ANALOG DEVICES UG-104 Service Manual
Evaluation Board User Guide
UG-104
08891-001
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
Evaluation Board for ADF4360-7 Integrated PLL and VCO Frequency Synthesizer
FEATURES
Self-contained board for generating RF frequencies
Flexibility for reference input, PFD frequency, and loop
bandwidth
Accompanying software allows complete control of
synthesizer functions from a PC
Flexibility for changing the external inductor to allow
different VCO output frequency ranges
USB/battery-operated 9 V supplies
Typical phase noise performance of −143 dBc/Hz at 3 MHz offset
Typical spurious performance of −70 dBc at 200 kHz offset
(900 MHz output)
EVALUATION BOARD PHOTOGRAPH
GENERAL DESCRIPTION
The EV-ADF4360-7EB1Z evaluation board is designed to allow
the user to evaluate the performance of the ADF4360-7 frequency
synthesizer consisting of an integrated PLL and VCO (see Figure 1).
It contains the ADF4360-7BCPZ, a USB connector, and SMA
connectors for the RF outputs. Unpopulated SMA footprints are
available for the power supplies, the chip enable (CE), and the
external reference input. The evaluation board also contains
the loop filter to complete the PLL. It can be modified as necessary
for the PLL requirements of the user. A cable is included with
the board to connect a PC parallel port to allow software programmability.
The package also contains a CD with Windows® software to allow
quick, user-friendly programming of the synthesizer. The CD
contains additional PLL data sheets, technical notes, articles, and
ADIsimPLL™ V3.4 (Analog Devices, Inc., PLL simulation
software). More information is available at www.analog.com/pll.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITI ONS.
Figure 1.
Rev. B | Page 1 of 16
UG-104 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Evaluation Board Photograph ......................................................... 1
Revision History ............................................................................... 2
Evaluation Board Hardware ............................................................ 3
RF Output Stages .......................................................................... 3
External Inductor Options .......................................................... 4
Evaluation Board Software Quick Start Procedures .................... 5
REVISION HISTORY
2/12—Rev. A to Rev. B
Changed ADF4360-7EBZ1 to ADF4360-7EB1Z .......................... 1
Changed E VAL -ADF4360-7EBZ1 to EV-ADF4360-7EB1Z
Throughout ........................................................................................ 5
Changed EVAL-ADF4360-xEBZ1 to EV-ADF4360-7EB1Z ........ 7
Windows XP OS ............................................................................5
Windows Vista OS and Windows 7 (32-bit) OS ...........................6
Windows 7 64-Bit OS ...................................................................6
Using the Evaluation Board Software .............................................7
Evaluation Board Schematic ............................................................9
Ordering Information .................................................................... 12
Bill of Materials ........................................................................... 12
6/11—Rev. 0 to Rev. A
Changes to Features Section ............................................................ 1
Added Evaluation Board Software Quick Start Procedures
Section ................................................................................................. 5
Changes to Using the Evaluation Board Software Section .......... 7
Changes to Evaluation Board Schematic Section.......................... 9
Changes to Bill of Materials Section ............................................. 12
7/10—Revision 0: Initial Version
Rev. B | Page 2 of 16
Evaluation Board User Guide UG-104
08891-002
EVALUATION BOARD HARDWARE
The evaluation board comes with a cable to connect to the
USB port of a PC. The silkscreen and cable diagram for the
evaluation board are shown in Figure 2. The board schematics
are shown in Figure 11 through Figure 13.
Users may provide their own power supplies using the J4 and J5
connectors, as shown in Figure 2. Hardware power-down using
the CE pin can be controlled by inserting an SMA connector
into J6 and removing R12.
The on-board filter is a third-order, passive, low-pass filter.
The filter contains three capacitors (C13, C14, and C15) plus
two resistors (R10 and R11). The footprint for R10 is located on
the underside of the board. The design parameters for the loop
filter are for a center frequency of 900 MHz, a PFD frequency
of 200 kHz, and a low-pass filter bandwidth of 10 kHz. To design a
filter for different frequency setups, use the ADIsimPLL simulation
software.
RF OUTPUT STAGES
The output stage of the board allows users to insert a tuned load
for a particular frequency. The particular network inserted in
the board is optimized for 900 MHz operation. For different
frequencies, the output stage needs different component values.
Refer to the ADF4360-7 data sheet for further information. If in
doubt, use a 50 Ω resistor instead of the shunt inductor, a 100 pF
bypass capacitor, and a 0 Ω resistor instead of the series inductor.
It is important that the same components be placed on the
RF
A and RF
OUT
outputs be terminated with 50 Ω loads. Otherwise, the output
power is not optimum, and in some cases, the part may
malfunction.
B lines. In addition, it is essential that both
OUT
Figure 2. Evaluation Board Silkscreen—Top View
The board is powered from a single 9 V battery, or from the
USB supply, by changing the position of Switch SW1. All components necessary for LO generation are catered for on-board. A
10 MHz TCXO from Fox Electronics provides the necessary
reference input. Otherwise, an external reference signal can
be connected via J3. (Remove power and signal from the TCXO
by removing Resistors R4 and R5). The PLL comprises the
ADF4360-7BCPZ and a passive loop filter. The VCO output
from RF
J1 and the complementary RF
A is available through the standard SMA Connector
OUT
B VCO output is available
OUT
from J2.
Rev. B | Page 3 of 16
UG-104 Evaluation Board User Guide
08891-004
300
500
400
1200
1300
1400
1000
1100
800
900
600
700
1500
0 5 10 15 20 3025
EXT INDUCTANCE (nH)
FREQUENCY (MHz)
08891-005
EXTERNAL INDUCTOR OPTIONS
The ADF4360-7 uses external inductors (L1 and L2) to set up
the LC tank circuit of the VCO. The evaluation board has a
footprint for placing these inductors. A value of 3.9 nH is inserted
on the board giving a VCO center frequency of 900 MHz. For
this inductor value and for other inductor values of greater than
3.3 nH, a 470 Ω resistor in parallel to ground for both L1 and L2
must be inserted, as shown in Figure 3.
To find the optimum frequency range for a given inductor, see
Figure 4. Ensure that the desired frequency is between the two
lines and read off the appropriate inductance needed.
Figure 3. External Inductors and Resistors for ADF4360-7 Tank Circuit
Figure 4. Output Center Frequency vs. External Inductor Value
Rev. B | Page 4 of 16
Evaluation Board User Guide UG-104
08891-105
08891-006
EVALUATION BOARD SOFTWARE QUICK START PROCEDURES
The control software and USB drivers for EV-ADF4360-7EB1Z
accompany the EV-ADF4360-7EB1Z on a CD. To install the
software, use the following steps:
1. Open ADF4360_setup.msi.
2. The install wizard guides you through the installation
process. The software is installed in a default directory called
C:/Program Files/Analog Devices/ADF4360.
The software requires Microsoft’s .NET Framework Version 2.0
or later to be installed on your machine. The installer automatically downloads the framework from the Microsoft website if
you do not have this installed. If you do not have an Internet
connection or have a slow connection on the PC, then you
can install the .NET framework directly from the CD. Do
this by double-clicking dotnetfx.exe. Once installed, run
the ADF4360_Setup.msi again.
WINDOWS XP OS
Once you have installed the software, install the USB drivers.
To d o so, use the following steps:
1. Plug in a USB cable to the USB connector on the
evaluation board. The Found New Hardware box
appears. See Figure 5.
2. Choose Install from a list or specified location
(Advanced).
3. Click Continue Anyway when asked about Windows Logo
testing.
4. If the install was successful, the message box in Figure 6
appears.
Figure 6. Successful Install
Figure 5. New Hardware Wizard
Rev. B | Page 5 of 16
Loading...