Evaluates: MAXM MAXM22511 Evaluation Kit. General Description. Features. Quick Start. Startup Procedure. Required Equipment

Transcription

1 Click here for production status of specific part numbers. MAXM Evaluation Kit Evaluates: MAXM General Description The MAXM evaluation kit (EV kit) is a fully assembled and tested PCB that demonstrates the functionality of the MAXM isolated RS-8/RS- transceiver module. The EV kit operates from a single.v supply. Features Operates From a Single.V Supply Terminal Block Connectors for Easy RS-8/RS- Evaluation Up to 00V RMS Isolation for 60s Fully Assembled and Tested Quick Start Required Equipment MAXM EV kit.v, 00mA DC power supply Signal/function generator Oscilloscope Startup Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation. ) Set the DC power supply to.v and connect the DC power supply between the EV kits V DDA and connectors. ) Ensure that all jumpers are in their default positions (see Table ). ) Turn on the power supply. ) Set the signal/function generator to output a 00kHz 0-to-.V square wave. NOTE: Set the signal/function generator to operate with a high-impedance load. If needed, the R pad is available to add a 0Ω impedance to ground. ) Connect the signal/function generator to the test point. 6) Using the oscilloscope, verify that the Y, Z, and outputs switch as the signal toggles. Ordering Information appears at end of data sheet. 9-00; Rev 0; 8/8

2 MAXM Evaluation Kit Evaluates: MAXM Detailed Description of Hardware The EV kit is a fully assembled and tested circuit board for evaluating the MAXM isolated RS-8/RS- transceiver module (U). The EV kit is designed to evaluate the MAXM alone or in a standard RS-8 configuration. Powering the Board The MAXM operates from a single supply. Connect an external.v supply to the test point (TP6). Connect the ground terminal of the supply to the test point (TP7). The integrated DC/DC in the MAXM generates the isolated power for the B-side/isolated side of the board. Evaluating the Isolated RS-8 Interface Driver and Receiver Enable Selection The EV kit features two jumpers (J and J) to enable/ disable the driver and receiver outputs. To enable the driver outputs (Y and Z), set the J jumper to - ( H ). Set J to - to disable the Y and Z outputs. To enable the receiver on the MAXM, set the J jumper to - ( L ). Set J to - 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 J jumper is available to enable/disable shutdown mode for the MAXM. Set the J jumper to - for normal operation. Set J to - to enter shutdown mode. 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 MAXM is in shutdown mode. Loopback Configuration The MAXM features one drive channel 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. On-Board Resistor Configurations To evaluate the MAXM at the end-of-the-line in a RS-8/RS- bus, close J6 to connect a 0Ω termination resistor (R) between the A and B RS-8 receiver inputs. Close J to connect a 0Ω termination resistor (R) between the Y and Z driver outputs. 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. R0 and R pads provide for pullup and pulldown resistors on the A and B lines, if needed. The use of any of these resistors is purely optional. Note that the MAXM features true fail-safe receiver inputs, which ensures that is high when the receiver inputs are shorted, open, or connected to an idle bus. RS-8 Interface Protection The MAXM RS-8 interface pins (Y, Z, A and B) feature internal ESD protection up to ±kv ESD (HBM), ±8kV ESD (Air gap), ±8kV ESD (Contact). SM7 TVS diodes have been added to the I/O lines for added protection up to ±0kV ESD (Air) and ±0kV ESD (Contact). The SMT7 is also rated for protection against EFT up to 0A (/0ns). Optimized EMI Layout The MAXM EV kit has been designed for easy evaluation and is not optimized for EMI performance/ evaluation. See the Design Resources tab on the MAXM web page for more information about best design practices for optimum EMI performance. Maxim Integrated

3 MAXM Evaluation Kit Evaluates: MAXM Table. Jumper Table (J J8) JUMPER SHUNT POSITION DESCRIPTION J - RE is high. The RS-8 receiver is disabled. -* RE is low. The RS-8 receiver is enabled. J - SD is high. The MAXM is in shutdown mode. -* SD is low. The MAXM is not in shutdown mode. J -* DE is high. The RS-8 driver outputs are enabled. - DE is low. The RS-8 driver outputs are disabled. J Open Y and Z are not connected through the on-board 0Ω termination resistor. Closed* Y and Z are connected through the on-board 0Ω termination resistor. J6 J7 J8 *Default position. Open A and B are not connected through the on-board 0Ω termination resistor. Closed* A and B are connected through the on-board 0Ω termination resistor. Open* B is not connected to Z. Closed B is connected to Z. Open* A is not connected to Y. Closed A is connected to Y. Ordering Information PART MAXMEVKIT# #Denotes RoHS compliant. TYPE EV Kit Maxim Integrated

4 MAXM Evaluation Kit Evaluates: MAXM MAXM EV Kit Bill of Materials ITEM REF_DES / DNP QTY MFG PART # MFG VALUE DESCRIPTION CAPACITOR; SMT (CASE_C); ALUMINUM- ELECTROLYTIC; 7UF; 0V; TOL=0%; MODEL=HA C7 - EEE-HAA70WR PANASONIC 7UF SERIES; TG=-0 DEGC to +0 DEGC; TC= J-J - PCC0SAAN SULLINS PCC0SAAN CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT THROUGH; PINS; -6 DEGC TO + DEGC J-J8 - PEC0SAAN SULLINS PEC0SAAN CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; PINS J9-900 PHOENIX CONTACT 900 CONNECTOR; FEMALE; THROUGH HOLE; GREEN TERMINAL BLOCK; STRAIGHT; 6PINS J0, J JOHNSON COMPONENTS R, R - CRCW0600RJN VISHAY DALE 0 CONNECTOR; END LAUH JACK RECEPTACLE; BOARDMOUNT; STRAIGHT THROUGH; PINS; RESISTOR; 060; 0 OHM; %; 00PPM; 0.0W; THICK FILM TP, TP, TP, TP- TP6-7 0 N/A 0 TP, TP7, TP8, TP0, TP - 0 N/A 0 TP6, TP9, TP - 00 KEYSTONE N/A TEST POINT; PIN DIA=0.IN; TOTAL LENGTH=0.IN; BOARD HOLE=0.06IN; YELLOW; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; TEST POINT; PIN DIA=0.IN; TOTAL LENGTH=0.IN; BOARD HOLE=0.06IN; BLACK; PHOSPHOR BRONZE WIRE SILVER PLATE FINISH; TESTPOINT WITH.80MM HOLE DIA, RED, MULTIPURPOSE; 0 U - MAXM MAXIM MAXM U, U - SM7.TCT SEMTECH SM7.TCT PCB - MAXM MAXIM PCB PCB:MAXM GRM88R7E0KAD; CGAEX7RE0K; MURATA; TMK07B70KA; TDK;TAIYO C, C, C6 DNP 0 060C0KATA YUDEN;AVX UF C, C, C DNP 0 C608X7RE0K080AA TDK 0.UF VISHAY C0 DNP 0 VJ0YKXUSTX VITRAMON 00PF 6 C DNP 0 GAQR7GF0KW0 MURATA 000PF SULLINS ELECTRONICS 7 J DNP 0 PBC08SAAN CORP. PBC08SAAN 8 R, R DNP 0 CRCW0609R9FK VISHAY DALE R DNP 0 CRCW00000Z0 VISHAY DALE 0 EVKIT PART-MODULE;.KVRMS ISOLATED; MBPS; FULL-DUPLEX; RS-8/RS- TRANSCEIVERS WITH +/-KV ESD PROTECTION; LGA; PACKAGE OUTLINE DRAWING: IC; PROT; ASYMMETRICAL TVS DIODE FOR EXTENDED COMMON-MODE RS-8; SOT- CAPACITOR; SMT (060); CERAMIC CHIP; UF; V; TOL=0%; TG=- DEGC TO + DEGC; TC=X7R CAPACITOR; SMT (060); CERAMIC CHIP; 0.UF; V; TOL=0%; MODEL=C SERIES; TG=- DEGC TO + DEGC; TC=X7R CAP; SMT (0); 00PF; 0%; 0V; X7R; CERAMIC CHIP CAP; SMT (); 000PF; 0%; 0V; X7R; CERAMIC CHIP CONNECTOR; MALE; THROUGH HOLE; BREAKAWAY; STRAIGHT; 8PINS; -6 DEGC TO + DEGC RESISTOR; 060; 9.9 OHM; %; 00PPM; 0.0W; THICK FILM RESISTOR; 0; 0 OHM; 0%; JUMPER; 0.W; THICK FILM 0 R6 DNP 0 CRCW0600K0FK;ERJ- EKF00 VISHAY DALE; PANASONIC 0K RESISTOR; 060; 0K; %; 00PPM; 0.0W; THICK FILM R7, R9, R0, R DNP 0 TOTAL CRCW060K00FK;ERJ- EKF00V VISHAY DALE; PANASONIC K RESISTOR; 060; K; %; 00PPM; 0.0W; THICK FILM NOTE: --> DO NOT INSTALL(PACKOUT) ; DNP--> DO NOT PROCURE Maxim Integrated

5 6 7 8 MAXM Evaluation Kit Evaluates: MAXM MAXM EV Kit Schematic J J J REB DE /SBA SD J J TP TP J TP R /SBA R REB SD DE R6 0K TP6 TP7 TP8 C C C7 7UF I.C. SBA RE SD DE U MAXM C0 R C TP9 TP0 TP VRECT VLDO TP VRECT C C TP VRECT C C6 U SM7.TCT R0 TP J6 TP 0 R R7 R TP J TP6 R 0 U R9 SM7.TCT PROJECT TITLE - MAXM_EVKIT_A DATE - 0/08 REVISION - A J7 J8 J9 B A Z Y B A Z Y 6 + Maxim Integrated

6 MAXM Evaluation Kit Evaluates: MAXM MAXM EV Kit PCB Layout Diagrams MAXM EV Kit Top Silkscreen MAXM EV Kit Top MAXM EV Kit Bottom MAXM EV Kit Bottom Silkscreen Maxim Integrated 6

7 MAXM Evaluation Kit Evaluates: MAXM Revision History REVISION NUMBER REVISION DATE DESCRIPTION PAGES CHANGED 0 8/8 Initial release For pricing, delivery, and ordering information, please contact Maxim Direct at , or visit Maxim Integrated s website at. 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. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. 08 Maxim Integrated Products, Inc. 7