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a
Evaluation Board For PLL Frequency Synthesizer
EVAL-ADF421XEB1
GENERAL DESCRIPTION
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
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 V CO
O FF
V
P
V CO 1 (V ari-L) V CO 1 90-X X XT RF SMA S oc ke t A DF4 11X
CE
OUT
R EF TCX O V ectron
IN
E VA L-A DF41 1X E B1
A D7 706
P C C O N NE CTO R
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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.
(c) 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 2 3 4 5
Black - CLK Brown - DATA Red - LE Orange - CE White - GND Yellow
1 2 3 4 5 6 7 8 9
Blue
14 15 16 17 18 19 20 21 22 23 24
PC
9 Way Female D-Type To ADF411X ADF421X Evaluation Board
10 11 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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Figure 3. Evaluation Board Circuit Diagram (Page 1)
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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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Table 1. Bill of Materials for the EVAL-ADF411XEB1
Qty Reference 1 1 1 1 1 1 1 1 1 1 1 1 1 6 1 3 7 2 6 1 1 1 2 1 1 1 3 2 2 2 1 7 1 1 1 6 2 1 1 1 1 1 1 1 3 6 2 2 2 1 1 1 21 1 4 2 3 3 6 4 2 1 1 U1 U2 U3 U4 U5 VCO 1 VCO 2 Y1 Y2 D1 D2 D3 D4 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 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 SW 1 SW 2 T1-21 J1 J2 J3 J4 J5 J6 J6 J7 LK1 LK4 LK5 LK2 LK3 LK6 LK1-6 Each Corner P1 P1 PCB Parts Free issued by ADI. Description 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 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 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 Capacitor Capacitor Capacitor Capacitor Manufacturer ADI ADI ADI ADI ADI Vari-L Vari-L
Vectron International Vectron International
PCB DECAL TSSOP-20 SO16W B SO8NB SOT23-6 SOT23-6 HC49 low profile DO35 D035 LED LED 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 Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case Case 08 06 06 06 06 06 06 08 08 06 08 08 08 06 06 06 06 06 06 06
VALUE
AD7706BR AD780AR ADP3300ART-5 ADP3300ART-3 VXA1-1011 T-1185 SD103C FEC 365-117 FEC 657-130 FEC 657-141 0.1uF 10uF 6.3V 22uF 6.3V 10pF 1nF 100pF
General Semiconductor Vishay Vishay Murata AVX AVX Murata Murata Murata Murata Murata Murata Murata Murata Murata Murata Murata AVX AVX AVX Bourns Bourns Bourns Bourns Bourns Bourns Bourns Bourns
Capacitor
33pF
Capacitor
10nF 1uF 16V 4.7uF 10V 10uF 6.3V 20r 1.0% 330r 1.0 3k3 1.0 18r 1.0% 51r 1.0% 1M 1.0%
Mount Mount Mount Mount Mount Mount
Mount Mount Mount Mount Mount Mount
Bourns Bourns Meggitt Bourns Bourns Bourns Om ron Apem W Hughes McMurdo Pasternack Harwin Harwin Harwin 3M Keystone Duracell
2k7 1.0 10k 1.0 100k 0.1% 330k 1.0% 0r 1.0% 4k7 1.0 FEC 176-986 FEC 150-559 FEC-240-345 FEC 150-750 PE4118 FEC FEC FEC FEC 512-047 512-035 150-410 148-922
Push Button Switch SPDT Switch - ( Washable) Red Testpoint 9 PIN D-TYPE MALE (HORIZ) Do Not Insert GOLD 50 SMA SOCKET 3 pin header 4 pin header (2x2) Shorting Shunt Rubber Stick-On Feet Pair PCB snap-on battery connector 9V PP3 Battery EVAL-ADF421XEB-5 (Rev. A)
SW \PB-SMALL SW _SIP-3P TESTPOINT DCON9M SMA SMA SIP-3P
BAT T_PP3
FEC 723-988 FEC 908-526
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