Evaluates: MAX2880
MAX2880 Evaluation Kit
General Description
The MAX2880 evaluation kit (EV kit) facilitates the evaluation
of the MAX2880 wide-band phase-locked loop (PLL). It is a
fully assembled and tested frequency synthesizer consist-
ing of the IC, 5840MHz to 6040MHz external VCO, 50MHz
TCXO, passive-loop filter, and low-dropout regulators.
A software application, running on a PC with Windows
XP® or later Windows® operating system, simplifies the
control of the IC in various operating modes and features.
EV Kit Contents
The EV kit package contains the following:
• EV kit board
• Maxim INTF-3000-to-USB interface board
• 20-pin ribbon cable for connecting EV kit to
INTF-3000 board
The content of this document includes:
• Brief test procedure to verify functionality
• Description of the EV kit circuit and circuit schematic
• List of EV kit components and artwork for each PCB
layer
Features
●Easy Evaluation of the MAX2880
●All Critical Peripheral Components Included
●PC-Based Control Software
●Proven PCB Layout
●Fully Assembled and Tested
Quick Start
Required Equipment
• +6.0V power supply, capable of delivering 150mA
• USB cable, type A to type B
• Windows PC
• Signal source analyzer or spectrum analyzer
• Power cables and an SMA-terminated, 50Ω RF cable
19-6919; Rev 0; 2/14
Ordering Information appears at end of data sheet.
Windows and Windows XP are registered trademarks and
registered service marks of Microsoft Corporation.
Figure 1. EV Kit Setup Block Diagram
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MAX2880 Evaluation Kit
Procedure
Follow the steps below to verify board operation:
1) Verify that all jumpers are in their default positions, as
shown in Figure 2.
2) Connect the 20-pin cable between the INTF-3000
board and the EV kit; verify the pin 1-1 connections,
as shown in Figure 2.
3) Connect the USB cable from the PC to the INTF-3000
board.
4) With its output disabled, set the DC power supply to
+6.0V. Connect the DC power supply (with a compli-
ance limit of 150mA) to the banana plugs labeled
VSUPPLY and GNDSUPPLY.
5) Connect an RF cable from the VCOOUT SMA con-
nector to a signal analyzer or spectrum analyzer.
6) Visit www.maximintegrated.com, search for
MAX2880EVK, and download the latest EK kit soft-
ware installation file. Run the installation file.
7) Turn on the DC power supply to power on the EV kit
board.
8) Run MAX2880.exe to launch the EV kit GUI (Figure
3). In the lower right corner, verify that the USB
Online box is green.
9) In the EV kit GUI, click on Defaults and then Send
All button. In the lower right corner, verify that the
PLL Lock indicator is green
10) Use a signal analyzer to verify the performance of
the EV kit. Under the default setting, the user should
expect to see similar output as the TOC07 plot in
the Typical Operating Characteristics section in the
MAX2880 IC data sheet.
11) The user can also open two more preload register
settings (fractional low-noise mode and fractional
low-spur mode) from the Settings - Load menu, then
hit the Send All button.
12) To input a new output frequency, update the fVco edit
box and then hit Enter on the keyboard.
Figure 2. Hardware Setup and Default Jumper Pposition
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MAX2880 Evaluation Kit
Figure 3. MAX2880 EV Kit GUI
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MAX2880 Evaluation Kit
Detailed Description of Hardware
The MAX2880 EV kit is a complete frequency synthe-
sizer consisting of the MAX2880 PLL, on-board 6000MHz
VCO, 50MHz TCXO frequency reference, and 3rd-order
passive-loop filter. The EV kit is configured with a narrow-
band, high-performance 6000MHz VCO to demonstrate
the IC performance across the 5840MHz to 6040MHz
frequency range.
The EV kit input and output interfaces use standard 50Ω
SMA connectors. The board also includes the necessary
peripheral components and functions needed to power,
monitor, and control the IC, including linear power regula-
tors, LED indicators, and SPI bus.
To simplify the test setup, the EV kit is configured to oper-
ate from a single 5.5V to 6.5V power supply. The 5.5V
to 6.5V input voltage range is governed by the chosen
on-board LDOs (U6 and U7) and not by the IC. The EV
kit can be reconfigured to bypass the on-board LDOs and
run off separate 3V and 5V supplies.
The EV kit can be modified to evaluate the IC at operating
frequencies ranging from 250MHz up to 12.4GHz using
an external VCO. This topic is addressed in a dedicated
application note. Contact the factory for details.
Component List
DESIGNATION QTY DESCRIPTION
3V_EXT,
5V_EXT 2Small red test points
Keystone 5000
C1, C16, C18–
C20, C27, C28,
C38, C45
9
0.01μF ±10%, 50V X7R ceramic
capacitors (0402)
Murata GRM155R71H103K
C2 1
0.1μF ±10%, 50V X7R ceramic
capacitor (0402)
Murata GRM155R71H104K
C3 1
1000pF ±5%, 50V C0G ceramic
capacitor (0402)
Murata GRM1555C1H102J
C4, C101,
C102 0Not installed, ceramic capacitors
(0603)
C5, C6 2
100pF ±5%, 25V C0G ceramic
capacitors (0201)
Murata GRM0335C1E101J
C7, C9, C11,
C13, C15, C21,
C23, C26
8
100pF ±5%, 50V C0G ceramic
capacitors (0402)
Murata GRM1555C1H101J
C8, C10, C12,
C14, C22, C25 0Not installed, ceramic capacitors
(0402)
C17, C41, C48 3
1μF ±10%, 50V X7R ceramic
capacitors (0805)
Murata GRM21BR71H105K
C24, C30, C32,
C34, C39, C46 6
4.7μF ±10%, 50V X7R ceramic
capacitors (1206)
Murata GRM31CR71H475K
C29, C31, C33,
C37, C40, C42,
C44, C47, C49
9
0.1μF ±10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
DESIGNATION QTY DESCRIPTION
C35 1 10μF tantalum capacitor (C case)
AVX TPSC106K016R
C36, C43 2
10μF ±10%, 25V X7R ceramic
capacitors (1206)
Murata GRM31CR71E106K
CE, CLK,
DATA, LE,
MUX_OUT,
PHASE_ADJ,
REF_IN,
TUNE_TP
8Small white test points
Keystone 5002
D1–D3 3 Green LEDs (0603)
LT L29S-P2R1-25-Z
D4 1 Generic axial-lead diode
1N4001
GND1–GND4 4 Small black test points
Keystone 5001
GNDSUPPLY 1 Black banana plug
Deltron 571-0100-01
J1 1
20-pin male header (2 x 10),
0.100in spacing
Sullins PEC36DAAN
JP1, JP3,
JP5–JP8 6
3-pin male headers (1 x 3),
0.100in spacing
Sullins PEC36SAAN
JP2, JP4, JP9 3
2-pin male headers (1 x 2),
0.100in spacing
Sullins PEC36SAAN
R1, R21, R22 35.11kΩ ±1% resistors (0402)
R2A, R18 2100Ω ±1% resistors (0402)
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Component List (continued)
Component Suppliers
Note: Indicate that you are using the MAX2880 when contacting these component suppliers.
*EP = Exposed pad.
DESIGNATION QTY DESCRIPTION
R2B, R11, R12,
R25–R27, R32,
R35, R102
0 Not installed, resistors (0402)
R3 147.5Ω ±1% resistor (0402)
R7–R9 316.9Ω ±1% resistors (0201)
R4, R5,
R10, R24 40Ω ±1% resistors (0402)
R6 149.9Ω ±1% resistor (0201)
R13–R16, R19,
R20, R28–R30,
R33, R36
11 1kΩ ±5% resistors (0402)
R17, R23, R31,
R34 410kΩ ±5% resistors (0402)
REFIN, TUNE,
VCOIN,
VCOOUT
4
PCB edge-mount SMA RF
connectors
Johnson 142-0741-856
U1 1
High-performance PLL
(20 TQFN-EP*)
Maxim MAX2880ETP+
DESIGNATION QTY DESCRIPTION
U2 1 TCXO
Connor Wineld CWX823-050.0M
U3 1 Low-noise op amp (8 SO)
Maxim MAX9632ASA+
U4 1
5840MHz to 6040MHz VCO (0.5V
to 4.5V tuning)
ZCOMM V940ME28-LF
U5 1 Hex buffer/driver
TI SN74LV07ADR
U6 1 3.3V regulator (5 SOT23)
Maxim MAX8867EUK33+
U7 1 5.0V regulator (5 SOT23)
Maxim: MAX8867EUK50+
VCC_OPAMP,
VCC_VCO 2Small yellow test points
Keystone 5004
VSUPPLY 1 Red banana plug
Deltron 571-0500-01
— 1 PCB: MAX2880 EVKIT#
SUPPLIER PHONE WEBSITE
AVX Corporation 843-946-0238 www.avxcorp.com
Fair-Rite Products Corp. 845-895-2055 www.fair-rite.com
Murata Americas 847-803-6100 www.murataamericas.com
Texas Instruments Inc. 972-644-5580 www.ti.com
Z-Communications 858-621-2700 www.zcomm.com
Connor-Wineld 630-851-4722 www.conwin.com
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MAX2880 Evaluation Kit
Figure 4a. MAX2880 EV Kit Schematic (Sheet 1 of 2)
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MAX2880 Evaluation Kit
Figure 4b. MAX2880 EV Kit Schematic (Sheet 2 of 2)
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Figure 5. MAX2880 EV Kit Component Placement—Component Side
Figure 6. MAX2880 EV Kit PCB Layout—Top Layer
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Figure 7. MAX2880 EV Kit PCB Layout—2nd Layer
Figure 8. MAX2880 EV Kit PCB Layout—3rd Layer
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#Denotes RoHS compliant.
Figure 9. MAX2880 EV Kit PCB Layout—Bottom Layer
PART TYPE
MAX2880EVKIT# EV kit
Ordering Information
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2014 Maxim Integrated Products, Inc.
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MAX2880 Evaluation Kit
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 2/14 Initial release —
Revision History
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
