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參數資料
| 型號： | ADUM1400 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Quad-Channel Digital Isolators |
| 中文描述： | 四通道數字隔離器 |
| 文件頁數： | 20/24頁 |
| 文件大?。?/td> | 797K |
| 代理商： | ADUM1400 |
ADuM1400/ADuM1401/ADuM1402
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 were to occur during a transmitted
pulse (and was of the worst-case polarity), it would reduce the
received pulse from > 1.0 V to 0.75 V—still well above the 0.5 V
sensing threshold of the decoder.
Rev. B | Page 20 of 24
The preceding magnetic flux density values correspond to specific
current magnitudes at given distances from the ADuM140x trans-
formers.
Figure 20
expresses these allowable current magnitudes as
a function of frequency for selected distances. As seen, the
ADuM140x is extremely immune and can be affected only by ex-
tremely large currents operated at high frequency, very close to the
component. For the 1 MHz example noted, one would have to place
a 0.5 kA current 5 mm away from the ADuM140x to affect the
component’s operation.
MAGNETIC FIELD FREQUENCY (Hz)
M
1000.00
100.00
10.00
1.00
0.10
0.01
1k
10k
100M
100k
1M
10M
DISTANCE = 5mm
DISTANCE = 1m
DISTANCE = 100mm
0
Figure 20. Maximum Allowable Current
for Various Current-to-ADuM140x Spacings
Note that at combinations of strong magnetic field and high
frequency, any loops formed by printed circuit board traces
could induce sufficiently large error voltages to trigger the
thresholds of succeeding circuitry. Care should be taken in the
layout of such traces to avoid this possibility.
POWER CONSUMPTION
The supply current at a given channel of the ADuM140x isola-
tor is a function of the supply voltage, the channel’s data rate,
and the channel’s output load.
For each input channel, the supply current is given by
I
DDI
= I
DDI
(
Q
)
f
≤ 0.5
f
r
I
DDI
=
I
DDI (D)
× (2
f
–
f
r
) + I
DDI
(
Q
)
f > 0.5
f
r
For each output channel, the supply current is given by
I
DDO
= I
DDO
(
Q
)
f
≤ 0.5
f
r
I
DDO
= (
I
DDO
(
D
)
+ (0.5 × 10
3
) ×
C
L
V
DDO
) × (2
f – f
r
) +
I
DDO
(
Q
)
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 output load capacitance (pF).
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 sup-
ply currents (mA).
To calculate the total I
DD1
and I
DD2
supply current, the supply
currents for each input and output channel corresponding to
I
DD1
and I
DD2
are calculated and totaled. Figure 8 and Figure 9
provide per-channel supply currents as a function of data rate
for an unloaded output condition. Figure 10 provides per-
channel supply current as a function of data rate for a 15 pF
output condition. Figure 11 through Figure 14 provide total
I
DD1
and I
DD2
supply current as a function of data rate for
ADuM1400/ADuM1401/ADuM1402 channel configurations.
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| ADUM1400ARW | 功能描述:IC DIGITAL ISOLATOR 4CH 16-SOIC RoHS:否 類別:隔離器 >> 數字隔離器 系列:iCoupler® 產品培訓模塊:IsoLoop® Isolator 標準包裝:50 系列:IsoLoop® 輸入 - 1 側/2 側:5/0 通道數:5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數據速率:110Mbps 傳輸延遲:12ns 輸出類型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱:390-1053-5 |
| ADUM1400ARW-RL | 功能描述:IC DIGITAL ISOL 4-CH 16SOIC TR RoHS:否 類別:隔離器 >> 數字隔離器 系列:iCoupler® 產品培訓模塊:IsoLoop® Isolator 標準包裝:50 系列:IsoLoop® 輸入 - 1 側/2 側:5/0 通道數:5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數據速率:110Mbps 傳輸延遲:12ns 輸出類型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱:390-1053-5 |
| ADUM1400ARWZ | 功能描述:IC DIGITAL ISOLATOR 4CH 16-SOIC RoHS:是 類別:隔離器 >> 數字隔離器 系列:iCoupler® 產品培訓模塊:IsoLoop® Isolator 標準包裝:50 系列:IsoLoop® 輸入 - 1 側/2 側:5/0 通道數:5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數據速率:110Mbps 傳輸延遲:12ns 輸出類型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應商設備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱:390-1053-5 |
| ADUM1400ARWZ-RL | 功能描述:IC DGITAL ISOLATOR 4CH 16-SOIC RoHS:是 類別:隔離器 >> 數字隔離器 系列:iCoupler® 標準包裝:66 系列:iCoupler® 輸入 - 1 側/2 側:2/2 通道數:4 電源電壓:3.3V，5V 電壓 - 隔離:2500Vrms 數據速率:25Mbps 傳輸延遲:60ns 輸出類型:邏輯 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:管件 工作溫度:-40°C ~ 105°C |
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