2.4Testing the EVM Setup
1)Turn on the dc power supply.
2)Verify that both the +5 V (current meter 1) and the ±5 V (current meter 2) currents are below 20 mA.
Caution:
Currents above 20 mA indicate a possible short or a wrong resistor value on the PCB. Do not proceed until this situation is corrected.
3)Turn on the function generator.
4)Verify the oscilloscope is showing two 1 MHz sine waves with amplitude of ±0.125 V. The dc offset of the signal must be below 50 mV.
Note: VOUT+ and VOUT± should be 180 degrees out of phase. The internal attenuation of the scope should be set to 6 dB for a gain of one. Otherwise,
the output will show a gain of
Use Figure 3 as a reference for the input and output signals.
Figure 2±3. Driver 1 Output Signal
THS4130
C1
C2
C3
Using the THS4130 EVM |
