AD EVAL-ADF421XEB1 Evaluation board for pll frequency synthesizer Datasheet

a
Evaluation Board For PLL Frequency
Synthesizer
EVAL-ADF421XEB1
FEATURES
General Purpose PLL Evaluation Board excluding Synthesizer, VCOs, Loop Filters for generating generic PLL
standards.
Compatible with ADF4210 and ADF4216 synthesizer families.
Accompanying Software allows complete control of synthesizer functions from PC
Battery Operated: Choice of 3V or 5V supplies
GENERAL DESCRIPTION
This board is designed to allow the user to evaluate
the performance of the ADF421X Frequency Synthesizer for PLL's (Phase Locked Loops). The block
diagram of the board is shown below. It contains the
footprint for a ADF421X synthesizer, a pc connector,
SMA connector for the reference input, power supplies and RF output. There is also a footprint for a
loop filter and a VCO for both the RF and IF section
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.
BLOCK DIAGRAM
9V B ATTER Y
V
DD
P O W E R S W ITCH
V
ON
O FF
V CO
V CO 1
(V ari-L)
V CO 1 90-X X XT
RF
OUT
SMA
S oc ke t
V
P
CE
A DF4 11X
R EF
IN
TCX O
V ectron
E VA L-A DF41 1X E B1
A D7 706
P C C O N NE CTO R
REV.PrA 02/00
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.
© 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
EVAL-ADF421XEB1
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
6
7
8
9
1
1
2
Black - CLK
2
3
Brown - DATA
3
4
Red - LE
5
Orange - CE
White - GND
Yellow
9 Way
Female D-Type
To
ADF411X
ADF421X
Evaluation
Board
4
5
6
7
8
9
Blue
10
11
14
15
16
17
PC
18
19
20
21
22
23
24
12
Purple
25
13
25 Way Male
D-Type
To
PC Printer Port
Figure 2. PC Cable Diagram
voltage is too low to sustain the required 3V or 5V for the
board supply.
Loop component values shown in the circuit diagram are
for 900MHz RF output, 5mA CP current, VCO190902T, 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 ADF4113 VDD and VP, and for the VCO
supply. The default settings are 3V for the ADF411X VDD
and 5V for the ADF411X VP and for the VCO supply. It
is very important to note that the ADF4113 VDD should
never exceed the ADF411X VP. This can damage the device.
All components necessary for LO generation are catered
for on-board. The TCXO connector provides the necessary Reference Input. The PLL is made up of the
ADF411X, passive loop filter and the VCO 190-XXXT
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 ADF411X.
This helps the user pick the optimum synthesizer settings for
power consumption and also provides an alert if the battery
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EVAL-ADF421XEB1
Figure 3. Evaluation Board Circuit Diagram (Page 1)
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EVAL-ADF421XEB1
Figure 4. Evaluation Board Circuit Diagram (Page 2)
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EVAL-ADF421XEB1
Software Description
The software comes on a set of two floppy disks (Disk 1 and
Disk 2). If the user double clicks on “setup.exe” on Disk 1,
then the install wizard installs the software. Follow the onscreen directions. The software will be installed in a default
directory called “C:/Program Files/Project1”. To run the
software, simply double-click on “adf411X.exe”.
The front panel of the evaluation board software is shown
below.
When the main software screen appears, follow the steps
below for initial setup to interface to the part.
Click on Choose Device, and the Device window will appear.
Choose the device being evaluated and click OK.
Click on Choose Port, and the Port Connector window will
appear. Choose the port that the cable is connected to on the
PC and click OK. (Normally LPT1)
Click on Osc In, and the Crystal Frequency window will
appear. Enter the reference frequency being used and click
OK.
Click on RF VCO Output Frequency, and the Output
Frequency window will appear. Enter the output frequency
and PFD reference frequency, and click OK.
Click On Prescaler, and the Prescaler window will appear.
Grab the pointer, and choose the desired prescaler value.
Click OK.
Click on the RF PD Polarity button to set the RF PD Polarity
bit High.
Click on Charge Pump Current Setting 2 or Charge Pump
Current Setting 1 and the Current Setting window will appear. Grab the pointer to set the Charge Pump Current Setting. Click OK.
The data is now set up, and other features can now be examined by the user.
Figure 5. Software Front Panel
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REV.PrA 02/00
EVAL-ADF421XEB1
Table 1. Bill of Materials for the EVAL-ADF411XEB1
Qty Reference
Description
Manufacturer
PCB DECAL
VALUE
ADI
ADI
ADI
ADI
ADI
Vari-L
Vari-L
TSSOP-20
SO16W B
SO8NB
SOT23-6
SOT23-6
AD7706BR
AD780AR
ADP3300ART-5
ADP3300ART-3
1
1
1
1
1
1
1
1
1
1
1
1
1
U1
U2
U3
U4
U5
VCO 1
VCO 2
Y1
Y2
D1
D2
D3
D4
Do Not Insert
AD7706BR
AD780AR
ADP3300ART-5
ADP3300ART-3
Do Not Insert
Do Not Insert
4.9152MHz Crystal
10 MHz TCXO
SD103C Schottky Di
IN4001
Red Low Power LED
Green Low Power LED (Do Not Insert
6
1
3
7
2
6
1
1
1
2
1
1
1
3
2
2
2
C1 C5 C7 C9 C11 C41
C2
C3 C29 C31
C4 C6 C8 C10 C12 C30 C32
C13-14
C15-17 C26-28
C18
C19
C20
C21-22
C23
C24
C25
C33 C36 C40
C34 C37
C35 C38
C39 C42
Multi Layer Ceramic
Tantalum Capacitor
Tantalum Capacitor
Multi Layer Ceramic
Multi Layer Ceramic
Multi Layer Ceramic
Do Not Insert
Do Not Insert
Do Not Insert
Multi Layer Ceramic
Do Not Insert
Do Not Insert
Do Not Insert
Multi Layer Ceramic
Tantalum Capacitor
Tantalum Capacitor
Tantalum Capacitor
1
7
1
1
1
6
2
1
1
1
1
1
1
1
3
6
2
2
2
1
R1
R2 R5-10
R3
R4
R11
R12-14 R21-23
R15 R24
R16
R17
R18
R19
R20
R25
R26
R27-29
R30-33 R40-41
R34-35
R36 R37
R38 R39
R42
Resistor (Surface
Resistor (Surface
Resistor (Surface
Do Not Insert
Do Not Insert
Resistor (Surface
Resistor (Surface
Do Not Insert
Do Not Insert
Resistor (Surface
Do Not Insert
Do Not Insert
Do Not Insert
Resistor (Surface
Resistor (Surface
Resistor (Surface
Do Not Insert
Resistor (Surface
Resistor (Surface
Resistor (Surface
1
1
SW 1
SW 2
21
1
4
2
Vectron International
HC49 low profile
Vectron International
Vishay
Vishay
DO35
D035
LED
LED
Murata
AVX
AVX
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
AVX
AVX
AVX
Case 06
CAP\TAJ_B
CAP\TAJ_A
Case 06
Case 06
Case 06
Case 08
Case 08
Case 08
Case 06
Case 08
Case 08
Case 08
Case 06
CAP\TAJ_A
CAP\TAJ_A
CAP\TAJ_A
0.1uF
10uF 6.3V
22uF 6.3V
10pF
1nF
100pF
Mount
Bourns
Mount
Mount
Mount
Bourns
Bourns
Meggitt
Mount
Mount
Mount
Bourns
Bourns
Bourns
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
Case
20r 1.0%
330r 1.0
3k3 1.0
Mount
Mount
Bourns
Bourns
Bourns
Bourns
Bourns
Bourns
Bourns
Push Button Switch
SPDT Switch - ( Washable)
Om ron
Apem
SW \PB-SMALL
SW _SIP-3P
FEC 176-986
FEC 150-559
T1-21
J1
J2 J3 J4 J5 J6
J6 J7
Red Testpoint
9 PIN D-TYPE MALE (HORIZ)
Do Not Insert
GOLD 50Ω SMA SOCKET
W Hughes
McMurdo
TESTPOINT
DCON9M
SMA
SMA
FEC-240-345
FEC 150-750
3
3
6
4
LK1 LK4 LK5
LK2 LK3 LK6
LK1-6
Each Corner
3 pin header
4 pin header (2x2)
Shorting Shunt
Rubber Stick-On Feet
Harwin
Harwin
Harwin
3M
SIP-3P
FEC
FEC
FEC
FEC
2
1
P1
P1
Pair PCB snap-on battery connector
9V PP3 Battery
Keystone
Duracell
BAT T_PP3
FEC 723-988
FEC 908-526
1
PCB
EVAL-ADF421XEB-5 (Rev. A)
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Capacitor
Mount
Mount
Mount
General Semiconductor
VXA1-1011
T-1185
SD103C
FEC 365-117
FEC 657-130
FEC 657-141
Pasternack
08
06
06
06
06
06
06
08
08
06
08
08
08
06
06
06
06
06
06
06
33pF
10nF
1uF 16V
4.7uF 10V
10uF 6.3V
18r 1.0%
51r 1.0%
1M 1.0%
2k7 1.0
10k 1.0
100k 0.1%
330k 1.0%
0r 1.0%
4k7 1.0
PE4118
512-047
512-035
150-410
148-922
Parts Free issued by ADI.
–6–
REV.PrA 02/00
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