ADUM1230BRWZ中文资料(8)

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ADuM1230

The transient magnitude of the sinusoidal component is given by

dVCM/dt = 2πf V0

The ADuM1230’s ability to operate correctly in the presence of sinusoidal transients is characterized by the data in Figure 9 and Figure 10. The data is based on design simulation and is the maximum sinusoidal transient magnitude (2πf V0) that the ADuM1230 can tolerate without an operational error. Values for immunity against sinusoidal transients are not included in Table 5 because measurements to obtain such values have not been possible.

200180160

TRANSIENT IMMUNITY (kV/µs)

140120100

806040200

250

500

75010001250FREQUENCY (MHz)

1500

1750

2000

05460-01205460-013

APPLICATION NOTES

COMMON-MODE TRANSIENT IMMUNITY

In general, common-mode transients consist of linear and sinusoidal components. The linear component of a common-mode transient is given by

VCM, linear = (ΔV/Δt) t

where ΔV/Δt is the slope of the transient shown in Figure 11 and Figure 12.

The transient of the linear component is given by

dVCM/dt = ΔV/Δt

The ADuM1230’s ability to operate correctly in the presence of linear transients is characterized by the data in Figure 8. The data is based on design simulation and is the maximum linear transient magnitude that the ADuM1230 can tolerate without an operational error. This data shows a higher level of robustness than what is shown in Table 5 because the transient immunity values obtained in Table 5 use measured data and apply allowances for measurement error and margin.

300

250TRANSIENT IMMUNITY (kV/µs)

200

150

200

100

TRANSIENT IMMUNITY (kV/µs)

50

180160140

12010080

Figure 9. Transient Immunity (Sinusoidal Transients),

27°C Ambient Temperature

–200

2040

TEMPERATURE (°C)

6080100

05460-011

0–40

Figure 8. Transient Immunity (Linear Transients) vs. Temperature

604020

00

250

500

75010001250FREQUENCY (MHz)

1500

1750

2000

The sinusoidal component (at a given frequency) is given by

VCM, sinusoidal = V0sin(2πft) where:

V0 is the magnitude of the sinusoidal. f is the frequency of the sinusoidal.

Figure 10. Transient Immunity (Sinusoidal Transients),

100°C Ambient Temperature

Rev. A | Page 8 of 12