FEATURES
Self-Contained Board including Synthesizer, VCO, Loop
Filter for generating frequencies of 1700MHz to
1800MHz
Designed for 20kHz Loop Bandwidth
Accompanying Software allows complete control of synthe-
sizer functions from PC
Battery Operated: Choice of 3V or 5V supplies
Typical Phase Noise Performance of -86dBc/Hz @ 1kHz
offset
BLOCK DIAGRAM
9V BATTERY
9V BATTERY
Frequency Synthesizer
EV AL-ADF4113EB2
GENERAL DESCRIPTION
This board is designed to allow the user to evaluate the
performance of the ADF4113 Frequency Synthesizer for
PLL's (Phase Locked Loops). The block diagram of the
board is shown below. It contains the ADF4113 synthesizer, a pc connector, SMA connector for the reference
input, power supplies and RF output. There is also a
loop filter (20kHz bandwidth) and a VCO on board. A
cable is included with the board to connect to a pc
printer port.
The package also contains windows software to allow
easy programming of the synthesizer.
V
V
DD
VCO
VCO 1
(Var i-L )
VCO 190-1750T
SMA
Socket
EVAL-ADF4113EB2
PC CONNECTOR
PC CONNECTOR
POWER SWITCH
ONOFF
ADF4 113
TCXO
TCXO
Vectron
AD7706
AD7706
V
P
CE
REF
IN
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties which may result from its use.
No license is granted by implication or otherwise under any patent or patent rights of
Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781-329-4700Fax: 781-326-8703
Hardware Description
The evaluation board comes with a cable for connecting to
the printer port of a PC. The silk screen and cable diagram for
the evaluation board are shown below. The board schematic is
shown on pages 3 and 4.
EV AL-ADF4113EB2
EVAL-ADF411X
EVAL-ADF421X
1
6
2
7
3
8
4
9
5
9 Way
Female D-Type
To
ADF411X
ADF421X
Evaluation
Board
Brown - DATA
Figure 2. PC Cable Diagram
Loop component values shown in the circuit diagram are
for 1750MHz RF output, 5mA CP current, VCO1901750T, 200kHz channel spacing and 20kHz loop bandwidth.
Black - CLK
Red - LE
Orange - CE
White - GND
Yellow
Blue
Purple
1
14
2
15
3
16
4
17
5
18
6
19
7
20
8
21
9
22
10
23
11
24
12
25
13
25 Way Male
D-Type
To
PC Printer Port
PC
Figure 1. Evaluation Board Silkscreen
The board is powered from a single 9V battery. The power
supply ciruitry allows the user to choose either 3V or 5V for
the ADF4113 V
default settings are 3V for the ADF4113 V
ADF4113 V
to note that the ADF4113 V
ADF4113 V
and VP, and for the VCO supply. The
DD
and for the VCO supply. It is very important
P
. This can damage the device.
P
should never exceed the
DD
and 5V for the
DD
All components necessary for LO generation are onboard. The 10 MHz TCXO from Vectron provides the
necessary Reference Input. The PLL is made up of the
ADF4113, passive loop filter (20kHz bandwidth) and the
VCO 190-1750 from Vari-L. The output is available at
RFOUT through a standard SMA connector. If the user
wishes they may use their own power supplies and reference input. In this case, they need to insert SMA connectors to as shown on the silkscreen and block diagram.
The AD7706 A/D converter is used to monitor the power
supply voltage and current consumption of the ADF4113.
This helps the user pick the optimum synthesizer settings for
power consumption and also provides an alert if the battery
voltage is too low to sustain the required 3V or 5V for the
board supply.
The software comes on a CD marked "ADF4xxx evaluation software". If the user double clicks on “setup.exe” on
the CD, then the install wizard installs the software. Follow the on-screen directions. The software will be installed in a default directory called
“C:\ProgramFiles\Analog Devices\ADF4XXX_rev0”.
The installation will create a shortcut under Analog Devices by default. The program can be run by clicking on
ADF4XXX_rev0.
On running the software a panel appears which asks the
user to choose the device to progam. Select the ADF4113.
The front panel will appear with some arbitrary values.
The evaluation board can be setup exactly by clicking
"Eval Board" near the top right corner of the panel. From
the following menu select ADF4113EB2.
This will program the device to the recommended settings
for the setup (i.e. charge pump current, prescaler, polarity
etc.) The user can adjust any of the settings by clicking
with the left mouse button on that feature and adjusting it
accordingly. The drop-down menus contain options to
examine the various test-modes or to set the configuration
options.
There is also a facility to monitor the Supply and Charge
Pump Voltage as well as the Device Current. To get the
most up to date reading just click on the "UpdateVoltage
and Current Display Button".
Figure 5. Software Front Panel
–5–
REV.PrA 01/00
EV AL-ADF4113EB2
Re ference Designat orDe scri ptionMa nufactur erPCB DECALVAL UE
Table 1. Bill of Materials for the EVAL-ADF4113EB2
U1ADF4113BRUADITSSOP-16ADF4113BRU
U2AD7706BRADISO16WBAD7706BR
U3AD780ARADISO8NBAD780AR
U4ADP3300ART-5ADISOT23-6ADP3300ART-5
U5ADP3300ART-3ADISOT23-6ADP3300ART-3
VCO1VCO190-1750Vari- L ( A ca l Elect . = Dis ti )VCO190-1750
Y14.9152MHz Crystal
Y210 MHz TCXO
D1SD103C Schottky DiodeGeneral SemiconductorDO35SD103C
D2IN4001D035FEC 365-117
D3Red Low Power LEDVishaLEDFEC 657-130
D4Green Low Power LED (Do Not Insert) VishaLEDFEC 657-141