MAX3580EVKIT [MAXIM]
3.1V to 3.5V Single-Supply Operation;
| 型号： | MAX3580EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | 3.1V to 3.5V Single-Supply Operation |
| 文件： | 总7页 (文件大小：376K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-0845; Rev 0; 7/07
MAX3580 Evaluation Kit
Evluates:MAX3580
General Description
Features
o Easy Evaluation of the MAX3580
The MAX3580 evaluation kit (EV kit) simplifies evaluation
of the MAX3580 direct-conversion tuner. It enables
testing of the device’s performance and requires no
additional support circuitry. Standard 50Ω SMA and
BNC connectors are included on the EV kit for the
inputs and outputs to allow quick and easy evaluation
on the test bench. The EV kit is fully assembled and
tested at the factory.
o +3.1V to +3.5V Single-Supply Operation
o 50Ω SMA Connector on the RF Ports
o 50Ω BNC Connector for the Baseband Output
Ports
o Jumpers for Automatic Gain Control
o All Critical Peripheral Components Included
o Parallel Port for I2C Interfacing
This document provides a list of equipment required to
evaluate the device, a straightforward test procedure to
verify functionality, a description of the EV kit circuit, the
circuit schematic, a bill of materials (BOM) for the kit, and
artwork for each layer of the printed-circuit board (PCB).
o PC Control Software Available at
www.maxim-ic.com
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX3580EVKIT+
-40°C to +85°C
32 QFN-EP*
+Denotes a lead-free and RoHS-compliant EV kit.
*EP = Exposed paddle.
Component List
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
C136, C147, C149,
C151, C156,
10µF 10ꢀ tantalum capacitor
(C-case)
AVX TAJC106K016
10nF 10ꢀ capacitors (0603)
Murata GRM188R71H103K
7
C167
1
C162, C178
47pF 5ꢀ capacitor (0603)
Murata GRM1885C1H470J
330pF 5ꢀ capacitors (0603)
Murata GRM1885C1H331J
C137
1
6
2
C172–C176
J30, J31
5
2
C138, C143, C153,
C157, C160, C164
1000pF 10ꢀ capacitors (0603)
Murata GRM188R71H102K
BNC PCB receptacle (jack) post
terminals, 4 legs, 433 mils
(11.0mm)
27pF 5ꢀ capacitors (0603)
Murata GRM1885C1H270J
C139, C163
Amphenol 31-5329-52RFX
J33
J34
0
1
Not installed
C140, C141, C145,
C159, C165, C169,
C177, C179, C180
DB25 horizontal male PCB
connector
AMP HD-20 Series 5747238-4
0
8
Not installed, capacitors
C142, C148, C152,
C158, C166, C168,
C170, C171
100nF 10ꢀ capacitors (0603)
Murata GRM188R71E104K
SMA end-launch jack
receptacles, 0.062in
Johnson 142-0701-801
J35, J36
2
2.2µF 10ꢀ capacitors (0603)
Murata GRM188R61A225K
C146, C154
C150, C155
C161
2
2
1
JP34–JP40
JP41–JP44
0
4
Not installed
In-line headers, 100-mil center
Sullins PEC36SAAN
2200pF 10ꢀ capacitors (0603)
Murata GRM188R71H222K
390nH 5ꢀ CS inductor (0603)
Coilcraft 0603CS-R39XJL
470nF 10ꢀ capacitor (0603)
Murata GRM188R61A474K
L13
1
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX3580 Evaluation Kit
Component List (continued)
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
L14
QTY
DESCRIPTION
R138, R139
2
49.9Ω 1ꢀ resistors (0603)
68nH 5ꢀ inductor (0603)
Coilcraft 0603CS-68NXJL
1
0
4
MAX4453ESA+ single-supply op
amps with rail-to-rail outputs
U13, U14
U15
2
1
L15, L16
Not installed, inductors
MAX3580ETI+
R112, R123,
R127, R128
1kΩ 5ꢀ resistors (0603)
Hex buffer/driver
Texas Instruments
SN74LV07ADB
U16
1
1
R113, R114, R115,
R120, R121
5
6
100Ω 5ꢀ resistors (0603)
2.7kΩ 5ꢀ resistors (0603)
20MHz crystal
Citizen America HCM49-
20.000MABJ-UT
R116, R117, R118,
R125, R126, R136
Y4
R119
1
3
2
270Ω 5ꢀ resistor (0603)
10kΩ 5ꢀ resistors (0603)
5.1kΩ 5ꢀ resistors (0603)
FREF3, MUX3
0
7
Not installed
R122, R133, R137
R124, R129
I-3, I+3, Q-3, Q+3,
J28, J29, J32
PC mini (red)
Keystone 5000
R130, R131, R132,
R134, R140–R145,
R147, R148
Shorting jumpers (JP42, JP43)
Sullins SSC02SYAN
0
2
Not installed, resistors
—
—
2
1
Evluates:MAX3580
PCB: MAX3580EVKIT+
R135, R146
0Ω 5ꢀ resistors (0603)
Component Suppliers
SUPPLIER
AVX Corp.
PHONE
FAX
WEBSITE
www.avxcorp.com
www.coilcraft.com
www.murata.com
www.ti.com
843-448-9411
847-639-6400
770-436-1300
800-336-5236
843-448-7139
847-639-1469
770-436-3030
—
Coilcraft Inc.
Murata Mfg. Co., Ltd.
Texas Instruments Inc.
Note: Indicate that you are using the MAX3580 when contacting these component suppliers.
•
•
A power supply capable of up to 1A at +2.7V to +6.0V
Quick Start
One ammeter for measuring the supply current
(optional)
Recommended Equipment
This section lists the recommended test equipment to
verify operation of the MAX3580. It is intended as a
guide only, and some substitutions are possible:
•
•
50Ω SMA cables
A network analyzer (e.g., HP 8753D) to measure
small-signal return loss and gain (optional)
•
•
•
•
One RF signal generator capable of delivering at
least +5dBm of output power at the operating fre-
quency (HPE4433B or equivalent)
Procedure
Measurement Considerations
One RF power sensor capable of handling at least
+20dBm of output power at the operating frequency
(HP 8482A or equivalent)
The MAX3580 EV kit includes on-board buffers that
convert I/Q differential outputs to single-ended outputs
(see Figure 1 for details). The buffers are configured for
a gain of one. The output of each buffer consists of a
50Ω resistor in series for matching to RF test equip-
ment. Note that there is a 6dB loss at the output ports
of the EV kit if 50Ω test equipment is used. This loss
must be accounted for when measuring gain.
One RF power meter capable of measuring up to
+20dBm of output power at the operating frequency
(HP 437B or equivalent)
An RF spectrum analyzer that covers the MAX3580
operating-frequency range (e.g., FSEB20)
2
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MAX3580 Evaluation Kit
Evluates:MAX3580
On-board matching circuitry and a diplexer can be
placed at the paths of the MAX3580 inputs. For matching
a 50Ω source to a 75Ω input, place an impedance-
conversion resistor network using available component
layout footprints (i.e., R148 and R146). Note that the
input power to the device must be adjusted to account
for the power loss of the resistor network. To implement
a UHF and VHF simple diplexer, refer to the Front-End
Diplex Filter for MAX3580 application note, available at
www.maxim-ic.com/appnotes.cfm/an_pk/3700.
quency to 10MHz when using the on-board
20MHz crystal).
c) Select for AutoTuner ON (this allows the soft-
ware to pick the appropriate divider and to
select the appropriate VCO for the entered LO
frequency).
d) Select for the appropriate RFIN or RFIN2 input
on the Block Diagram section of the software.
e) Enter the desired LO frequency.
f) Based on the LO frequency, the EV kit software
automatically sets the appropriate tracking filter
setting.
Connections and Setup
The MAX3580 EV kit is fully assembled and tested. This
section provides a step-by-step guide to operating the
EV kit and testing the device’s function. Caution: Do
not turn on the DC power or RF signal generators
until all connections are made.
g) Activate and set the power level of the RF gene-
rator to achieve 1V
at the IF connector out-
P-P
puts, or 0.5 V
P-P
(-2dBm) when loaded by a
50Ω instrument. Note the 6dB loss at the output
ports of the EV kit due to the 50Ω resistor in
series at the buffer outputs, and the 50Ω load
of the test equipment.
1) Verify that all jumpers are in place (i.e., JP43 to set
ADDR2 for the device’s address).
2) Connect a DC supply set to +3.3V (through an
ammeter if desired) to the VCC and GND terminals
on the EV kit. Do not turn on the supply.
h) Check the I/Q outputs.
3) Connect a DC supply set to +2.85V (maximum
gain) to the RF_AGC terminal on the EV kit. Do not
turn on the supply.
Gain Control
The RF and baseband VGA circuits of the MAX3580
are controlled independently through jumpers JP41
and JP44, respectively. Connecting pins 2-3 of JP41
closes the RF gain control loop.
4) Connect a DC supply set to +2.85V (maximum
gain) to the BB_AGC terminal on the EV kit. Do not
turn on the supply.
Layout Issues
5) Connect one RF signal generator to the RFIN/RFIN2
SMA connector. Do not turn on the generator’s out-
put.
A good PCB is an essential part of an RF circuit design.
The EV kit PCB serves as a guide for laying out a board
using the MAX3580. Keep traces carrying RF signals
as short as possible to minimize radiation and insertion
loss. Use impedance control on all RF signal traces.
The exposed paddle must be soldered evenly to the
board’s ground plane for proper operation. Use abun-
dant vias beneath the exposed paddle and between RF
traces to minimize undesired RF coupling.
6) Connect either of the I/Q baseband outputs on the
EV kit to a spectrum analyzer through a BNC cable.
7) Connect the EV kit board to the PC through a parallel
cable.
8) Turn on the DC supply. The supply current should
read approximately 190mA.
To minimize coupling between different sections of the
IC, each VCC pin must have a bypass capacitor with a
low-impedance path to the closest ground at the fre-
quency of interest. Do not share ground vias among
multiple connections to the PCB ground plane. Refer to
the Power-Supply Layout section of the MAX3580 data
sheet for more information.
9) Run the control software on an IBM-compatible PC.
Using the control software, configure the following:
a) Select the Register section of the EV kit soft-
ware. Program the registers to the defined ope-
rational state as per Table 2 of the MAX3580
data sheet. Refer to the MAX3580 data sheet for
more information.
b) On the Synthesizer section of the software, set
R Divider = 2 (this sets the comparison fre-
_______________________________________________________________________________________
3
MAX3580 Evaluation Kit
Evluates:MAX3580
B B Q +
B B Q -
Figure 1. MAX3580 EV Kit Schematic
4
_______________________________________________________________________________________
MAX3580 Evaluation Kit
Evluates:MAX3580
Figure 2. MAX3580 EV Kit Component Placement Guide—Component Side
_______________________________________________________________________________________
5
MAX3580 Evaluation Kit
Evluates:MAX3580
Figure 3. MAX3580 EV Kit PCB Layout—Component Side
6
_______________________________________________________________________________________
MAX3580 Evaluation Kit
Evluates:MAX3580
Figure 4. MAX3580 EV Kit PCB Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ______________________________ 7
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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