Evaluates: MAX14933, MAX14937 MAX14933/MAX14937 Evaluation Kit General Description Features The MAX14933/MAX14937 evaluation kit (EV kit) is a fully Ease of Use Easy Powering Through Micro-USB or Test Points assembled and tested circuit board that demonstrates the SMA Connectors to Connect to External Equipment functionality of the MAX14933/MAX14937 2-channel digi- tal isolators in a 16-pin, wide-body SOIC surface-mount Guaranteed 5kV Isolation RMS package. The EV kit features two independent isolated Fully Assembled and Tested. power supplies independently adjustable to +5V. Ordering Information appears at end of data sheet. 19-7644 Rev 0 5/15Evaluates: MAX14933, MAX14937 MAX14933/MAX14937 Evaluation Kit The devices level-shift the data and control signals, Quick Start transmitting them across the isolation barrier. Each Required Equipment supply can be set independently and be present over the MAX14933/MAX14937 EV kit entire specified range of the device, regardless of the level or presence of the other supply. Two 5V DC power supplies or USB cables with a micro-B connector The devices can be used to transmit signals on isolated 2 Signal/function generator I C serial buses. Connect signals as shown in Table 1 to 2 Oscilloscope evaluate isolated I C operation. A simplified schematic showing the connections for evalu - Procedure 2 ating the devices in an isolated I C interface is attached to The EV kit is fully assembled and tested. Follow the steps this data sheet. The devices level-shift the data and clock below to verify board operation: signals, transmitting them across the isolation barrier. 1) Connect the DC power supplies between the EV kits Jumpers VDDA/VDDB and GNDA/GNDB test points. 2) Turn on the DC power supply and set it to 5V, then Two jumpers (POWA/POWB) are provided to switch enable the power-supply output. between powering the EV kit using micro-USB supplies or Note: It is also possible to power the EV kit with jumpers. When the jumpers are connected, the EV kit is standard USB ports. To do so, connect the micro- powered from the micro-USB ports. In this case, no external B end of the USB cables into PA/PB on the board. supply should be connected to VDDA/VDDB. Connect the A-end of the USB cable into the USB Pullups ports. All inputs and outputs are pulled up to the corresponding 3) Connect any signal to the SMA connectors or test V with a 4.7K resistor. The user has the option of adding a points and observe the isolated signal on the other DD side using an oscilloscope. resistor or capacitor to ground, or a series resistor depending on their particular needs. Detailed Description of Hardware (or Software) The MAX14933/MAX14937 EV kit is a fully assembled ISOLATION and tested circuit board for evaluating the MAX14933/ BARRIER MAX14937 2-channel digital isolators in a 16-pin, wide- MAX14933/ 5V 3.3V body SOIC package. The EV kit is powered from two +5V MAX14937 2 I CSLAVE supplies, as described below. 2 I CMASTER VDDA VCC VDDB External Power Supply TPA1 TPB1 SDA I/OA1 I/OB1 SDA Power on the EV kit is derived from two +5V sources. TPA2 TPB2 SCLK I/OA1 I/OB2 SCLK Connect external supplies to the +5V and GNDA test GNDA GNDB GND GNDB GND GNDA points, or connect a micro-B USB cable to the on-board PA/PB connectors to provide the 5V supply. Both options have a reverse-current protection diode. Figure 1. Simplified Schematic 2 Table 1. MAX14933/MAX14937 Connections for Isolated I C Evaluation MAX14933/MAX14937 PIN TEST POINT CONNECTION DESCRIPTION I/OA1 TPA1 SDA I/OA2 TPA2 SCLK Maxim Integrated 2 www.maximintegrated.com