MAXM22511 [MAXIM]
MAXM22510/MAXM22511 Evaluation Kit;
| 型号： | MAXM22511 |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | MAXM22510/MAXM22511 Evaluation Kit |
| 文件： | 总7页 (文件大小：484K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
Startup Procedure
General Description
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation.
The MAXM22510/MAXM22511 evaluation kit (EV kit) is a
fully assembled and tested PCB that demonstrates the
functionality of the MAXM22510/MAXM22511 isolated
RS-485/RS-422 transceiver module. The EV kit operates
from a single 3.3V supply.
1) Set the DC power supply to 3.3V and connect the
DC power supply between the EV kits V
GNDA connectors.
and
DDA
2) Ensure that all jumpers are in their default positions
(see Table 1).
Features
● Operates From a Single 3.3V Supply
3) Turn on the power supply.
4) Set the signal/function generator to output a 100kHz
0-to-3.3V square wave.
● Terminal Block Connectors for Easy RS-485/RS-422
Evaluation
NOTE: Set the signal/function generator to operate
with a high-impedance load. If needed, the R1 pad is
available to add a 50Ω impedance to ground.
5) Connect the signal/function generator to the TXD
test point.
● Up to 2500V
Isolation for 60s
RMS
● Fully Assembled and Tested
Quick Start
6) Using the oscilloscope, verify that the Y, Z, and RXD
outputs switch as the TXD signal toggles.
Required Equipment
● MAXM22510/MAXM22511 EV kit
● 3.3V, 300mA DC power supply
● Signal/function generator
● Oscilloscope
Ordering Information appears at end of data sheet.
319-100244; Rev 1; 1/19
Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
On-Board Resistor Configurations
Detailed Description of Hardware
To evaluate the MAXM22510/MAXM22511 at the end-
of-the-line in a RS-485/RS-422 bus, close J6 to connect
a 120Ω termination resistor (R3) between the A and B
RS-485 receiver inputs.
The EV kit is a fully assembled and tested circuit board
for evaluating the MAXM22510/MAXM22511 isolated
RS-485/RS-422 transceiver module (U1). The EV kit
is designed to evaluate the MAXM22510/MAXM22511
alone or in a standard RS-485 configuration.
Close J5 to connect a 120Ω termination resistor (R2)
between the Y and Z driver outputs.
Powering the Board
Pullup and pulldown resistors are generally used on the
receiver inputs to guarantee a known state in the event
that all nodes on the bus are in receive mode, or the
cable becomes disconnected. The exact value for these
resistors varies with the application. R7 and R9 pads are
provided for pullup and pulldown resistors on the Y and
Z lines. R10 and R12 pads provide for pullup and pull-
down resistors on the A and B lines, if needed. The use
of any of these resistors is purely optional. Note that the
MAXM22510/MAXM22511 features true fail-safe receiver
inputs, which ensures that RXD is high when the receiver
inputs are shorted, open, or connected to an idle bus.
The MAXM22510/MAXM22511 operates from a single
supply. Connect an external 3.3V supply to the V
test
DDA
point (TP6). Connect the ground terminal of the supply to
the GNDA test point (TP7). The integrated DC/DC in the
MAXM22510/MAXM22511 generates the isolated power
for the B-side/isolated side of the board.
Evaluating the Isolated RS-485 Interface
Driver and Receiver Enable Selection
The EV kit features two jumpers (J2 and J4) to enable/
disable the driver and receiver outputs.
To enable the driver outputs (Y and Z), set the J4 jumper
to 1-2 (‘H’). Set J4 to 2-3 to disable the Y and Z outputs.
RS-485 Interface Protection
The MAXM22510/MAXM22511 RS-485 interface pins (Y,
Z, A and B) feature internal ESD protection up to ±35kV
ESD (HBM), ±18kV ESD (Air gap), ±8kV ESD (Contact).
SM712 TVS diodes have been added to the I/O lines for
added protection up to ±30kV ESD (Air) and ±30kV ESD
(Contact). The SMT712 is also rated for protection against
EFT up to 40A (5/50ns).
To enable the receiver on the MAXM22510/MAXM22511,
set the J2 jumper to 2-3 (‘L’). Set J2 to 1-2 to disable the
receiver.
Enabling/Disabling Shutdown Mode
In shutdown mode, the internal DC/DC is disabled and no
power is generated on the isolated side of the board. The
J3 jumper is available to enable/disable shutdown mode
for the MAXM22510/MAXM22511. Set the J3 jumper to
2-3 for normal operation. Set J3 to 1-2 to enter shutdown
mode.
Optimized EMI Layout
The MAXM22510/MAXM22511 EV kit has been designed
for easy evaluation and is not optimized for EMI
performance/evaluation. See the Design Resources tab
on the MAXM22510/MAXM22511 web page for more
information about best design practices for optimum EMI
performance.
The SBA output is high impedance during shutdown and
is not pulled high. The R6 pad on the board is available to
add a pull-up resistor to SBA if SBA must be high when
the MAXM22510/MAXM22511 is in shutdown mode.
Loopback Configuration
The MAXM22510/MAXM22511 features one drive chan-
nel and one receive channel. Driver outputs are Y and Z
and receiver inputs are A and B. To configure the device
for loopback testing, close J7 and J8 to connect B to Z
and A to Y, respectively.
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
Table 1. Jumper Table (J2–J8)
JUMPER
SHUNT POSITION
DESCRIPTION
1-2
2-3*
RE is high. The RS-485 receiver is disabled.
J2
RE is low. The RS-485 receiver is enabled.
1-2
SD is high. The MAXM22510/MAXM22511 is in shutdown mode.
SD is low. The MAXM22510/MAXM22511 is not in shutdown mode.
DE is high. The RS-485 driver outputs are enabled.
J3
J4
J5
2-3*
1-2*
2-3
DE is low. The RS-485 driver outputs are disabled.
Open
Closed*
Y and Z are not connected through the on-board 120Ω termination resistor.
Y and Z are connected through the on-board 120Ω termination resistor.
Open
A and B are not connected through the on-board 120Ω termination resistor.
J6
J7
Closed*
Open*
Closed
Open*
Closed
A and B are connected through the on-board 120Ω termination resistor.
B is not connected to Z.
B is connected to Z.
A is not connected to Y.
J8
A is connected to Y.
*Default position.
Ordering Information
PART
MAXM22510EVKIT#
MAXM22511EVKIT#
TYPE
EV Kit
EV Kit
#Denotes RoHS compliant.
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
MAXM22510/MAXM22511 EV Kit Bill of Materials
ITEM REF_DES
DNI/DNP QTY MFG PART #
MANUFACTURER
VALUE
DESCRIPTION
CAPACITOR; SMT (CASE_C); ALUMINUM-ELECTROLYTIC; 47UF; 10V; TOL=20%;
MODEL=HA SERIES; TG=-40 DEGC to +105 DEGC; TC=
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; 3PINS; -
65 DEGC TO +125 DEGC
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 2PINS
CONNECTOR; FEMALE; THROUGH HOLE; GREEN TERMINAL BLOCK; STRAIGHT;
1
C7
-
1
EEE-HA1A470WR
PANASONIC
47UF
2
3
J2-J4
J5-J8
-
-
3
4
PCC03SAAN
PEC02SAAN
SULLINS
SULLINS
PCC03SAAN
PEC02SAAN
4
J9
-
1
1935200 PHOENIX CONTACT
1935200 6PINS
CONNECTOR; END LAUNCH JACK RECEPTACLE; BOARDMOUNT; STRAIGHT
THROUGH; 2PINS;
5
6
J10, J11
R2, R3
-
-
2
2
142-0701-851
CRCW0603120RJN
JOHNSON COMPONENTS
VISHAY DALE
142-0701-851
120 RESISTOR; 0603; 120 OHM; 5%; 200PPM; 0.10W; THICK FILM
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.445IN; BOARD HOLE=0.063IN;
5014 YELLOW; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.445IN; BOARD HOLE=0.063IN;
5011 BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH;
TEST POINT; PIN DIA=0.125IN; TOTAL LENGTH=0.445IN; BOARD HOLE=0.063IN;
RED; PHOSPHOR BRONZE WIRE SIL;
7
8
9
TP1, TP2, TP3, TP13-TP16
TP4, TP7, TP8, TP10, TP11
TP6, TP9, TP12
-
-
-
-
7
5
3
1
5014 N/A
5011 N/A
5010 KEYSTONE
N/A
MAXM22510GLH+ OR
MAXM22511GLH+
IC; TXRXMOD; 2.5KVRMS COMPLETE ISOLATED RS-485/RS-422 MODULE
TRANSCEIVER + POWER; LGA44
10 U1
MAXM22510GLH+ OR MAXM22511GLH+
MAXIM
IC; PROT; ASYMMETRICAL TVS DIODE FOR EXTENDED COMMON-MODE RS-485;
SOT23-3
PCB:MAXM22510/MAXM22511
11 U2, U3
12 PCB
-
-
2
1
SM712.TCT
SEMTECH
MAXIM
SM712.TCT
PCB
MAXM22510/MAXM22511
GRM188R71E105KA12;CGA3E1X7R1E105K;TM
K107B7105KA;06033C105KAT2A;GCM188R71E
105KA64
MURATA;TDK;TAIYO YUDEN;AVX;MURATA 1UF
CAPACITOR; SMT (0603); CERAMIC CHIP; 1UF; 25V; TOL=10%; TG=-55 DEGC TO
+125 DEGC; TC=X7R
13 C1, C4, C6
DNP
0
CAPACITOR; SMT (0603); CERAMIC CHIP; 0.1UF; 25V; TOL=10%; MODEL=C SERIES;
TG=-55 DEGC TO +125 DEGC; TC=X7R
CAP; SMT (2220); 3300PF; 10%; 250V; X7R; CERAMIC CHIP
CAP; SMT (2211); 1000PF; 10%; 250V; X7R; CERAMIC CHIP
CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 8PINS; -65 DEGC
TO +125 DEGC
14 C2, C3, C5
15 C10
16 C11
DNP
DNP
DNP
0
0
0
C1608X7R1E104K080AA
VJ2220Y332KXUSTX1
GA352QR7GF102KW01
TDK
0.1UF
3300PF
1000PF
VISHAY VITRAMON
MURATA
17 J1
18 R1, R5
19 R4
20 R6
21 R7, R9, R10, R12
DNP
DNP
DNP
DNP
DNP
0
0
0
0
0
PBC08SAAN
CRCW060349R9FK
CRCW12100000Z0
CRCW060310K0FK;ERJ-3EKF1002
CRCW06031K00FK;ERJ-3EKF1001
SULLINS ELECTRONICS CORP.
VISHAY DALE
VISHAY DALE
VISHAY DALE;PANASONIC
VISHAY DALE;PANASONIC
PBC08SAAN
49.9 RESISTOR; 0603; 49.9 OHM; 1%; 100PPM; 0.10W; THICK FILM
0 RESISTOR; 1210; 0 OHM; 0%; JUMPER; 0.5W; THICK FILM
RESISTOR; 0603; 10K; 1%; 100PPM; 0.10W; THICK FILM
RESISTOR; 0603; 1K; 1%; 100PPM; 0.10W; THICK FILM
10K
1K
TOTAL
32
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
MAXM22510/MAXM22511 EV Kit Schematic
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2
ꢗ
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5
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5
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
MAXM22510/MAXM22511 EV Kit PCB Layout Diagrams
MAXM22510/MAXM22511 EV Kit—Top Silkscreen
MAXM22510/MAXM22511 EV Kit—Top
MAXM22510/MAXM22511 EV Kit—Bottom
MAXM22510/MAXM22511 EV Kit—Bottom Silkscreen
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Evaluates: MAXM22510/MAXM22511
MAXM22510/MAXM22511
Evaluation Kit
Revision History
REVISION REVISION
PAGES
CHANGED
DESCRIPTION
NUMBER
DATE
0
8/18
Initial release
—
Update the Title on all pages to add MAXM22510 and to all sections where MAXM22511
is also mentioned; updated Table 1, the Bill of Materials, Schematic, PCB Layout, and
added MAXM22510EVKIT# to the Ordering Information table
1
1/19
1–7
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.
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 specifications without notice at any time.
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Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2019 Maxim Integrated Products, Inc.
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