Si87xx-EVB

4

Rev. 0.3

3. Hardware Overview and Demo

Figure 5 illustrates the connection diagram to demonstrate the Si87xx-DIP8 EVB. The other footprint boards

demonstrate in a similar fashion. This demo transmits a 500 kHz (5 V peak, 50 percent duty cycle) square wave

through the isolator to its output (Vo). In this example, VDD is powered by a 5 V supply. Figure 6 shows a scope

shot of CH1 (input) and CH2 (output). Note that if a user wants to evaluate an LED Emulator Input isolator other

than the ones pre-populated, this can be accomplished by removing the installed device and replacing it with the

desired footprint-compatible isolator device.

Figure 5. Summary Diagram and Test Setup

Figure 6. Oscilloscope Display of Input and Output

Output

to Scope

CH2

Signal Input

(500 kHz, 5 Vpk)

Square Wave

Power Supply

(5 V)

Input

to Scope

CH1

+

-

+

_

+

_