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参数资料
| 型号： | ADUM1201CRZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 25/28页 |
| 文件大小： | 0K |
| 描述： | IC ISOLATOR DIGITAL DUAL 8-SOIC |
| 其它图纸： | ADUMx201 Series Block Diagram |
| 标准包装： | 1 |
| 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： | 50Mbps |
| 传输延迟： | 45ns |
| 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： | 标准包装 |
| 工作温度： | -40°C ~ 105°C |
| 产品目录页面： | 2766 (CN2011-ZH PDF) |
| 其它名称： | ADUM1201CRZ-RL7DKR |
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Data Sheet
For example, at a magnetic field frequency of 1 MHz, the
maximum allowable magnetic field of 0.2 kgauss induces a
voltage of 0.25 V at the receiving coil. This is about 50% of the
sensing threshold and does not cause a faulty output transition.
Similarly, if such an event occurs during a transmitted pulse
(and has the worst-case polarity), it reduces the received pulse
ADuM1200/ADuM1201
POWER CONSUMPTION
The supply current at a given channel of the ADuM120x
isolator is a function of the supply voltage, the data rate of the
channel, and the output load of the channel.
For each input channel, the supply current is given by
from >1.0 V to 0.75 V—still well above the 0.5 V sensing
threshold of the decoder.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances away from the
ADuM120x transformers. Figure 14 expresses these allowable
I DDI = I DDI (Q)
I DDI = I DDI (D) × (2 f ? f r ) + I DDI (Q)
For each output channel, the supply current is given by
I DDO = I DDO (Q)
f ≤ 0.5 f r
f > 0.5 f r
f ≤ 0.5 f r
I DDO = ( I DDO ( D ) + (0.5 × 10 ) × C L V DDO ) × (2 f ? f r ) + I DDO ( Q )
current magnitudes as a function of frequency for selected
distances. As seen, the ADuM120x are extremely immune and
can be affected only by extremely large currents operating very
close to the component at a high frequency. For the 1 MHz
example, a 0.5 kA current would have to be placed 5 mm away
from the ADuM120x to affect the operation of the component.
1000
?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).
100
10
1
0.1
DISTANCE = 100mm
DISTANCE = 5mm
DISTANCE = 1m
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 currents, the supply
currents for each input and output channel corresponding to
I DD1 and I DD2 are calculated and totaled. Figure 6 and Figure 7
provide per-channel supply currents as a function of data rate
0.01
1k
10k
100k
1M
10M
100M
for an unloaded output condition. Figure 8 provides per-
channel supply current as a function of data rate for a 15 pF
MAGNETIC FIELD FREQUENCY (Hz)
Figure 14. Maximum Allowable Current for Various
Current-to-ADuM120x Spacings
output condition. Figure 9 through Figure 11 provide total
V DD1 and V DD2 supply current as a function of data rate for
ADuM1200 and ADuM1201 channel configurations.
Note that, at combinations of strong magnetic fields and high
frequencies, any loops formed by PCB traces can induce suffi-
ciently large error voltages to trigger the threshold of succeeding
circuitry. Care should be taken in the layout of such traces to
avoid this possibility.
Rev. I | Page 25 of 28
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