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参数资料
| 型号： | ADUM6401CRWZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 23/28页 |
| 文件大小： | 0K |
| 描述： | IC ISOLATOR 4CH DCDC CONV 16SOIC |
| 标准包装： | 1,000 |
| 系列： | IsoPower®, iCoupler® |
| 输入 - 1 侧/2 侧： | 3/1 |
| 通道数： | 4 |
| 电源电压： | 4.25V，5V |
| 电压 - 隔离： | 5000Vrms |
| 数据速率： | 25Mbps |
| 传输延迟： | 60ns |
| 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 |
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Data Sheet
ADuM6400/ADuM6401/ADuM6402/ADuM6403/ADuM6404
For example, at a magnetic field frequency of 1 MHz, the
I DD1(Q)
I ISO
maximum allowable magnetic field of 0.2 kgauss induces a
voltage of 0.25 V at the receiving coil. This voltage is approxi-
mately 50% of the sensing threshold and does not cause a faulty
output transition. Similarly, if such an event occurs during a
I DD1(D)
CONVERTER
PRIMARY
I DDP(D)
CONVERTER
SECONDARY
I ISO(D)
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.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances from the
PRIMARY
DATA
INPUT/OUTPUT
4-CHANNEL
SECONDARY
DATA
INPUT/OUTPUT
4-CHANNEL
ADuM640x transformers. Figure 30 expresses these allowable
current magnitudes as a function of frequency for selected
distances. As shown in Figure 30, the ADuM640x is 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 ADuM640x is required to affect the operation of the device.
1k
DISTANCE = 1m
100
Figure 31. Power Consumption Within the ADuM640x
Both dynamic input and output current is consumed only
when operating at channel speeds higher than the refresh
rate, f r . Each channel has a dynamic current determined by
its data rate. Figure 23 shows the current for a channel in the
forward direction, which means that the input is on the primary
side of the part. Figure 24 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:
I DD1 = ( I ISO × V ISO )/( E × V DD1 ) + ∑ I CHn ; n = 1 to 4
(1)
10
1
0.1
DISTANCE = 100mm
DISTANCE = 5mm
where:
I DD1 is the total supply input current.
I ISO is the current drawn by the secondary side external loads.
E is the power supply efficiency at the maximum load from
Figure 13 at the V ISO and V DD1 condition of interest.
I CHn is the current drawn by a single channel, determined from
Figure 23 or Figure 24, depending on channel direction.
0.01
1k
10k
100k
1M
10M
100M
Calculate the maximum external load by subtracting the
MAGNETIC FIELD FREQUENCY (Hz)
dynamic output load from the maximum allowable load.
Figure 30. Maximum Allowable Current
for Various Current-to- ADuM640x Spacings
I ISO(LOAD) = I ISO(MAX) ? ∑ I ISO(D)n ; n = 1 to 4
(2)
Note that at combinations of strong magnetic field and high
frequency, any loops formed by PCB traces can induce error
voltages sufficiently large 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
separately. All of these quiescent power demands are combined
into the I DD1(Q) current shown in Figure 31. The total I DD1 supply
current is the sum of the quiescent operating current, the 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 23 and Figure 24 for a
typical 15 pF load.
This analysis assumes a 15 pF capacitive load on each data output.
If the capacitive load is larger than 15 pF, the additional 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. A | Page 23 of 28
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| ADUM6402 | 制造商:AD 制造商全称:Analog Devices 功能描述:Quad-Channel Isolators with Integrated DC-to-DC Converter |
| ADUM6402ARIZ | 功能描述:隔离器接口集成电路 8mm creepage 4-Ch 5kV Dig Iso Int DC/DC 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 |
| ADUM6402ARIZ-RL | 功能描述:隔离器接口集成电路 8mm creepage 4-Ch 5kV Dig Iso Int DC/DC 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 |
| ADUM6402ARWZ | 功能描述:IC ISOLATOR 4CH DCDC CONV 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 |
| ADUM6402ARWZ | 制造商:Analog Devices 功能描述:IC DIGITAL ISOLATOR 100NS WSOIC-16 制造商:Analog Devices 功能描述:IC, DIGITAL ISOLATOR, 100NS, WSOIC-16 |
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