i

Coupler® Isolated Interface

Development Environment

ezLINX™

Hardware User Guide

Rev. PrA | Page 10 of 15

Figure 10. ADuM3442, ADN4663, ADN4664 and ADuM5000 Isolated LVDS Implementation

POWER INPUT

An AC/DC desktop power supply is used to supply 7.5V input

to the barrel connector J1 on the ezLINX hardware. This supply

connects through a protection circuit as shown in Figure 11 to

the UNREG_IN node of the circuit.

Figure 11. Power Input

3.3V POWER SUPPLY

The ADP1864 Constant Frequency Current-Mode Step-Down

DC-to-DC Controller is used with an external P-Channel

Mosfet to generate the regulated 3.3V Power Supply for the

ez

LINX hardware. The circuit implementation of the 3.3V

power supply is shown in Figure 12.