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| 型号： | ADUM3201WARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | ISOLATOR DGTL 1MBPS 2CH 8SOIC |
| 标准包装： | 98 |
| 系列： | iCoupler® |
| 输入 - 1 侧/2 侧： | 1/1 |
| 通道数： | 2 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 电压 - 隔离： | 2500Vrms |
| 数据速率： | 1Mbps |
| 传输延迟： | 150ns |
| 输出类型： | 逻辑 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
ADuM3200/ADuM3201
POWER CONSUMPTION
The supply current at a given channel of the ADuM3200 /
ADuM3201 isolator is a function of the supply voltage, the
channel’s data rate, and the channel’s output load.
For each input channel, the supply current is given by
Data Sheet
The values shown in Table 31 summarize the peak voltage for
50 years of service life for a bipolar ac operating condition, and
the maximum CSA/VDE approved working voltages. In many
cases, the approved working voltage is higher than the 50-year
service life voltage. Operation at these high working voltages
can lead to shortened insulation life.
I DDI = I DDI ( Q )
f ≤ 0.5 f r
The insulation lifetime of the ADuM3200 / ADuM3201 depends
I DDO = ( I DDO ( D ) + (0.5 × 10 ) × C L V DDO ) × (2 f ? f r ) + I DDO ( Q )
I DDI = I DDI ( D ) × (2 f ? f r ) + I DDI (Q) f > 0.5 f r
F or each output channel, the supply current is given by
I DDO = I DDO ( Q ) f ≤ 0.5 f r
?3
f > 0.5 f r
where:
I DDI (D) , I DDO (D) are the input and output dynamic supply currents
per channel (mA/Mbps).
C L is the output load capacitance (pF).
V DDO is the output supply voltage (V).
f is the input logic signal frequency (MHz, half of the input data
rate, NRZ signaling).
f r is the input stage refresh rate (Mbps).
I DDI (Q) , I DDO (Q) are the specified input and output quiescent
supply currents (mA).
To calculate the total I DD1 and I DD2 supply current, the supply
currents for each input and output channel corresponding to
I DD1 and I DD2 are calculated and totaled. Figure 6 provides per-
channel input supply currents as a function of data rate.
Figure 7 and Figure 8 provide per-channel output supply
currents as a function of data rate for an unloaded output
condition and for a 15 pF output condition, respectively.
Figure 9 through Figure 11 provide total I DD1 and I DD2
supply current as a function of data rate for ADuM3200
and ADuM3201 channel configurations.
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of
insulation degradation depends upon the characteristics of
the voltage waveform applied across the insulation. In addition
to the testing performed by the regulatory agencies, Analog
Devices carries out an extensive set of evaluations to determine
the lifetime of the insulation structure within the ADuM3200 /
ADuM3201 .
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage. Accel-
on the voltage waveform type imposed across the isolation
barrier. The i Coupler insulation structure degrades at different
rates depending on whether the waveform is bipolar ac, unipolar
ac, or dc. Figure 15, Figure 16, and Figure 17 illustrate these
different isolation voltage waveforms.
A bipolar ac voltage environment is the most stringent. The
goal of a 50-year operating lifetime under the ac bipolar
condition determines the Analog Devices recommended
maximum working voltage.
In the case of unipolar ac or dc voltage, the stress on the insu-
lation is significantly lower. This allows operation at higher
working voltages while still achieving a 50-year service life.
The working voltages listed in Table 31 can be applied while
maintaining the 50-year minimum lifetime, provided that
the voltage conforms to either the unipolar ac or dc voltage
cases. Any cross-insulation voltage waveform that does not
conform to Figure 16 or Figure 17 should be treated as a
bipolar ac waveform and its peak voltage should be limited
to the 50-year lifetime voltage value listed in Table 31.
Note that the voltage presented in Figure 16 is shown as sinusoi-
dal for illustration purposes only. It is meant to represent any
voltage waveform varying between 0 V and some limiting value.
The limiting value can be positive or negative, but the voltage
cannot cross 0 V.
RATED PEAK VOLTAGE
0V
Figure 15. Bipolar AC Waveform
RATED PEAK VOLTAGE
0V
Figure 16. Unipolar AC Waveform
RATED PEAK VOLTAGE
eration factors for several operating conditions are determined.
These factors allow calculation of the time to failure at the
actual working voltage.
Rev. C | Page 18 of 20
0V
Figure 17. DC Waveform
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| ADUM3201WCRZ | 功能描述:ISOLATOR DGTL 25MBPS 2CH 8SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:iCoupler® 产品培训模块:IsoLoop® Isolator 标准包装:50 系列:IsoLoop® 输入 - 1 侧/2 侧:5/0 通道数:5 电源电压:3 V ~ 5.5 V 电压 - 隔离:2500Vrms 数据速率:110Mbps 传输延迟:12ns 输出类型:CMOS 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 工作温度:-40°C ~ 85°C 其它名称:390-1053-5 |
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