MAX7033EUI-T [MAXIM]
Telecom Circuit, 1-Func, CMOS, PDSO28, 4.40 MM, MO-153AE, TSSOP-28;
| 型号： | MAX7033EUI-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Telecom Circuit, 1-Func, CMOS, PDSO28, 4.40 MM, MO-153AE, TSSOP-28 |
| 文件： | 总7页 (文件大小：214K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-3917; Rev 0; 12/05
MAX7033 Evaluation Kit
General Description
Features
♦ Proven PC Board Layout
The MAX7033 evaluation kit (EV kit) allows for a
detailed evaluation of the MAX7033 superheterodyne
receiver. It enables testing of the device’s RF perfor-
mance and requires no additional support circuitry. The
RF input uses a 50 matching network and an SMA
connector for convenient connection to test equipment.
The EV kit can also directly interface to the user’s
embedded design for easy data decoding.
♦ Proven Components Parts List
♦ Multiple Test Points Provided On Board
♦ Available in 315MHz or 433.92MHz Optimized
Versions
♦ Adjustable Frequency Range from 300MHz to
450MHz*
The MAX7033 EV kit comes in two versions: 315MHz
and 433.92MHz. The passive components are opti-
mized for these frequencies. These components can
easily be changed to work at RF frequencies from
300MHz to 450MHz. In addition, the received data rate
can be adjusted from 0 to 66kbps by changing three
more components.
♦ Fully Assembled and Tested
♦ Can Operate as a Stand-Alone Receiver with the
Addition of an Antenna
*Requires component changes.
Ordering Information
For easy implementation into the customer’s design,
the MAX7033 EV kit also features a proven PC board
layout, which can be easily duplicated for quicker time
to market. The EV kit Gerber files are available for
download at www.maxim-ic.com.
PART
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
IC PACKAGE
28 TSSOP
MAX7033EVKIT-315
MAX7033EVKIT-433
28 TSSOP
Component List
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
0.1µF 5% ceramic capacitors
(0603)
0.01µF 10% ceramic capacitors
(0603)
C12, C20, C24
2
C1, C2, C23
2
Murata GRM188R71C104KA01
Murata GRM188R71H103KA01
1500pF 10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H152KA01
C13, C16, C18,
C19
0
2
Not installed
C3
C4
1
1
1
2
3
1
1
15pF 5%, 50V ceramic capacitors
(0603)
Murata GRM1885C1H150JZ01
0.47µF 80% to 20% ceramic
capacitor (0603)
Murata GRM188F51C474ZA01
C14, C15
C17
Not installed, 0.01µF 80% to 20%
ceramic capacitor (0603)
Murata GRM188R71H103KA01
470pF 5% ceramic capacitor
(0603)
Murata GRM1885C1H471JA01
0
1
C5
10pF 5%, 50V ceramic capacitor
(0603)
Murata GRM1885C1H100JZ01
220pF 5% ceramic capacitors
(0603)
Murata GRM1885C1H221JA01
C21
C6, C10
C7, C8, C11
1000pF 10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H102KA01
100pF 5% ceramic capacitors
(0603)
Murata GRM1885C1H101JA01
C22
1
Not installed, SMA connector,
edge mount
Johnson 142-0701-801
4.0pF 0.1pF ceramic capacitor
(0603)
Murata GRM1885C1H4R0BZ01
C9
(315MHz)
F_IN
0
4
3-pin headers
Digi-Key S1012-36-ND or
equivalent
2.2pF 0.1pF ceramic capacitor
(0603)
Murata GRM1885C1H2R2BD01
JU1, JU2, JU5,
JU6
C9
(433MHz)
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX7033 Evaluation Kit
Component List (continued)
DESIGNATION
QTY
DESCRIPTION
resistor (0603)
DESIGNATION
JU3, JU4
JU7
QTY
DESCRIPTION
Not installed
R7
R8
1
1
0
0
1
1
10k resistor (0603), any
2-pin header
Shorted
JU8
SMA connector, top mount
Digi-Key J500-ND
Johnson 142-0701-201
RF_IN
1
L1
(315MHz)
27nH 5% inductor (0603)
Coilcraft 0603CS-27NXJB
1
1
1
1
1
TP2, TP4–TP12
0
6
Not installed
L1
(433MHz)
15nH 5% inductor (0603)
Coilcraft 0603CS-15NXJB
VDD, GND, SHDN,
AGC C,
DATA_OUT, TP3
Test points
Mouser 151-203 or equivalent
L2
(315MHz)
120nH 5% inductor (0603)
Coilcraft 0603CS-R12XJB
4.754687MHz crystal
Hong Kong Crystals
SSL4754687E03FAFZ8A0 or
Crystek 016867
L2
(433MHz)
56nH 5% inductor (0603)
Coilcraft 0603CS-56NXJB
Y1
(315MHz)
1
15nH 5% inductor (0603)
Murata LQG18HN15NJ00
L3
6.6128MHz crystal
Y1
(433MHz)
Hong Kong Crystals
SSL6612813E03FAFZ8A0 or
Crystek 016868
Not installed, SMA connector, top
mount
Digi-Key J500-ND
1
1
MIX_OUT
0
Johnson 142-0701-201
10.7MHz ceramic filter
Murata SFTLA10M7FA00-B0
Y2
R1
1
0
5.1k resistor (0603), any
U1
—
1
1
MAX7033EUI
R2, R4, R6
Not installed, resistors (0603)
MAX7033 EV kit PC board
Not installed, 270 resistor (0603)
any
R3
R5
0
1
Shunts (JU1)
Digi-Key S9000-ND or equivalent
—
5
10k resistor (0603), any
2) Connect the RF signal generator to the RF_IN SMA
connector. Do not turn on the generator output. Set
the generator for an output frequency of 315MHz
(or 433.92MHz) at a power level of -100dBm. Set
the modulation of the generator to provide a 2kHz,
100%, AM-modulated square wave (or a 2kHz
pulse-modulated signal).
Quick Start
The following procedures allow for proper device
evaluation.
Required Test Equipment
Regulated power supply capable of providing
+3.3V
•
•
3) Connect the oscilloscope to test point TP3.
RF signal generator capable of delivering from
-120dBm to 0dBm of output power at the operating
frequency, in addition to AM or pulse-modulation
capabilities (Agilent E4420B or equivalent)
4) Turn on the DC supply. The supply current should
read approximately 5mA.
5) Activate the RF generator’s output without modula-
tion. The scope should display a DC voltage that
varies from approximately 1.2V to 2.0V as the RF
generator amplitude is changed from -115dBm to
0dBm. (Note: At an amplitude of around -60dBm,
this DC voltage drops suddenly to approximately
1.5V and then starts rising again with increasing
input amplitude. This is normal; the AGC is turning
on the LNA gain-reduction resistor.)
•
•
Optional ammeter for measuring supply current
Oscilloscope
Connections and Setup
This section provides a step-by-step guide to operating
the EV kit and testing the device’s functionality. Do not
turn on the DC power or RF signal generator until all
connections are made:
1) Connect a DC supply set to +3.3V (through an
ammeter if desired) to the VDD and GND terminals
on the EV kit. Do not turn on the supply.
6) Set the RF generator to -100dBm. Activate the RF
generator’s modulation and set the scope’s cou-
2
_______________________________________________________________________________________
MAX7033 Evaluation Kit
To reduce the parasitic inductance, use wider traces
and a solid ground or power plane below the signal
traces. Also, use low-inductance connections to ground
on all GND pins, and place decoupling capacitors
close to all VDD connections.
Component Suppliers
SUPPLIER
Coilcraft
PHONE
FAX
800-322-2645
800-237-3061
852-2412 0121
800-831-9172
847-639-1469
941-561-1025
852-2498 5908
814-238-0490
Crystek
The EV kit PC board can serve as a reference design for
laying out a board using the MAX7033. All required com-
ponents have been enclosed in 1.25in x 1.25in2, which
can be directly “inserted” in the application circuit.
Hong Kong Crystal
Murata
Note: Indicate that you are using the MAX7033 when contact-
ing these component suppliers.
Detailed Description
pling to AC. The scope now displays a lowpass-fil-
tered square wave at TP3 (filtered analog base-
band data). Use the RF generator’s LF OUTPUT
(modulation output) to trigger the oscilloscope.
Power-Down Control
The MAX7033 can be controlled externally using the
SHDN connector. The IC draws approximately 2.5µA in
shutdown mode. Jumper JU1 is used to control this
mode. The shunt can be placed between pins 2 and 3
for continuous shutdown, or pins 1 and 2 for continuous
operation. Remove JU1 shunt for external control. See
Table 1 for the jumper function descriptions.
7) Monitor the DATA_OUT terminal and verify the pres-
ence of a 2kHz square wave.
Additional Evaluation
1) With the modulation still set to AM, observe the
effect of reducing the RF generator’s amplitude on
the DATA_OUT terminal output. The error in this
sliced digital signal increases with reduced RF sig-
nal level. The sensitivity is usually defined as the
point at which the error in interpreting the data (by
the following embedded circuitry) increases
beyond a set limit (BER test).
Table 1. Jumper Function
JUMPER STATE
FUNCTION
Normal operation
1-2
JU1
JU2
JU3
JU4
JU5
2-3
N.C.
1-2
Power-down mode
2) With the above settings, a 315MHz-tuned EV kit
should display a sensitivity of about -114dBm (0.2%
BER) while a 433.92MHz kit displays a sensitivity of
about -112dBm (0.2% BER). Note: The above sensi-
tivity values are given in terms of average.
External power-down control
Crystal divide ratio = 32
Crystal divide ratio = 64
Mixer output to MIX_OUT
External IF input
2-3
1-2
2-3
3) Capacitors C5 and C6 are used to set the corner
frequency of the 2nd-order lowpass Sallen-Key
data filter. The current values were selected for bit
rates up to 3kbps. Adjusting these values accom-
modates higher data rates (refer to the MAX7033
data sheet for more details).
N.C.
1-2
Normal operation
Uses PDOUT for faster receiver startup
GND connection for peak detector filter
Disable AGC
2-3
1-2
2-3
Enable AGC
Layout Issues
N.C.
1-2
External control of AGC lock function
IR centered at 433MHz
IR centered at 315MHz
IR centered at 375MHz
Connect VDD to +3.3V supply
Connect VDD to +5.0V supply
A properly designed PC board is an essential part of
any RF/microwave circuit. On high-frequency inputs
and outputs, use controlled-impedance lines and keep
them as short as possible to minimize losses and radia-
tion. At high frequencies, trace lengths that are on the
order of /10 or longer can act as antennas.
JU6
JU7
2-3
N.C.
1-2
N.C.
Keeping the traces short also reduces parasitic induc-
tance. Generally, 1in of a PC board trace adds about
20nH of parasitic inductance. The parasitic inductance
can have a dramatic effect on the effective inductance.
For example, a 0.5in trace connecting a 100nH induc-
tor adds an extra 10nH of inductance or 10%.
_______________________________________________________________________________________
3
MAX7033 Evaluation Kit
Power Supply
The MAX7033 can operate from 3.3V or 5V supplies.
For 5V operation, remove JU7 before connecting the
supply to VDD. For 3.3V operation, connect JU7.
Test Points and I/O Connections
Additional test points and I/O connectors are provided
to monitor the various baseband signals and for exter-
nal connections. See Tables 2 and 3 for a description.
For additional information and a list of application
notes, visit www.maxim-ic.com.
IF Input/Output
The 10.7MHz IF can be monitored with the help of a
spectrum analyzer using the MIX_OUT SMA (not provid-
ed). Remove the ceramic filter for such a measurement
and include R3 (270 ) and C17 (0.01µF) to match the
330 mixer output with the 50 spectrum analyzer.
Jumper JU3 needs to connect pins 1 and 2. It is also
possible to use the MIX_OUT SMA to inject an external
IF as a means of evaluating the baseband data slicing
section. Jumper JU3 needs to connect pins 2 and 3.
Table 2. Test Points
TP
2
DESCRIPTION
Data slicer negative input
3
Data filter output
Peak detector out
+3.3V
4
5
6
GND
F_IN External Frequency Input
For applications where the correct frequency crystal is
not available, it is possible to directly inject an external
frequency through the F_IN SMA (not provided).
Connect the SMA to a function generator. The addition
of C18 and C19 is necessary (use 0.01µF capacitors).
7
Data filter feedback node
Data out
8
9
Power-down select input
VDD
10
11
12
AGC control
Crystal select
AGC Control
Jumper JU5 controls whether the AGC is enabled.
Connect pins 2 and 3 to enable the AGC. In addition,
by removing the jumper, the AGC setting can be
locked or unlocked by transitioning the AC pin while the
SHDN pin is high.
Table 3. I/O Connectors
SIGNAL
RF_IN
DESCRIPTION
RF input
Crystal Select
Jumper JU2 controls the crystal-divide ratio.
Connecting pins 1 and 2 sets the divide ratio to 32,
while connecting pins 2 and 3 sets the ratio to 64. This
determines the frequency of the crystal to be used.
F_IN
External reference frequency input
IF input/output
MIX_OUT
GND
Ground
VDD
Supply input
Image-Rejection Frequency Select
A unique feature of the MAX7033 is its ability to vary at
which frequency the image rejection is optimized. JU6
allows the selection of three possible frequencies:
315MHz, 375MHz, and 433.92MHz. See Table 1
for settings.
DATA_OUT
SHDN
Sliced data output
External power-down control
AGC control
AGC_C
4
_______________________________________________________________________________________
MAX7033 Evaluation Kit
Figure 1. MAX7033 EV Kit Schematic
_______________________________________________________________________________________
5
MAX7033 Evaluation Kit
Figure 3. MAX7033 EV Kit PC Board Layout—Component Side
Figure 2. MAX7033 EV Kit Component Placement Guide—
Component Side
6
_______________________________________________________________________________________
MAX7033 Evaluation Kit
Figure 4. MAX7033 EV Kit PC Board 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.
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Printed USA
is a registered trademark of Maxim Integrated Products, Inc.
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