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参数资料
| 型号： | ADUM3442CRWZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/24页 |
| 文件大小： | 0K |
| 描述： | IC DIGITAL ISOLATOR 4CHAN 16SOIC |
| 标准包装： | 1,000 |
| 系列： | iCoupler® |
| 输入 - 1 侧/2 侧： | 2/2 |
| 通道数： | 4 |
| 电源电压： | 3 V ~ 5.5 V |
| 电压 - 隔离： | 2500Vrms |
| 数据速率： | 150Mbps |
| 传输延迟： | 36ns |
| 输出类型： | 逻辑 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 105°C |
ADuM3440/ADuM3441/ADuM3442
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of
insulation degradation is dependent on 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 ADuM344x.
Analog Devices performs accelerated life testing using voltage levels
higher than the rated continuous working voltage. Acceleration
factors for several operating conditions are determined. These
factors allow calculation of the time to failure at the actual working
voltage. The values shown in Figure 20 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 in some cases.
The insulation lifetime of the ADuM344x depends 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 20, Figure 21, and Figure 22 illustrate these
different isolation voltage waveforms.
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the ac bipolar condition
determines the maximum working voltage recommended by
Data Sheet
In the case of unipolar ac or dc voltage, the stress on the insulation
is significantly lower, which allows operation at higher working
voltages while still achieving a 50-year service life. The working
voltages listed in Table 10 can be applied while maintaining the
50-year minimum lifetime provided the voltage conforms to
either the unipolar ac or dc voltage cases. Any cross insulation
voltage waveform that does not conform to Figure 21 or Figure 22
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 10.
Note that the voltage presented in Figure 21 is shown as sinusoidal
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 20. Bipolar AC Waveform
RATED PEAK VOLTAGE
0V
Figure 21. Unipolar AC Waveform
RATED PEAK VOLTAGE
Analog Devices.
0V
Figure 22. DC Waveform
Rev. D | Page 20 of 24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUM344X | 制造商:AD 制造商全称:Analog Devices 功能描述:Digital Isolator Product Selection and Resource Guide |
| ADUM3470 | 制造商:AD 制造商全称:Analog Devices 功能描述:PWM Controller and Transformer Driver with Quad-Channel Isolators |
| ADUM3470ARSZ | 功能描述:隔离器接口集成电路 4-Ch Isolators w/ Int Transformer Driver RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube |
| ADUM3470ARSZ-RL7 | 功能描述:隔离器接口集成电路 4-Ch Isolators w/ Int Transformer Driver RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube |
| ADUM3470CRSZ | 功能描述:ISOLAT DGTL 2.5KVRMS 4CH 20SSOP RoHS:是 类别:隔离器 >> 数字隔离器 系列:iCoupler® 标准包装:66 系列:iCoupler® 输入 - 1 侧/2 侧:2/2 通道数:4 电源电压:3.3V，5V 电压 - 隔离:2500Vrms 数据速率:25Mbps 传输延迟:60ns 输出类型:逻辑 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:管件 工作温度:-40°C ~ 105°C |
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