MAX12934/MAX12935 Evaluation Kits General Description The MAX12934/MAX12935 evaluation kit (EV kit) provides a proven design to evaluate the MAX12934 or MAX12935 two channel, wide-body digital isolators. The EV kit should be powered from two independent isolated power supplies with nominal output voltage in range from 1.71V to 5.5V. For evaluating the electrical parameters of the device without any isolation between the two sides, a single power supply can also be used. The MAX1293XWEVKIT# comes with U1 populated and supports the following digital isolators: MAX12934BAWE+, MAX12934CAWE+, MAX12934EAWE+, MAX12934FAWE+, MAX12935BAWE+, MAX12935CAWE+, MAX12935EAWE+, MAX12935FAWE+ Evaluates: MAX12934, MAX12935 Features ●● Broad Range of Data Transfer Rates (from DC to 200Mbps) ●● Two Unidirectional Channels in the Same Direction (MAX12934) or Two Unidirectional Channels in the Opposite Direction (MAX12935) ●● SMA Connectors for Easy Connection to External Equipment ●● Wide Power Supply Voltage Range from 1.71V to 5.5V ●● Guaranteed Up to 5kVRMS Isolation (for the WideBody SOIC Package) for 60s Ordering Information appears at end of data sheet. Table 1. EV Kit Options EVKIT PART # TARGET DEVICE PACKAGE TYPE COMMENT MAX12934BWEVKIT# MAX12934BAWE+ 16 SOIC Wide-Body 2 channel, 2/0, 25Mbps IC MAX12934FWEVKIT# MAX12934FAWE+ 16 SOIC Wide-Body 2 channel, 2/0, 200Mbps IC MAX12935BWEVKIT# MAX12935BAWE+ 16 SOIC Wide-Body 2 channel, 1/1, 25Mbps IC MAX12935FWEVKIT# MAX12935FAWE+ 16 SOIC Wide-Body 2 channel, 1/1, 200Mbps IC 319-100101A; Rev 0; 11/17 MAX12934/MAX12935 Evaluation Kits Evaluates: MAX12934, MAX12935 Figure 1. Wide-Body MAX12934XW/MAX12935XW EV Kit www.maximintegrated.com Maxim Integrated │ 2 Evaluates: MAX12934, MAX12935 MAX12934/MAX12935 Evaluation Kits Quick Start 1) Connect the DC power supplies between the MAX1293x EV kit’s VDDA/VDDB and GNDA/GNDB test points. 2) Turn on the DC power supplies and set them between 1.71V and 5.5V, then enable the power supply output. Note: It is also possible to power the MAX1293X EV kit from a single power supply to test electrical parameters but this invalidates the digital isolation of the IC. Connect the signal/function generator to the SMA connectors or test points of side A and observe the isolated signal on the other side, side B, using an oscilloscope. Required Equipment ●● MAX12934XW or MAX12935XW EV kit ●● Two adjustable +5V DC power supplies ●● Signal/function generator ●● Oscilloscope 3) Procedure The MAX12934XW and MAX12935XW EV kits are fully assembled and ready for evaluation. Follow the steps below to verify board functionality: Table 2. MAX12934xS, MAX12935xS, and MAX12935BW Board Connectors and Shunt Positions CONNECTOR SHUNT POSITION 1 2 3 4 n/a n/a Open 1-2* Open 1-2* n/a n/a 1 2 3 4 J1 J2 (SMA) J3 (SMA) J4 J5 J6 (SMA) J7 (SMA) J8 DESCIPTION Test point or input header for VDDA Test point or input header for I/O; same as J2 SMA Test point or input header for I/O; same as J3 SMA Test point or input header for GNDA I/O on side A I/O on side A Use ampere meter to measure current of side A Connect power supply to VDDA Use ampere meter to measure current of side B Connect power supply to VDDB I/O on side B I/O on side B Test point or input header for VDDB Test point or input header for I/O; same as J6 SMA Test point or input header for I/O; same as J7 SMA Test point or input header for GNDB *Default configuration Table 3. MAX12934xS, MAX12935xS, and MAX12935BW Test Points TEST POINT TP1 DESCIPTION Test point for VDDA TP1A Test point for SMA connector J2 TP1B Test point for SMA connector J6 TP2, TP3 Test point for GNDA TP2A Test point for SMA connector J3 TP2B Test point for SMA connector J7 TP4, TP5 Test point for GNDB TP6 Test point for VDDB www.maximintegrated.com Maxim Integrated │ 3 MAX12934/MAX12935 Evaluation Kits Detailed Description of Hardware The MAX12934XW and MAX12935XW EV kits are powered from two external adjustable power supplies as described below. External Power Supplies Power to the MAX12934XW and MAX12935XW EV kits are derived from two external sources which can both be between +1.71V and +5.5V. Connect one source between the VDDA and GNDA test points, and another source between the VDDB and GNDB test points. Each supply can be set independently and can be present over the entire range from 1.71V to 5.5V, regardless of the level or presence of the other supply. The MAX12934/MAX12935 level-shifts the data, transmitting them across the isolation barrier. Evaluates: MAX12934, MAX12935 Two SMA connectors on each side of the board allow easy connections to signal generator(s) and oscilloscope. A typical application diagram is shown in Figure 2. Decoupling Capacitors Each power supply is decoupled with a 10µF ceramic capacitor placed close to the power supply test point, and a 0.1µF ceramic capacitor placed close to U1. Termination Each input and output has an unpopulated 0805 SMT resistor (R1–R4) and a 0805 SMT capacitor (C1, C2, C6, C7) to GND_ to allow termination based on customer requirements. 3.3V 2.5V 0.1µF 0.1µF VDD VDDA RX OUT1 MAX12935 VDDB VDD IN1 RXD TRANSCEIVER A B MICRO CONTROLLER Y TX GND IN2 OUT2 TXD GNDA GNDB GND Z Figure 2. Typical Application Diagram Ordering Information PART TYPE MAX12934BWEVKIT#* EV Kit with installed MAX12934BAWE+ MAX12934FWEVKIT#* EV Kit with installed MAX12934FAWE+ MAX12935BWEVKIT# EV Kit with installed MAX12935BAWE+ MAX12935FWEVKIT#* EV Kit with installed MAX12935FAWE+ #Denotes RoHS compliant. *Future product—contact factory for availability. www.maximintegrated.com Maxim Integrated │ 4 MAX12934/MAX12935 Evaluation Kits Evaluates: MAX12934, MAX12935 MAX1293XW EV Kit Bill of Materials www.maximintegrated.com Maxim Integrated │ 5 Evaluates: MAX12934, MAX12935 MAX12934/MAX12935 Evaluation Kits MAX1293XW EV Kit Schematic VDDA TP1 VDDB C3 10UF VDDA VDDB TP6 C8 10UF GNDA GNDB 1 1 J5 J4 2 TP1A 2 TP1B U1 J2 142-0701-851 1 J1 GNDA C1 0.01UF DNI 5 3 4 2 VDDA MAX12934/ MAX12935 R1 4.7K DNI C4 0.1UF GNDA 1 2 3 4 GNDA TP2A 1 16 2 15 3 14 4 13 5 12 6 11 7 10 8 9 J6 142-0701-851 GNDB C5 0.1UF C6 0.01UF DNI 1 R3 4.7K DNI VDDB 2 4 3 5 J8 1 2 3 4 GNDB GNDB TP2B GNDA GNDB J7 142-0701-851 J3 142-0701-851 C2 0.01UF DNI 1 5 3 4 2 GNDA www.maximintegrated.com R2 TP2 TP3 TP4 TP5 4.7K DNI GNDA GNDB C7 0.01UF DNI 1 R4 4.7K DNI 2 4 3 5 GNDB Maxim Integrated │ 6 MAX12934/MAX12935 Evaluation Kits Evaluates: MAX12934, MAX12935 MAX1293XW EV Kit PCB Layout MAX1293XW EV Kit―Top Silkscreen MAX1293XW EV Kit―Top MAX1293XW EV Kit―Level 2 GND MAX1293XW EV Kit―Level 3 Power www.maximintegrated.com Maxim Integrated │ 7 MAX12934/MAX12935 Evaluation Kits Evaluates: MAX12934, MAX12935 MAX1293XW EV Kit PCB Layout (continued) MAX1293XW EV Kit―Bottom www.maximintegrated.com Maxim Integrated │ 8 MAX12934/MAX12935 Evaluation Kits Evaluates: MAX12934, MAX12935 Revision History REVISION NUMBER REVISION DATE 0 11/17 DESCRIPTION Initial release PAGES CHANGED — 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. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2017 Maxim Integrated Products, Inc. │ 9