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Evaluation Board for the ADF4150 PLL Frequency Synthesizer
FEATURES
General-purpose evaluation board for ADF4150, including
VCO, loop filter, and TCXO
Contains the ADF4150 frequency synthesizer (500 MHz to
5 GHz)
Accompanying software allows complete control of
synthesizer functions from a PC
EVALUATION KIT CONTENTS
EVAL-ADF4150EB1Z board
CD that includes
Self-installing software that allows users to control the
board and exercise all functions of the device
Electronic version of the ADF4150 data sheet
Electronic version of the UG-380 user guide
ADDITIONAL EQUIPMENT
PC running Windows XP or more recent version
Power supply
Spectrum analyzer
Oscilloscope (optional)
DOCUMENTS NEEDED
ADF4150 data sheet
REQUIRED SOFTWARE
Analog Devices ADF4150 software (Version 3 or higher)
ADIsimPLL
GENERAL DESCRIPTION
This board is designed to allow the user to evaluate the performance of the ADF4150 frequency synthesizer for phase-locked
loops (PLLs). Figure 1 shows the board, which contains the
ADF4150 synthesizer, loop filter, voltage control oscillator
(VCO), reference oscillator (TCXO) of 25 MHz frequency for
the reference input, power supply connectors, and an RF output.
The evaluation kit also contains software that is compatible with
Windows® XP and later versions to allow easy programming of
the synthesizer.
A USB port in the PC is required to program the part.
EVALUATION BOARD
Figure 1. EVAL-ADF4150EB1Z
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
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TABLE OF CONTENTS
Features .............................................................................................. 1
Evaluation and Test ........................................................................ 13
Evaluation Board Schematics and Artwork ................................ 14
Bill Of Materials .............................................................................. 22
Related Links ................................................................................... 23
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QUICK START GUIDE
Follow these steps to quickly evaluate the ADF4150 device:
1. Install the ADF4150 software.
2. Connect the ADF4150EB1Z evaluation board to the PC
3. Follow the hardware driver installation procedure.
4. Connect the power supplies to banana connectors (5.5 V).
5. Run the ADF4150 software.
6. Connect the spectrum analyzer to SMA connector
VCO_I/O.
7. Measure the results.
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EVALUATION BOARD HARDWARE
The E VA L -ADF4150EB1Z schematics are shown in Figure 23,
Figure 24, Figure 25 and Figure 26. The silkscreen of the
evaluation board is shown in Figure 2.
POWER SUPPLIES
The board is powered from external banana connectors. The
supply voltage should be 5.5 V. The power supply circuit uses
high precision, low noise ADP150AUJZ-3.3 linear regulators
and ADP3334ARMZ adjustable LDO regulators to provide 3.3 V
to V
on the board (which supplies the ADF4151 AVDD , DVDD ,
DD
and SDV
pins) and 5 V to the ADF4150 VP.
DD
INPUT SIGNALS
The reference signal is necessary for proper operation of the
synthesizer. It can be sourced from a provided TCXO or an
external generator, which can be connected to the REFIN edge
mount connector. To u se an external reference generator, it is
necessary to remove R1 and R2 to disconnect the TCXO from
the reference input and from the supply. R3 can be populated
with a 50 Ω resistor to adjust the impedance matching of the
evaluation board to the external reference source.
Digital SPI signals are supplied from the Cypress microcontroller, U6, which is used for communication with the USB port of
the PC.
also be used to provide an external supply for the on-board
VCO; however, if an external supply for VCO is used, Resistor R31
must be removed to disconnect the connector from the output
of the on-board voltage regulator.
Optionally, an external VCO can be used. In this case,
it is
necessary to remove R29 and insert a 0 Ω link at R46 to form a
connection between the loop filter output and the VTUNE
SMA edge mount connector. Remove R31 to disconnect the onboard VCO from the power supply. Remove Resistor R26 to
disconnect the output of the on-board VCO from the RF signal
path, and replace Resistors R27 and R28 with 0 Ω links to
ensure operation of the VCO_I/O connector as an input from
an external VCO.
OUTPUT SIGNALS
All components necessary for LO generation are inserted on
the board. The PLL is made up of the ADF4150 synthesizer, a
fourth-order passive loop filter, and the VCO. The loop filter
must be inserted between the charge pump output and the
VCO input, as shown in Figure 26. If replacing the VCO, a
VCO in a T-package (or similar) must be used. The RF output
is available at the edge mount SMA connector, VCO_I/ O, and
the differential RF output of the part is connected to the
RFOUT+ and RFOUT− edge mount SMA connectors.
DEFAULT OPERATION SETTINGS
This board is shipped with a TCXO that provides a reference
frequency of 25 MHz, a fourth-order low-pass filter with 30 kHz
bandwidth at I
= 2.325 mA, and a VCO with a 1.7 GHz to
CP
1.8 GHz frequency range. To te st the performance of the part
for a different frequency range and different loop filter, the
relevant components on the board must be changed.
ADDITIONAL OPTIONS
The VVCO connector can be used as a test point to measure the
supply voltage of the VCO in its default configuration. It can
Figure 2. Evaluation Board Silkscreen
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EVALUATION BOARD SETUP PROCEDURE
SOFTWARE INSTALLATION
Use the following steps to install the software.
1. Install the Analog Devices ADF4150 software by double-
clicking ADF4150 Setup.msi.
If you are using Windows XP, follow the instructions in the
Windows XP Software Installation Guide section (see
Figure 3 to Figure 7).
If you are using Windows Vista or Windows 7, follow the
instructions in the Windows Vista and Windows 7 Software
Installation Guide section (see Figure 8 to Figure 12).
Note that the software requires Microsoft Windows
Installer and Microsoft .NET Framework 3.5 (or higher).
The installer connects to the Internet and downloads
Microsoft .NET Framework automatically. Alternatively,
before running the ADF4150 Setup.msi, both the installer
and .NET Framework can be installed from the CD
provided.
2. Connect your board by USB.
If you are using Windows XP, follow the steps in the
Windows XP Driver Installation Guide section (see Figure 13
to Figure 16).
On Windows Vista or Windows 7, the drivers install
automatically.
Windows XP Software Installation Guide
Figure 3. Windows XP ADF4150 Software Installation, Setup Wizard
1. Click Next.
Figure 4. Windows XP ADF4150 Software Installation, Select Installation
Folder
2. Choose an installation directory and click Next.
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Windows Vista and Windows 7 Software Installation Guide
Figure 5. Windows XP ADF4150 Software Installation, Confirm Installation
3. Click Next.
Figure 6. Windows XP ADF4150 Software Installation, Logo Testing
4. Click Continue Anyway.
Figure 8. Windows Vista/7 ADF4150 Software Installation, Setup Wizard
1. Click Next.
Figure 9. Windows Vista/7 ADF4150 Software Installation, Select Installation
Folder
2. Choose an installation directory and click Next.
Figure 7. Windows XP ADF4150 Software Installation, Installation Complete
5. Click Close.
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Windows XP Driver Installation Guide
Figure 10. Windows Vista/7 ADF4150 Software Installation, Confirm Inst allation
3. Click Next.
Figure 11. Windows Vista/7 ADF4150 Software Installation, Start Installation
4. Click Install.
Figure 13. Windows XP USB Driver Installation, Found New Hardware Wizard
1. Choose Yes, this time only and click Next.
Figure 14. Windows XP USB Driver Installation, Install Options
2. Click Next.
Note that Figure 14 may list Analog Devices RFG.L Eval Board
instead of ADF4xxx USB Adapter Board.
Figure 12. Windows Vista/7 ADF4150 Software Installation,
Installation Complete
5. Click Close.
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Figure 15. Windows XP USB Driver Installation, Logo Testing
3. Click Continue Anyway.
Figure 16. Windows XP USB Driver Installation, Complete Installation
4. Click Finish.
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EVALUATION BOARD SOFTWARE
The control software for the EVA L-ADF4150EB1Z is available
on the CD included in the evaluation kit. To install the software,
see the Software Installation section.
To run the software, first connect the board to the USB port of
the PC and then click the ADF4150 file on the desktop or in the
Start menu (note that the revision number may be included in
the file name). Confirm that USB OK is displayed at the top
right corner of the software front panel display window (see
Figure 17). Otherwise, the software has no connection to the
evaluation board.
Note that, when connecting the board, it takes about 5 sec to
10 sec for the status label to change.
If the software is started before the board is connected to USB
port, an error window opens, informing that the USB device was
not found, and the No USB message is displayed in the top right
corner of the software front panel window. In this case, connect
the board to the USB port and click the Connect USB button.
Figure 17. Software Front Panel Display
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Use the Frequency text box in the Reference section to set the
correct reference frequency. The default reference on the
software window is at 25 MHz and matches the frequency of the
TCXO present on the board.
Use the Output Frequency section to control the output
frequency. To achieve single-tone on the RF output, type the
desired output frequency in the Activate f1 text box (in megahertz) and ensure that Stop is selected in the Dynamic section
under Output Frequency. Selecting the Alternate option
causes the frequency on the VCO output to switch between the
Activate f1 and Activate f2 values. The delay time between
frequency switches is controlled by the Approximate Delay
option. The third option of the Dynamic section, Sweep, allows
the output frequency to constantly change with the frequency
step set by Channel Spacing starting from Activate f1 until it
reaches Activate f2. When the Activate f2 frequency is reached,
the sweep is repeated. Note that the Sweep option is not allowed
if the Activate f1 and Activate f2 frequencies require different
settings for the output divider (the Out Div box in the Outputs
section). However, the Alternate option allows both frequencies
to be achieved with different output divider values.
Some register settings may need to be set manually. Click the
Register 1 to Register 5 buttons to open the register settings
windows (see Figure 18).
Click the REGISTERS button to display the binary and
hexadecimal values for all registers, as shown in Figure 20.
When a new register setting value is entered (see Figure 18),
the relevant Update Rx (where x = 0 to 5) button becomes red,
indicating that it must be clicked to program the part with the
new value. Clicking the Update ALL button programs all
register values simultaneously.
Click the OK button to confirm the new value in the Register x Settings (where x = 1, 2, 3, 4, or 5) window (see Figure 18).
Click Update Rx to program the part with the new value. The
new value is retained in the Register x Settings window if it is
opened again.
If the value entered is outside of the range specified in the
ADF4150 data sheet, an error message appears and the field is
automatically updated to the lowest or highest value within the
allowed range. Some limits are changed dynamically based on
the values of other registers; for example, the highest allowed
value for Phase in Register 1 Settings window depends on
current value of the modulus (MOD in the Settings section),
which is calculated based on the data from the Reference
section and the Channel Spacing box in the Output Frequency
section.
Click the C
the new value is not retained in the Register x Settings window
if it is opened again.
By clicking the Frac/Mod button, you can choose different
modes of operation, including programming of specified
integer, modulus, fractional, and output divider values. The
output frequency and channel spacing are calculated automatically when the values shown in Figure 19 are entered in the
Frac_Mod_Form window.
ancel button to abandon a register value change, and
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Figure 18. Register Settings Windows for Register 1, Register 2, Register 3, Register 4, and Register 5
Figure 19. Frac_Mod_Form Win dow Allows Direct Control of Integer, Modulus, Fractional, and Output Divider Values
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Figure 20. Registers Window Shows Current Values of All Registers of the Part
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PC
EXTERNAL DC
SUPPLY
EXTERNAL DC
SUPPLY
TCXO
VCO
LOOP FILTER
LOCK
DETECT
LED
PLL
POWER
LED
USB LED
PLL
USB
POWER
SUPPLIES
SIGNAL
GENERATOR
SPECTRUM
ANALYZER
REFERENCE
(OPTIONAL)
C21
C13
C14
R47
R59
R34
C67
R9
RF OUT +
RF OUT –
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EVALUATION AND TEST
To evaluate and test the performance of the ADF4150, use the
following procedure:
1. If using a different VCO and loop filter than provided on
the board, ensure that a VCO and loop filter are properly
inserted on the board. Use ADIsimPLL to generate the
loop filter component values.
2. Install the ADF4150 software. Connect the evaluation
board to a PC using the supplied USB cable. Follow the
hardware driver installation procedure that appears.
3. If the on-board crystal oscillator is used, skip this step.
If an external reference is necessary, connect a reference
signal to the REFIN edge mount connector.
4. Connect the power supply to the board.
5. Connect a spectrum analyzer to Connector VCO_I/O.
6. Run the ADF4150 software.
7. In the software window, set the RF output center frequency
(Figure 21 shows a screenshot of the spectrum analyzer
taken at a frequency of 1750 MHz, which is in the midrange
of the provided VCO). Set the PFD frequency as defined
in ADIsimPLL, and program the reference frequency to
25 MHz if the on-board TCXO is used or to the frequency
that has been supplied to the REFIN connector. See Figure 22
for the suggested setup.
8. Measure the output spectrum. Figure 21 shows a
1750 MHz output.
Figure 21. Spectrum Analyzer Display
Figure 22. Typical Evaluation Setup
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EVALUATION BOARD SCHEMATICS AND ARTWORK
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Figure 23. Evaluation Board Schematic (Page 1)
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Figure 24. Evaluation Board Schematic (Page 2)
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Figure 25. Evaluation Board Schematic (Page 3)
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Figure 26. Evaluation Board Schematic (Page 4)
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Figure 27. Layer 1 (Component Side)
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Figure 28. Layer 2 (Ground Plane)
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Figure 29. Layer 3 (Power Plane)
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Figure 30. Layer 4 (Solder Side)
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C40, C41, C48, C51
22 µF
6.3 V tantalum capacitor (TAJ-A case)
AVX, TAJA226K006R
BILL OF MATERIALS
Table 1.
Reference Designator Value Description Manufacturer/Part Number
AGND Black test point Vero 20-2137
C1, C4, C10, C18, C25, C44, C45, C46,
U1 PLL Analog Devices ADF4150
U2, U10 3.3 V linear regulator Analog Devices ADP150AUJZ-3.3
U3, U4, U5 Adjustable LDO regulator Analog Devices ADP3334ARMZ
U6 USB microcontroller Cypress Semiconductor
CY7C68013A-56LFXC
U8 50 MHz to 6 GHz RF/IF gain block Analog Devices ADL5541ACPZ
USB USB Mini-B connector (USB-OTG) Molex 54819-0578
VCO_I/O, VTUNE, VVCO End-launch 50 Ω SMA jack Emerson Network 142-0701-851
VSUPPLY_5V5 Red 4 mm banana socket Deltron 571-0500-01
Y1 ( ALT ) 25 MHz SMD temperature compensated
crystal oscillator
Y2 24 MHz SMD crystal ECS International ECS-240-12-20A-TR
Y3 1700 MHz to
1800 MHz
VCO Mini-Circuits ROS-1800+
Rakon TXO225B
RELATED LINKS
Resource Description
ADF4150Product Page, Fractional-N/Integer-N PLL Synthesizer
ADP150Product Page, Ultralow Noise, 150 mA CMOS Linear Regulator
ADP3334Product Page, High Accuracy Low IQ, 500 mA anyCAP® Adjustable Low Dropout Regulator
ADL5541 Product Page, 50 MHz to 6 GHz RF/IF Gain Block, Gain of 15 dB
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OSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
rued in accordance with the substantive laws of the Commonwealth of
NOTES
I2C refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors).
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high e nergy ESD. Therefore, proper ESD precaution s should be taken to avoid per formance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditio ns
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) an d Analog Devices, In c.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Further more, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI , Cu stomer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of t he Evaluation Board, are res erved by ADI. CONFIDENTIA LITY. This Agr eement and the Evaluation Board shall all be considered the confidential and proprietary information of A DI. Custom er may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but no t limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time u pon giving written noti ce
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRES ENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICAL LY DISC LAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUA RANTEES, OR WARRANT IES, EXPRESS OR IMPLIED, RE LATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR AN Y INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENT IAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUAT ION BOARD, INCLUDING BUT NOT LIMI TED TO LOST PROFITS, DE LAY COSTS, LABOR COSTS OR L
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and const
Massachusetts (excluding conflict of law rules). Any le gal action regarding t his Agreement will be he ard in the state or federal courts having juri sdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the personal jurisdiction and venue of such courts. The United Nations Convention on Contracts for the I nternational Sale of Goods shall not apply to this Agreement and is expre ssly disclaimed.