ANALOG DEVICES UG-158 Service Manual
Evaluation Board User Guide
ADF4007
+15V
EVAL-ADF4007EBZ1
REF
IN
RF
OUT
V
TUNE
POWER SWITCH
ON OFF
0V
RF
IN
M2
M1
N2
N1
1
1
1
1
0
0
0
0
MUXOUT
OP27G
01943-001
UG-158
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 the 7.5 GHz PLL Frequency Synthesizer
FEATURES
On-board regulators for 3 V, 5 V, 12 V power supplies
Includes OP27 for active filter applications
Designed for simple hook-up to an external VCO board
EVALUATION BOARD CONNECTION DIAGRAM
GENERAL DESCRIPTION
This board is designed to allow the user to evaluate the
performance of the ADF4007 frequency synthesizer for PLLs
(phase locked loops). The block diagram of the board is shown
in Figure 1. It contains the ADF4007 synthesizer, links for
choosing the divide ratio (8, 16, 32, and 64), an SMA connector
for the reference input, and an RF input and output.
Figure 1.
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 8
UG-158 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Evaluation Board Connection Diagram ........................................ 1
Revision History ............................................................................... 2
Hardware Description ...................................................................... 3
Test Procedure For EVAL-ADF4007EBZ1 .................................... 4
REVISION HISTORY
12/10—Revision 0: Initial Version
Equipment List ..............................................................................4
Test Procedure ...............................................................................4
Evaluation Board Schematics...........................................................5
Ordering Information .......................................................................7
Bill of Materials ..............................................................................7
Rev. 0 | Page 2 of 8
Evaluation Board User Guide UG-158
01943-002
HARDWARE DESCRIPTION
The evaluation board is designed to work with an external
VCO. The layout accommodates loop filter components and
also has an op amp (OP27) for an active filter, if needed. The
silk screen for the evaluation board is shown in Figure 2. The
board schematic is shown in Figure 3 and Figure 4.
The board is powered from a single external 15 V supply. The
power supply circuitry allows the user to choose either 3 V or
5 V for the ADF4007 V
OP27 V
V
is 12 V. It is very important to note that the ADF4007
CC
should never exceed 3.3 V or the ADF4007 VP, whichever
DD
. The ADF4007 VDD is 3.0 V, and the
P
is less. Doing so can damage the device.
VTUNE is available at an output SMA connector. This should
be connected to an external VCO board. The output of this board
should then be connected back into the EVAL-ADF4007EBZ1 at
RFIN. This is split into two equal power levels with one going to
RFOUT and the other going to the RFIN of the ADF4007 to
close the loop in the PLL. The RFOUT can be fed to a spectrum
analyzer to test the output signal. It should have an amplitude of
6 dB down from the VCO specified output level.
Figure 2. Evaluation Board Silkscreen
Rev. 0 | Page 3 of 8
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