Datasheet ADUM7234 (Analog Devices) - 8

link to page 9 link to page 9 link to page 8 link to page 4 link to page 8 link to page 8 link to page 4
ADuM7234 Data Sheet APPLICATIONS INFORMATION COMMON-MODE TRANSIENT IMMUNITY
Figure 9 and Figure 10 characterize the ability of the In general, common-mode transients consist of linear and ADuM7234 to operate correctly in the presence of sinusoidal sinusoidal components. The linear component of a common- transients. The data is based on design simulation and is the mode transient is given by maximum sinusoidal transient magnitude (2πf V0) that the ADuM7234 can tolerate without an operational error. Values VCM, linear = (ΔV/Δt)t for immunity against sinusoidal transients are not included in where ΔV/Δt is the slope of the transient shown in Figure 11 Table 4 because measurements to obtain such values have not and Figure 12. been possible. The transient of the linear component is given by
250
dVCM/dt = ΔV/Δt
200
Figure 8 characterizes the ability of the ADuM7234 to operate
s) µ
correctly in the presence of linear transients. The data, based on
V/ (k
design simulation, is the maximum linear transient magnitude
Y T 150
that the ADuM7234 can tolerate without an operational error.
UNI BEST-CASE PROCESS VARIATION M WORST-CASE PROCESS VARIATION
This data shows a correlation with the data that is listed in
M I 100
Table 4, which is based on measured data.
NT IE 50 RANS T 50 45 40 s) 0 µ 0 250 500 750 1000 1250 1500 1750 2000
004
V/ 35 FREQUENCY (MHz) (k
07990-
Y T 30
Figure 9. Transient Immunity (Sinusoidal Transients),
UNI 25
27°C Ambient Temperature
M M I 20 250 NT IE BEST-CASE PROCESS VARIATION 15 WORST-CASE PROCESS VARIATION RANS 200 T 10 s) /µ 5 kV ( Y T 0 150 –40 –20 0 20 40 60 80 100
003
UNI BEST-CASE PROCESS VARIATION M TEMPERATURE (°C) WORST-CASE PROCESS VARIATION
07990-
M I
Figure 8. Transient Immunity (Linear Transients) vs. Temperature
NT 100 IE
The sinusoidal component (at a given frequency) is given by
RANS
V
T 50
CM, sinusoidal = V0sin(2πft) where: V
0
0 is the magnitude of the sinusoidal.
0 250 500 750 1000 1250 1500 1750 2000
005 f is the frequency of the sinusoidal.
FREQUENCY (MHz)
07990- Figure 10. Transient Immunity (Sinusoidal Transients), The transient magnitude of the sinusoidal component is given by 100°C Ambient Temperature dVCM/dt = 2πf V0 Rev. B | Page 8 of 12 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Electrical Characteristics Package Characteristics Insulation and Safety-Related Specifications Recommended Operating Conditions Regulatory Information Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Applications Information Common-Mode Transient Immunity Insulation Lifetime Outline Dimensions Ordering Guide