SLLSEB6B – JULY 2012 – REVISED MAY 2013
PARAMETER MEASUREMENT INFORMATION
VCC1
-
+
-
+
VCC2
R1
SDA1
R1
R2
R2
SDA2
ISO1540/1
SCL1
C1
C1
C2
SCL2
C2
Figure 1. Test Diagram
VCC1
VCC1
GND1
VCC2
R1
R2
Isolation
+
SDA1 or
SCL1
Output
-
C1
C2
SDA1
SCL1 [ISO1540 Only]
t
LOOP 1
0.3VCC
1
0.4V
GND1
GND2
Figure 2. t
Loop1
Setup and Timing Diagram
VCCx
2 kW
Input
VCCy
2 kW
Isolation
+
Output
-
GNDx
GNDy
V
CMTI
Figure 3. Common-Mode Transient Immunity Test Circuit
6
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