ANALOG DEVICES EVAL-ADF4213EB1 Service Manual
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Evaluation Board For PLL
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FEATURES
Self-Contained Board including Synthesizer, VCO,s and
Loop Filter
Channel Spacing: 200kHz
RF Output: 900MHz
IF Output: 540MHz
Designed for 20kHz loop bandwidth on both IF and RF
Accompanying Software allows complete control of synthe-
sizer functions from PC
Battery Operated: Choice of 3V or 5V supplies
Typical Phase Noise Performance of -91dBc/Hz @ 1kHz
offset for RF (900MHz)
Typical Spurious Performance of better than -90dBc at
200kHz offset from carrier
BLOCK DIAGRAM
Frequency Synthesizer
EV AL-ADF4213EB1
GENERAL DESCRIPTION
This board is designed to allow the user to evaluate the
performance of the ADF4213 Frequency Synthesizer for
PLL's (Phase Locked Loops). The block diagram of the
board is shown below. It contains the ADF4213 synthesizer, a pc connector, TCXO reference input, power
supplies and IF/RF outputs. Both output channels have a
20kHz loop filter. The IF channel has a 540MHz VCO
while the RF channel has a 900MHz VCO. 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
RF
V
DD
VCO
OUT
REF
IN
VCO190-
902T
SMA
Socket
EVAL-ADF4213EB1
PC CONNECTOR
PC CONNECTOR
TCXO
9V BATTERY
9V BAT-
TERY
POWER
SWITCH
ON OFF
ADF4213
AD7706
VCO190-
540T
SMA
Socket
V
P
IF
OUT
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.
REV.PrA 12/00
© Analog Devices, Inc., 1999
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781-329-4700 Fax: 781-326-8703
EV AL-ADF4213EB1
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.
EVAL-ADF411X
EVAL-ADF421X
1
6
2
7
3
8
4
9
5
9 Way
Female D-Type
To
ADF411X
ADF421X
Evaluation
Board
ADF411X/ADF421X CABLE CONNECTIONS Rev 2 (15/3/99)
Black - CLK
Brown - DATA
Red - LE
Orange - CE
White - GND
Yellow
Purple
1
2
3
4
5
6
7
8
9
10
Blue
11
12
13
25 Way Male
D-Type
To
PC Printer Port
14
15
16
17
18
19
20
21
22
23
24
25
PC
Figure 2. PC Cable Diagram
The AD7706 A/D converter is used to monitor the power
supply voltage and current consumption of the ADF4213.
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.
RF loop component values shown in the circuit diagram are
for 900MHz RF output, 5mA CP current, VCO190-902T,
200kHz channel spacing and 20kHz loop bandwidth.
IF loop component values are for 540MHz IF output, 5mA
CP current, VCO190-540T, 200kHz channel spacing and
20kHz loop bandwidth.
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 ADF4213 V
default settings are 3V for the ADF4213 V
ADF4213 V
to note that the ADF4213 V
ADF4213 V
and VP, and for the VCO supplies. The
DD
and for the VCO supplies. 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 on-board.
The 13MHz TCXO from Vectron provides the necessary
Reference Input. There are two channels controlled by the
ADF4213.
The RF PLL is made up of one half of the ADF4213, a passive loop filter (20kHz bandwidth) and the VCO 190-902T
from Vari-L. The output is available at RFOUT through a
standard SMA connector.
The IF PLL is made up of one half of the ADF4213, a passive loop filter (20kHz bandwidth) and the VCO 190-540T
from Vari-L. The output is available at IFOUT 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 as shown on the silkscreen and block diagram.
–2–
REV.PrA 12/00
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