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参数资料
| 型号： | ADUM1234BRWZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/12页 |
| 文件大小： | 0K |
| 描述： | IC ISOLATR DGTL 2CH 0.1A 16-SOIC |
| 标准包装： | 1,000 |
| 系列： | iCoupler® |
| 输入 - 1 侧/2 侧： | 2/0 |
| 通道数： | 2 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电压 - 隔离： | 2500Vrms |
| 数据速率： | 10Mbps |
| 传输延迟： | 124ns |
| 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 |
ADuM1234
Data Sheet
15V
V DD1
GND 1
V DDA AND V DDB
5V
15V
The insulation lifetime of the ADuM1234 depends on the voltage
waveform type imposed across the isolation barrier. The i Coupler
insulation structure degrades at different rates depending on
15V
? V
GND A AND GND B
whether the waveform is bipolar ac, unipolar ac, or dc. Figure 15,
V DDA AND V DDB
GND A AND GND B
V DD1
5V
? t
? V
? t
15V
Figure 16, and Figure 17 illustrate these different isolation voltage
waveforms.
GND 1
Figure 12. Common-Mode Transient Immunity Waveforms, Input to Output
Bipolar ac voltage is the most stringent environment. The goal
of a 50-year operating lifetime under the bipolar ac condition
determines the maximum working voltage recommended by
Analog Devices.
V DDA /V DDB
GND A /GND B
V DDB /V DDA
GND A /GND B
15V
15V
? V
? t
15V
V DDA /V DDB
GND A /GND B
V DDB /V DDA
GND B /GND A
15V
15V
? V
? t
15V
In the case of unipolar ac or dc voltage, the stress on the insulation
is significantly lower. This allows operation at higher working
voltages while still achieving a 50-year service life. The working
voltages listed in Table 8 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
Figure 13. Common-Mode Transient Immunity Waveforms,
Between Outputs
V DDA /V DDB
? V DD
to Figure 16 or Figure 17 should be treated as a bipolar ac wave-
form and its peak voltage should be limited to the 50-year lifetime
voltage value listed in Table 8.
Note that the voltage presented in Figure 16 is shown as sinu-
soidal for illustration purposes only. It is meant to represent any
V DDA /V DDB
GND A /GND B
? t
GND A /GND B
voltage waveform varying between 0 V and some limiting value.
The limiting value can be positive or negative, but the voltage
Figure 14. Transient Immunity Waveforms, Output Supplies
cannot cross 0 V.
RATED PEAK VOLTAGE
INSULATION LIFETIME
All insulation structures eventually break down when subjected
to voltage stress over a sufficiently long period. The rate of insu-
lation degradation depends on the characteristics of the voltage
waveform applied across the insulation. In addition to the testing
performed by the regulatory agencies, Analog Devices conducts
an extensive set of evaluations to determine the lifetime of the
insulation structure within the ADuM1234 .
Analog Devices performs accelerated life testing using voltage
levels higher than the rated continuous working voltage. Accel-
eration factors for several operating conditions are determined.
These factors allow calculation of the time to failure at the actual
working voltage.
Table 8 lists the peak voltages for 50 years of service life for
a bipolar ac operating condition and the maximum working
voltages recommended by Analog Devices. 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.
Rev. A | Page 10 of 12
0V
Figure 15. Bipolar AC Waveform
RATED PEAK VOLTAGE
0V
Figure 16. Unipolar AC Waveform
RATED PEAK VOLTAGE
0V
Figure 17. DC Waveform
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUM1234BRWZ-RL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Isolated, Precision Half-Bridge Driver, 0.1 A Output |
| ADUM1240ARSZ | 功能描述:General Purpose Digital Isolator 3750Vrms 2 Channel 2Mbps 25kV/μs CMTI 20-SSOP (0.209", 5.30mm Width) 制造商:analog devices inc. 系列:iCoupler? 包装:管件 零件状态:有效 技术:磁耦合 类型:通用 隔离式电源:无 通道数:2 输入 - 输入侧 1/输入侧 2:2/0 通道类型:单向 电压 - 隔离:3750Vrms 共模瞬态抗扰度（最小值）:25kV/μs 数据速率:2Mbps 传播延迟 tpLH / tpHL（最大值）:180ns，180ns 脉宽失真（最大）:8ns 上升/下降时间（典型值）:2ns， 2ns 电压 - 电源:2.25 V ~ 3.6 V 工作温度:-40°C ~ 125°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商器件封装:20-SSOP 标准包装:66 |
| ADUM1240ARSZ-RL7 | 功能描述:General Purpose Digital Isolator 3750Vrms 2 Channel 2Mbps 25kV/μs CMTI 20-SSOP (0.209", 5.30mm Width) 制造商:analog devices inc. 系列:iCoupler? 包装:带卷（TR） 零件状态:有效 技术:磁耦合 类型:通用 隔离式电源:无 通道数:2 输入 - 输入侧 1/输入侧 2:2/0 通道类型:单向 电压 - 隔离:3750Vrms 共模瞬态抗扰度（最小值）:25kV/μs 数据速率:2Mbps 传播延迟 tpLH / tpHL（最大值）:180ns，180ns 脉宽失真（最大）:8ns 上升/下降时间（典型值）:2ns， 2ns 电压 - 电源:2.25 V ~ 3.6 V 工作温度:-40°C ~ 125°C 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商器件封装:20-SSOP 标准包装:500 |
| ADUM1240ARZ | 功能描述:General Purpose Digital Isolator 3000Vrms 2 Channel 2Mbps 25kV/μs CMTI 8-SOIC (0.154", 3.90mm Width) 制造商:analog devices inc. 系列:iCoupler? 包装:管件 零件状态:有效 技术:磁耦合 类型:通用 隔离式电源:无 通道数:2 输入 - 输入侧 1/输入侧 2:2/0 通道类型:单向 电压 - 隔离:3000Vrms 共模瞬态抗扰度（最小值）:25kV/μs 数据速率:2Mbps 传播延迟 tpLH / tpHL（最大值）:180ns，180ns 脉宽失真（最大）:8ns 上升/下降时间（典型值）:2ns， 2ns 电压 - 电源:2.25 V ~ 3.6 V 工作温度:-40°C ~ 125°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 标准包装:98 |
| ADUM1240ARZ-RL7 | 功能描述:General Purpose Digital Isolator 3000Vrms 2 Channel 2Mbps 25kV/μs CMTI 8-SOIC (0.154", 3.90mm Width) 制造商:analog devices inc. 系列:iCoupler? 包装:带卷（TR） 零件状态:有效 技术:磁耦合 类型:通用 隔离式电源:无 通道数:2 输入 - 输入侧 1/输入侧 2:2/0 通道类型:单向 电压 - 隔离:3000Vrms 共模瞬态抗扰度（最小值）:25kV/μs 数据速率:2Mbps 传播延迟 tpLH / tpHL（最大值）:180ns，180ns 脉宽失真（最大）:8ns 上升/下降时间（典型值）:2ns， 2ns 电压 - 电源:2.25 V ~ 3.6 V 工作温度:-40°C ~ 125°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商器件封装:8-SOIC 标准包装:1,000 |
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