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UG-123
Evaluation Board for Fractional-N PLL Frequency Synthesizer
FEATURES
Self-contained board including synthesizer, VCO, 10 MHz
TCXO reference, USB interface, voltage regulators, and
loop filter (5.8 GHz)
Designed for 10 MHz PFD frequency, minimum charge pump
current, and 20 kHz loop bandwidth
Accompanying software allows control of synthesizer
functions from a PC (via USB interface)
Battery operated: choice of 3 V or 5 V supplies
GENERAL DESCRIPTION
The EVAL-ADF4158EB1Z evaluates the performance of the
ADF4158 frequency synthesizer for phase locked loops (PLL).
A digital picture is shown in Figure 1. It contains the ADF4158
synthesizer, a PC connector, SMA connectors for the power
supplies, and an RF output. There is also a low pass loop filter
(20 kHz) and a VCO (Z Communications, Inc., VCO940ME03
5.8 GHz) on board. The evaluation board is set up for a 10 MHz
PFD comparison frequency. An on-board TCXO provides the
10 MHz reference frequency. A USB cable is included with the
board to connect to a PC USB port.
The package also contains Windows® software (2000- and XPcompatible) to allow easy programming of the synthesizer.
EVALUATION KIT CONTENTS
Antistatic bag with USB warning label (free issue by Analog
Devices, Inc.)
Fractional-N synthesizer CD (with USB control) (issue by
Analog Devices)
Evaluation board box (Europaks K-645/1) with EVAL-
ADF4158EB1Z barcode label
Wrapping material (antistatic bubble wrap)
DIGITAL PICTURE OF THE EVALUATION BOARD
Figure 1.
08972-001
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITIONS.
Rev. 0 | Page 1 of 12
UG-123 Evaluation Board User Guide
TABLE OF CONTENTS
Features .............................................................................................. 1
General Description ......................................................................... 1
Ordering Information .................................................................... 11
Bill of Materials ........................................................................... 11
Rev. 0 | Page 2 of 12
Evaluation Board User Guide UG-123
EVALUATION BOARD HARDWARE
OVERVIEW
The EVAL-ADF4158EB1Z is supplied with a cable for
connecting to the USB port of a PC. The silk screen for the
evaluation board is shown in Figure 2. The board schematic
is shown in Figure 7, Figure 8, and Figure 9.
It is very important to note that the AV
pins of the ADF4158 should never exceed the V
ADF4158. This can cause damage to the device.
If the user wishes, external power supplies can be used. In this
case, insert SMA connectors as shown on the silk screen (see
Figure 2) and the digital picture (see Figure 1) of the evaluation
board.
LOOP FILTER
The loop filter schematic is included in the board schematic
in Figure 7, Figure 8, and Figure 9. The loop filter component
placements are clarified in Figure 3.
, DVDD, and SDVDD
DD
pin of the
P
Figure 2. Evaluation Board Silk Screen
POWER SUPPLIES
The board is powered from a single 9 V battery. The power
supply circuitry allows the user to choose 3 V for the AV
DV
, and SDVDD pins of the ADF4158 and either 3 V or 5 V
DD
for the V
default settings are 3 V for AV
for V
pin of the ADF4158 and for the VCO supply. The
P
, DVDD, and SDVDD and 5 V
DD
.
P
DD
C3 R1
R2 C2 C1
Figure 3. Loop Filter Placement
R2A
R1A
R3
08972-003
LOCAL OSCILLATOR COMPONENTS
The 10 MHz TCXO provides the reference frequency. The
on-chip R divider should be set to 1 so that the PFD frequency
is also 10 MHz. The PLL is made up of the 10 MHz TCXO, the
ADF4158, a passive loop filter (20 kHz bandwidth), and the
VCO V940ME03 VCO from Z Communications. The output is
available at RF
08972-002
The on-board loop filter has been designed for a charge pump
current of 0.3125 mA. ADIsimPLL, a free download available at
www.analog.com/pll, can be used to design other loop filters.
,
through a standard SMA connector.
OUT
Rev. 0 | Page 3 of 12
UG-123 Evaluation Board User Guide
EVALUATION SETUP
SPECTRUM ANALYZER
9V BATTERY
ONOFF
PC
5.8GHz VCO
RF
OUT
TCXO
EVAL-ADF4158EB1Z
REF
IN
MUXOUT
ADF4158
PC CONNECTOR
08972-007
Figure 4. Evaluation Setup
Rev. 0 | Page 4 of 12
Evaluation Board User Guide UG-123
EVALUATION BOARD SOFTWARE
The control software for EVAL-ADF4158EB1Z is on the CD
that accompanies the board. To set up the software, use the
following steps:
1. Click setup.exe.
2. The installation wizard appears. Follow the on-screen
instructions.
3. The software is installed in a default directory called
C:/Program Files/Analog Devices/ADF4x5x. To run
the software, click the .exe file. Ensure that Version 3.3
was downloaded (Help > About).
While starting the software, choose USB Port in the
Communication Selection section of the device window. The
EVAL-ADF4158EB1Z cannot be programmed by the parallel
port. Once the board is detected, a blue USB Detected box
appears in the bottom left corner of the main window (see
Figure 5).
MAIN WINDOW
In the main window, basic PLL settings can be chosen (see
Figure 5). Most important are the parameters in both RF
sections. Initially they are set to values that allow for correct
operation of the EVAL-ADF4158EB1Z. The RF VCO output
frequency should be within the range of the chosen VCO. The
PFD frequency should be the value for which the loop filter was
designed. REF
reference signal. For VCO frequencies below 3 GHz, use a
prescaler of 4/5 and for VCO frequencies above 3 GHz, use a
prescaler of 8/9
In the RF section on the right side, program the charge pump
current setting to the value for which the loop filter was
designed. Charge pump polarity should usually be positive
unless inverting active loop filter configuration is used. The
CSR Disabled/CSR Enabled button offers cycle slip reduction
(one of the fast-lock mechanisms). The RF Counter Reset Disabled/RF Counter Reset Enabled button brings PLL
counters out/in of the reset state. The CP 3 State Off/CP 3 State On button brings the charge pump out/in of tristate.
In the top left corner, the RF Powerdown Disabled/RF
Powerdow n Enabled button powers up/down the part. The
Program Fast Lock button is used for configuring switched-R
fast lock. The Fastlock Disabled/Fastlock Enabled button is
used for deactivating/activating switched-R fastlock. The LDP = 3 button is used for setting lock detect precision. Muxout
chooses the signal that is connected to the output of the
multiplexer.
In the bottom right corner, the FSK Setup button opens the
window for setting FSK modulation parameters, the
button opens the window for activating PSK modulation, the
Ramp Setup button programs ramps, and the Frequency Hop
button enables jumping between frequencies.
frequency should be the same as the applied
IN
PSK Setup
RAMP SETUP WINDOW
The Ramp Setup window chooses various types of ramps with
their specific options (see Figure 6). Ramp selection allows for
selecting a continuous triangular, sawtooth ramp, single sawtooth
burst ramp, or single ramp burst. Basic settings that configure a
ramp are located in the Deviation Frequency/No of Steps and Timer Setting sections. Deviation Frequency determines the
frequency step of a ramp, and Dev. Offset sets frequency resolu-
tion. Dev. Freq. Res. specifies is the smallest frequency deviation
that can be used. Use a small value of frequency resolution for
precise but short ramps and big value of frequency resolution
for long, but less precise ramps. The No. of steps text box determines the number of steps that comprise a ramp. The Timer
text boxes are used for setting the duration of a single step.
After choosing the aforementioned settings, activate the ramp
by clicking the Start Ramp button in the bottom right corner
of the software window.
The software also allows for evaluating other ADF4158 features:
frequency readback, dual ramp rates mode, ramp mode with
FSK signal on ramp, delayed start, and delay between ramps.
In the Dual Ramp Rates Mode section, program both Ramp1
and Ramp2. This is done by selecting On and Ramp1 first.
Once Ramp1 is selected, settings for this particular ramp
should be updated in the Deviation Frequency/No of Steps
and Timer Setting sections. Then select Ramp2; settings for
this ramp should also be updated in the Deviation Frequency/ No of Steps and Timer Setting sections.
In the Ramp Mode with FSK Signal on Ramp section, set
the deviation frequency of the FSK signal superimposed on a
ramp. Ramp settings are chosen in Deviation Frequency/No of Steps and Timer Setting sections.
The Delayed Start section chooses the delay of the ramp’s
start. The first option (Delay = t
selected for short delays (it also gives better resolution of time
delay). The second option (Delay = t
should be selected for long delays.
The Delay between Ramps section chooses the delay between
ramps. The first option (Delay = t
selected for short delays (it also gives better resolution of time
delay). The second option (Delay = t
should be selected for long delays. There is also a fast-lock
option in this section, which can be used for reducing the
overshoot in a sawtooth ramp.
Reference Designator DescriptionManufacturer/Part Number Supplier Stock Code
U1 Fractional-N frequency synthesizer Analog Devices ADF4158BCPZ ADF4158BCPZ
U2 Low dropout linear regulator Analog Devices ADP3300ARTZ-3 ADP3300ARTZ-3
U3 Low drop out linear regulator Analog Devices ADP3300ARTZ-5 ADP3300ARTZ-5
U4 IC EEPROM 64 kB 400 KHz Microchip Technologies24LC64-ISN Digi-Key 24LC64-I/SN-ND
U5 Low drop out linear regulator Analog Devices ADP3303ARZ-3.3 ADP3303ARZ-3.3
U6 USB microcontroller
Cypress Semiconductor
CY7C68013A-56LFXC
Y1 Voltage controlled oscillator Z Communication VCO V940ME03 VCO V940ME03
Y2 OSC_TCXO 10.0 MHz OSC_TCXO 801-BELF-100 Fox 801-BELF-100 (10 MHz)
Y3 XTAL-CM309S 24 MHz X24M000000S244 FEC 9509658
9 V PP3 battery GP1604-10 FEC 5057050
Rubber stick-on feet 4× SJ5076BLACK FEC 1165061
Bare PCB Analog Devices EVAL-ADF4158EB1Z EVAL-ADF4158EB1Z
Cable MINI-USB A to MINI-B 1M
Hirosi Electric Co., Ltd.
UX40-MB-5PA-1000-2003
Digi-Key 428-1669-ND
Digi-Key H2957-ND
ESD Caution
ESD (electrostatic discharge) sensitive device. Charged devices and circuit boards can discharge without detection. Although this product features patented or proprietary protection
circuitry, damage may occur on devices subjected to high energy ESD. Therefore, proper ESD precautions should be taken to avoid performance degradation or loss of functionality.
Legal Terms and Conditions
By using the evaluation board discussed herein (together with any tools, components documentation or support materials, the “Evaluation Board”), you are agreeing to be bound by the terms and conditions
set forth below (“Agreement”) unless you have purchased the Evaluation Board, in which case the Analog Devices Standard Terms and Conditions of Sale shall govern. Do not use the Evaluation Board until you
have read and agreed to the Agreement. Your use of the Evaluation Board shall signify your acceptance of the Agreement. This Agreement is made by and between you (“Customer”) and Analog Devices, Inc.
(“ADI”), with its principal place of business at One Technology Way, Norwood, MA 02062, USA. Subject to the terms and conditions of the Agreement, ADI hereby grants to Customer a free, limited, personal,
temporary, non-exclusive, non-sublicensable, non-transferable license to use the Evaluation Board FOR EVALUATION PURPOSES ONLY. Customer understands and agrees that the Evaluation Board is provided
for the sole and exclusive purpose referenced above, and agrees not to use the Evaluation Board for any other purpose. Furthermore, the license granted is expressly made subject to the following additional
limitations: Customer shall not (i) rent, lease, display, sell, transfer, assign, sublicense, or distribute the Evaluation Board; and (ii) permit any Third Party to access the Evaluation Board. As used herein, the term
“Third Party” includes any entity other than ADI, Customer, their employees, affiliates and in-house consultants. The Evaluation Board is NOT sold to Customer; all rights not expressly granted herein, including
ownership of the Evaluation Board, are reserved by ADI. CONFIDENTIALITY. This Agreement and the Evaluation Board shall all be considered the confidential and proprietary information of ADI. Customer may
not disclose or transfer any portion of the Evaluation Board to any other party for any reason. Upon discontinuation of use of the Evaluation Board or termination of this Agreement, Customer agrees to
promptly return the Evaluation Board to ADI. ADDITIONAL RESTRICTIONS. Customer may not disassemble, decompile or reverse engineer chips on the Evaluation Board. Customer shall inform ADI of any
occurred damages or any modifications or alterations it makes to the Evaluation Board, including but not limited to soldering or any other activity that affects the material content of the Evaluation Board.
Modifications to the Evaluation Board must comply with applicable law, including but not limited to the RoHS Directive. TERMINATION. ADI may terminate this Agreement at any time upon giving written notice
to Customer. Customer agrees to return to ADI the Evaluation Board at that time. LIMITATION OF LIABILITY. THE EVALUATION BOARD PROVIDED HEREUNDER IS PROVIDED “AS IS” AND ADI MAKES NO
WARRANTIES OR REPRESENTATIONS OF ANY KIND WITH RESPECT TO IT. ADI SPECIFICALLY DISCLAIMS ANY REPRESENTATIONS, ENDORSEMENTS, GUARANTEES, OR WARRANTIES, EXPRESS OR IMPLIED, RELATED
TO THE EVALUATION BOARD INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, TITLE, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF INTELLECTUAL
PROPERTY RIGHTS. IN NO EVENT WILL ADI AND ITS LICENSORS BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM CUSTOMER’S POSSESSION OR USE OF
THE EVALUATION BOARD, INCLUDING BUT NOT LIMITED TO LOST PROFITS, DELAY COSTS, LABOR COSTS OR LOSS OF GOODWILL. ADI’S TOTAL LIABILITY FROM ANY AND ALL CAUSES SHALL BE LIMITED TO THE
AMOUNT OF ONE HUNDRED US DOLLARS ($100.00). EXPORT. Customer agrees that it will not directly or indirectly export the Evaluation Board to another country, and that it will comply with all applicable
United States federal laws and regulations relating to exports. GOVERNING LAW. This Agreement shall be governed by and construed in accordance with the substantive laws of the Commonwealth of
Massachusetts (excluding conflict of law rules). Any legal action regarding this Agreement will be heard in the state or federal courts having jurisdiction in Suffolk County, Massachusetts, and Customer hereby
submits to the pers onal jurisdiction and venu e of such courts. The United Nations Conventi on on Contracts for the Internation al Sale of Goods shall not apply to this Agreement and is expressly disclaimed.