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| 型号： | ADUM5202ARWZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 21/28页 |
| 文件大小： | 0K |
| 描述： | IC DGTL ISOLATOR W/DC-DC 16SOIC |
| 其它图纸： | ADUM5200 Series Dual ADUM5202 Series |
| 标准包装： | 47 |
| 系列： | IsoPower®, iCoupler® |
| 输入 - 1 侧/2 侧： | 0/2 |
| 通道数： | 2 |
| 电源电压： | 3.3V，5V |
| 电压 - 隔离： | 2500Vrms |
| 数据速率： | 1Mbps |
| 传输延迟： | 55ns |
| 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： | 管件 |
| 工作温度： | -40°C ~ 105°C |
| 产品目录页面： | 2766 (CN2011-ZH PDF) |
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Data Sheet
For example, at a magnetic field frequency of 1 MHz, the
ADuM5200/ADuM5201/ADuM5202
maximum allowable magnetic field of 0.2 kgauss induces a
I DD1(Q)
I ISO
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 is of the worst-case polarity), it reduces the received pulse
from >1.0 V to 0.75 V—still well above the 0.5 V sensing
threshold of the decoder.
I DD1(D)
CONVERTER
PRIMARY
I DDP(D)
PRIMARY
DATA I/O
2-CHANNEL
CONVERTER
SECONDARY
I ISO(D)
SECONDARY
DATA I/O
2-CHANNEL
The preceding magnetic flux density values correspond to specific
current magnitudes at given distances from the ADuM5200 /
ADuM5201 / ADuM5202 transformers. Figure 26 expresses
these allowable current magnitudes as a function of frequency
for selected distances. As shown, the ADuM5200 / ADuM5201 /
ADuM5202 are extremely immune and can be affected only by
extremely large currents operated at high frequency very close
to the component. For the 1 MHz example noted, a 0.5 kA current
placed 5 mm away from the ADuM5200 / ADuM5201 / ADuM5202
is required to affect the operation of the component.
1000
Figure 27. Power Consumption Within the ADuM5200 / ADuM5201 / ADuM5202
Both dynamic input and output current is consumed only when
operating at channel speeds higher than the rate of f r . Because
each channel has a dynamic current determined by its data rate,
Figure 19 shows the current for a channel in the forward direction,
which means that the input is on the primary side of the part.
Figure 20 shows the current for a channel in the reverse direction,
which means that the input is on the secondary side of the part.
Both figures assume a typical 15 pF load. The following
relationship allows the total I DD1 current to be calculated:
100
DISTANCE = 1m
I DD1 = ( I ISO × V ISO )/( E × V DD1 ) + ∑ I CHn ; n = 1 to 4
where:
I DD1 is the total supply input current.
(1)
10
DISTANCE = 100mm
I CHn is the current drawn by a single channel determined from
Figure 19 or Figure 20, depending on channel direction.
I ISO is the current drawn by the secondary side external loads.
1
0.1
DISTANCE = 5mm
E is the power supply efficiency at 100 mA load from Figure 9
at the V ISO and V DD1 condition of interest.
Calculate the maximum external load by subtracting the dynamic
output load from the maximum allowable load.
0.01
1k
10k
100k
1M
10M
100M
I ISO (LOAD) = I ISO (MAX) ? ∑ I ISO (D)n ; n = 1 to 4
(2)
MAGNETIC FIELD FREQUENCY (Hz)
Figure 26. Maximum Allowable Current for Various Current-to-
ADuM5200 / ADuM5201 / ADuM5202 Spacings
Note that at combinations of strong magnetic field and high
frequency, any loops formed by PCB traces can induce error
voltages sufficiently large enough to trigger the thresholds of
succeeding circuitry. Exercise care in the layout of such traces
to avoid this possibility.
POWER CONSUMPTION
The V DD1 power supply input provides power to the i Coupler data
channels as well as to the power converter. For this reason, the
quiescent currents drawn by the data converter and the primary
and secondary input/output channels cannot be determined sepa-
rately. All of these quiescent power demands have been combined
into the I DD1 (Q) current shown in Figure 27. The total I DD1 supply
current is the sum of the quiescent operating current, dynamic
current I DD1 (D) demanded by the I/O channels, and any external
I ISO load.
where:
I ISO (LOAD) is the current available to supply an external secondary
side load.
I ISO (MAX) is the maximum external secondary side load current
available at V ISO .
I ISO (D)n is the dynamic load current drawn from V ISO by an input
or output channel, as shown in Figure 19 and Figure 20. Data is
presented assuming a typical 15 pF load.
The preceding analysis assumes a 15 pF capacitive load on each
data output. If the capacitive load is larger than 15 pF, the addi-
tional current must be included in the analysis of I DD1 and I ISO (LOAD) .
To determine I DD1 in Equation 1, additional primary side
dynamic output current (I AOD ) is added directly to I DD1 .
Additional secondary side dynamic output current (I AOD ) is
added to I ISO on a per-channel basis.
To determine I ISO (LOAD) in Equation 2, additional secondary
side output current (I AOD ) is subtracted from I ISO (MAX) on a
per-channel basis.
Rev. B | Page 21 of 28
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADUM5202ARWZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Channel Isolators with Integrated DC/DC Converter |
| ADUM5202ARWZ2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Channel Isolators with Integrated DC/DC Converter |
| ADUM5202ARWZ-RL | 功能描述:IC DIG ISOLATOR W/DC-DC 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:IsoPower®, 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 |
| ADUM5202CRWZ | 功能描述:IC DGTL ISOLATOR W/DC-DC 16SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:IsoPower®, 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 |
| ADUM5202CRWZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual-Channel Isolators with Integrated DC/DC Converter |
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