
Data Sheet
300
250
200
180
160
ADuM5230
200
150
BEST-CASE PROCESS VARIATION
140
120
100
80
100
50
WORST-CASE PROCESS VARIATION
60
40
BEST-CASE PROCESS VARIATION
20
WORST-CASE PROCESS VARIATION
0
0
–40
–20
0
20
40
60
80
100
0
250
500
750
1000
1250
1500
1750
2000
ADuM5230
TEMPERATURE (°C)
Figure 22. Transient Immunity (Linear Transients) vs. Temperature
The sinusoidal component (at a given frequency) is given by
V CM, sinusoidal = V 0 sin(2π ft )
where:
V 0 is the magnitude of the sinusoidal.
f is the frequency of the sinusoidal.
The transient magnitude of the sinusoidal component is given by
dV CM / dt = 2π f V 0
The ability of the ADuM5230 to operate correctly in the pres-
ence of sinusoidal transients is characterized by the data in
Figure 23 and Figure 24. The data is based on design simulation
and is the maximum sinusoidal transient magnitude (2πf V 0 )
that the ADuM5230 can tolerate without an operational error.
Values for immunity against sinusoidal transients are not
included in Table 1 because measurements to obtain such values
have not been possible.
200
FREQUENCY (MHz)
Figure 24. Transient Immunity (Sinusoidal Transients),
100°C Ambient Temperature
TYPICAL APPLICATION USAGE
The ADuM5230 is intended for driving low gate capacitance
transistors (200 pF typically). Most high voltage applications
involve larger transistors than this. To accommodate these
applications, users can implement a buffer configuration with
the ADuM5230, as shown in Figure 25. In many cases, the
buffer configuration is the least expensive option and provides
the greatest amount of design flexibility. The precise buffer/high
voltage transistor combination can be selected to fit the needs of
the application.
+HV
V DD1 V ISO
V ADJ V OA
V IA GND ISO
R UPPER
FLOATING V DDB
R LOWER
180
160
GND 1
V IB
V DDB
V OB
GND B
140
–HV
120
100
80
60
40
20
0
B EST-CASE PROCESS VARIATION
WORST-CASE PROCESS VARIATION
Figure 25. Application Circuit
0
250
500
750
1000
1250
1500
1750
2000
FREQUENCY (MHz)
Figure 23. Transient Immunity (Sinusoidal Transients),
27°C Ambient Temperature
Rev. B | Page 13 of 16