation also includes the block diagram,
the application schematic, the bill of materials, and the layout
and assembly information. Also see the AD4350 and ADL5375
data sheets for additional details.
Functional Block Diagram
See Figure 1 and Figure 6 in circuit note CN-0134 and the
CN0134-EvalGuide-RevA.pdf, Wideband TX Modulator
Solution user document in the design support package.
Setup and Test
See circuit note CN-0134 and the CN0134-EvalGuide-
RevA.pdf, Wideband TX Modulator Solution user document,
CN-0134
for software installation and test setup. Also see the AD4350
and ADL5375 data sheets for additional details.
LEARN MORE
CN0134 Design Support Package:
http://www.analog.com/CN0134-DesignSupport
ADIsimPLL Design Tool
ADIsimPower Design Tool
ADIsimRF Design Tool
AN-0996 Application Note. The Advantages of Using a
Quadrature Digital Upconverter (QDUC) in Point-to-Point
Microwave Transmit Systems. Analog Devices.
AN-1039 Application Note. Correcting Imperfections in IQ
Modulators to Improve RF Signal Fidelity. Analog Devices.
Data Sheets and Evaluation Boards
ADF4350 Data Sheet
ADF4350 Evaluation Board
ADL5375 Data Sheet
ADL5375 Evaluation Board
ADP150 Data Sheet
ADP3334 Data Sheet
REVISION HISTORY
11/10—Rev. A to Rev. B
Changes to Circuit Note Title..........................................................1
Added Evaluation and Design Support Section............................1
Changes to Circuit Description Section.........................................2
Changes to Figure 6 .......................................................................... 4
Added Circuit Evaluation and Test Section...................................5
9/10—Rev. 0 to Rev. A
Changes to Circuit Note Title..........................................................1
Changes to Circuit Function and Benefits Section.......................1
Changes to Circuit Description Section.........................................2
Changes to Common Variations Section.......................................4
1/10—Revision 0: Initial Version
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CN08659-0-11/10(B)
Rev. B | Page 5 of 5