Si80xx-EVB
4
Rev. 0.1
3.1. DC Supply Configuration
To run the demo, follow the instructions below. Review Figure 2 and Figure 5 if necessary.
1. Turn OFF the dc power supply and ensure that the output voltage is set to its lowest output voltage.
2. Connect the banana ends of the black and red banana-to-clip terminated wires to the outputs of both dc
supplies.
3. For the input side of the Si80xx-EVB, connect the clip end of the red banana-to-clip terminated wire to
VDD1 and the clip end of the black wire to GND1.
4. Similarly, for the output side of the EVB, the red wire goes to VDD2 and the black wire goes to GND2.
5. Turn ON the dc power supply and adjust both dc power supplies to provide 5 V on their outputs.
6. Ensure that the current draw is less than 25 mA. If it is larger, this indicates that either the board or Si80xx
has been damaged or the supply is connected backwards.
3.2. Wave Form Generator
1. Turn ON the arbitrary waveform generator with the output disengaged.
2. Adjust its output to provide a 500 kHz, 0 to 5 V peak square wave (50 percent duty cycle) to its output.
3. Connect one end of the first coaxial cable to the output of the signal generator.
4. Connect the BNC splitter to the other end of the first coaxial cable.
5. From the BNC splitter, connect the second coaxial cable to CH1 of the scope. CH1 will display the input to
the EVB.
6. Connect the third coaxial cable to the BNC splitter, and connect a BNC-to-clip converter to the end of this
coaxial cable.
7. From here, connect the clip end of the BNC-to-clip converter to the Si80xx-EVB’s A1 (red wire here) and
GND1 (black wire here).
8. Connect one end of the fourth coaxial cable to a BNC-to-clip converter (note that a scope probe can be
used here instead).
9. From here, connect the clip end of the BNC-to-clip converter to the Si80xx-EVB’s B1 (red wire here) and
GND2 (black wire here).
10. Connect the other end of the fourth coaxial cable to CH2 of the oscilloscope. CH2 will display the output
of the EVB.
11. Engage the output of the waveform generator.
3.3. Oscilloscope Setup
1. Turn ON the oscilloscope.
2. Set the scope to Trigger on CH1 and adjust the trigger level to 1 V minimum.
3. Set CH1and CH2 to 2 V per division.
4. Adjust the seconds/division setting to 400 ns/division.
5. Adjust the level indicator for all channels to properly view each channel as shown in Figure 3.
A 500 kHz square wave should display on Channel 1 of the scope for the input and a 5 V delayed version of this
square wave should display the output on Channel 2, as shown in Figure 3. This concludes the basic demo.
