MAX14838EVKIT# Analog Devices

Evaluates: MAX14838/MAX14839 MAX14838 Evalution Kit General Description Detailed Description of Hardware The MAX14838 evaluation kit (EV kit) is a fully assembled The MAX14838 EV kit is a fully tested circuit board and tested circuit board that evaluates the MAX14838 pin- demonstrating the capabilities of the MAX14838 industrial configurable industrial sensor output driver. binary sensor driver. The EV kit is designed to demonstrate all of the major features of the device. The MAX14838 EV kit may also be used to evaluate the MAX14839. Configuring the DO Output The MAX14838 is a pin-configurable binary sensor driver that Features can be configured for NPN, PNP, or push-pull operation in a Operates from a Wide 4.75V to 34V Supply normally-open or normally-closed configuration. Set the NO Standalone Operation (J2), PP (J3), and NPN (J5) jumpers high or low to configure the DO output. Table 2 shows the DO configuration settings. Proven PCB Layout LDO Linear Regulator Fully Assembled and Tested The MAX14838 features and intergrated 5V low-dropout Ordering Information appears at end of data sheet. linear regulator (VLDO) to power external loads up to 30mA. Quick Start LED Output Drivers (LEDS, LED2) The MAX14838 EV kit includes two on-board LEDs for Recommended Equipment visual feedback. MAX14838 EV kit The LEDS output (LED1) indicates the state of the DO 24V, 1A Power Supply driver. See Table 2. Mulimeter or voltmeter The LED connected to the LED2 output (LED2) is a Function/signal generator general-pupose LED and can be turned on or off with the Oscilloscope LED2IN input. Connect the J4 jumper high (1-2) to turn the LED2 output off. Connect the J4 jumper low (1-4) to Procedure turn the LED2 output on. The EV kit is fully assembled and tested. Follow the steps The default connection for the J4 jumper (1-3) connects below to verify board operation before exercising the full the LED2IN input to the FAULT output. In this configuration, features of the device: the LED2 output turns on when FAULT goes low due to an 1) Verify that all jumpers are in their default positions, as overcurrent or thermal shutdown condition on DO. shown in Table 1. 2) Connect the 24V DC power supply to VCC and GND test points on the EV kit board. 3) Connect the multimeter to the VLDO and GND test points on the EV kit board. 4) Turn on the power supply. 5) Verify that the mulitmeter reads 5V on the VLDO pin. 5) Set the function/signal generator to generate a 0-3V 1kHz signal. 5) Remove the J1 jumper. 6) Connect the function/signal generator to the DIN test point. Connect the oscilloscope to the DO test point. 6) Verify that DO switches as expected. 19-8619 Rev 0 8/16Evaluates: MAX14838/MAX14839 MAX14838 Evalution Kit Table 1. Jumper Descriptions JUMPER SHUNT POSITON DESCRIPTION 1-2 DIN is high. J1 2-3* DIN is low. 1-2 NO is high. J2 2-3* NO is low. 1-2 PP is high. J3 2-3* PP is low. 1-2 LED2IN is high. The LED2 LED is off. LED2IN is connected to FAULT. In this configuration, the LED2 LED is used a fault J4 1-3* indicator. LED2 turns on when an overcurrent or thermal shutdown fault occurs on DO. 1-4 LED2IN is high is low. The LED2 LED is turned on. 1-2 NPN is high. J5 2-3* NPN Is low. *Default position. Table 2. DO Configuration Settings INPUTS OPERATION NO PP NPN DIN MODE DO STATUS LEDS L L L L PNP NC ON (High) ON L L L H PNP NC OFF (High Impedance) OFF L L H L NPN NC ON (Low) ON L L H H NPN NC OFF (High Impedance) OFF L H L L Push-Pull NH HIGH ON L H L H Push-Pull NH LOW OFF L H H L Push-Pull NL LOW ON L H H H Push-Pull NL HIGH OFF H L L L PNP NO OFF (High Impedance) OFF H L L H PNP NO ON (High) ON H L H L NPN NO OFF (High Impedance) OFF H L H H NPN NO ON (Low) ON H H L L Push-Pull NL LOW OFF H H L H Push-Pull NL HIGH ON H H H L Push-Pull NH HIGH OFF H H H H Push-Pull NH LOW ON Maxim Integrated 2 www.maximintegrated.com