SI823X Datasheet, PDF (9/52 Pages) Silicon Laboratories – 0.5 AND 4.0 AMP ISODRIVERS (2.5 AND 5 KVRMS)

2.1. Test Circuits
Figures 4 and 5 depict sink current and source current test circuits.
Si823x
INPUT
VDDI
(5 V)
VDD
IN_ _Si823x OUT_
VSS
VDDA = VDDB = 15 V
SCHOTTKY
1 µF
10
100 µF
5V
+
_
Measure
50 ns
VDDI
200 ns
GND
INPUT WAVEFORM
1 µF
CER
10 µF
EL
RSNS
0.1
Figure 4. Sink Current Test Circuit
INPUT
VDDI
(5 V)
VDD
IN_ _Si823x OUT_
VSS
VDDA = VDDB = 15 V
SCHOTTKY
1 µF
10
100 µF
5V
+
_
Measure
50 ns
VDDI
200 ns
GND
INPUT WAVEFORM
1 µF
CER
10 µF
EL
RSNS
0.1
Figure 5. Source Current Test Circuit
Rev. 0.3
9