2 isolated digital output circuits, 3 digital i/o windows driver and api, Preliminary – ADLINK MXC-2300 User Manual

Page 31: Isolated digital output circuits, Digital i/o windows driver and api, Figure 1-11, Figure 1-12, Isolated digital output sample application circuit

PRELIMINARY

Introduction

MXC-2300

1.6.2

Isolated Digital Output Circuits

Each isolation digital output channel adopts a MOSFET transistor,
capable of driving peak current up to 250mA (sustained current up
to 100 mA) with voltage ranges from 5V to 35V.

The VDD pin is connected in serial with a flywheel diode protecting
the driver during inductance loading, such as relay, motor, or sole-
noid, wherein the VDD must connect to external power to form a
flywheel current loop.

Figure 1-11: Isolated Digital Output Circuits

Figure 1-12: Isolated Digital Output Sample Application Circuit

1.6.3

Digital I/O Windows Driver and API

The MXC-2300 DI/O incorporates ADLINK’s PCMe-1432 Win-
dows driver, on the bundled driver CD or downloadable from
Adlink's MXC-2300 web support page (driver for MXC-2300 DI/O).

+VDD

DOn

EOGND

MOSFET

Flywheel

Diode

+V5DIO_ISO

Photocoupler

DO_BUF_n

GND