參數(shù)資料
型號(hào)： ADUM3300
廠(chǎng)商： Analog Devices, Inc.
英文描述： Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
中文描述： 三通道數(shù)字隔離器，提高其系統(tǒng)級(jí)靜電放電的可靠性
文件頁(yè)數(shù)： 18/20頁(yè)
文件大?。?/td> 223K
代理商： ADUM3300
ADuM3300/ADuM3301
The pulses at the transformer output have an amplitude greater
than 1.0 V The decoder has a sensing threshold at about 0.5 V thus
establishing a 0.5 V margin in which induced voltages can be
tolerated. The voltage induced across the receiving coil is given by
V
= (
d
β
/dt
)
∑
∏
r
n2
; n
= 1, 2, … ,
N
where:
β is magnetic flux density (gauss).
N
is the number of turns in the receiving coil.
r
n
is the radius of the n
th
turn in the receiving coil (cm).
Rev. 0 | Page 18 of 20
Given the geometry of the receiving coil in the ADuM330x and
an imposed requirement that the induced voltage be at most
50% of the 0.5 V margin at the decoder, a maximum allowable
magnetic field is calculated as shown in Figure 16.
MAGNETIC FIELD FREQUENCY (Hz)
100
M
D
0.001
1M
10
0.01
1k
10k
10M
0.1
1
100M
100k
0
Figure 16. Maximum Allowable External Magnetic Flux Density
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.
The preceding magnetic flux density values correspond to
specific current magnitudes at given distances from the
ADuM330x transformers. Figure 17 expresses these allowable
current magnitudes as a function of frequency for selected
distances. The ADuM330x is extremely immune and can be
affected only by extremely large currents operated at high
frequency very close to the component (see Figure 17). For the
1 MHz example noted, one would have to place a 0.5 kA current
5 mm away from the ADuM330x to affect the component’s
operation.
MAGNETIC FIELD FREQUENCY (Hz)
M
1000
100
10
1
0.1
0.01
1k
10k
100M
100k
1M
10M
DISTANCE = 5mm
DISTANCE = 1m
DISTANCE = 100mm
0
Figure 17. Maximum Allowable Current for Various Current-to-ADuM330x
Spacings
Note that at combinations of strong magnetic field and high
frequency, any loops formed by printed circuit board traces
could induce error voltages sufficiently large enough to trigger
the thresholds of succeeding circuitry. Care should be taken in
the layout of such traces to avoid this possibility.
相關(guān)PDF資料
PDF描述
ADUM3300ARWZ Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
ADUM3300BRWZ Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
ADUM3300CRWZ Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
ADUM3301 Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
ADUM3301ARWZ Triple-Channel, Digital Isolators, Enhanced System-Level ESD Reliability
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ADUM3300ARWZ-RL 功能描述:IC DIGITAL ISOLATOR 3CH 16-SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:iCoupler® 產(chǎn)品培訓(xùn)模塊:IsoLoop® Isolator 標(biāo)準(zhǔn)包裝:50 系列:IsoLoop® 輸入 - 1 側(cè)/2 側(cè):5/0 通道數(shù):5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:110Mbps 傳輸延遲:12ns 輸出類(lèi)型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱(chēng):390-1053-5
ADUM3300BRWZ 功能描述:IC DIGITAL ISOLATOR 3CH 16-SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:iCoupler® 標(biāo)準(zhǔn)包裝:66 系列:iCoupler® 輸入 - 1 側(cè)/2 側(cè):2/2 通道數(shù):4 電源電壓:3.3V，5V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:25Mbps 傳輸延遲:60ns 輸出類(lèi)型:邏輯 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:管件 工作溫度:-40°C ~ 105°C
ADUM3300BRWZ-RL 功能描述:IC DIGITAL ISOLATOR 3CH 16-SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:iCoupler® 產(chǎn)品培訓(xùn)模塊:IsoLoop® Isolator 標(biāo)準(zhǔn)包裝:50 系列:IsoLoop® 輸入 - 1 側(cè)/2 側(cè):5/0 通道數(shù):5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:110Mbps 傳輸延遲:12ns 輸出類(lèi)型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱(chēng):390-1053-5
ADUM3300CRWZ 功能描述:IC DIGITAL ISOLATOR 3CH 16-SOIC RoHS:是 類(lèi)別:隔離器 >> 數(shù)字隔離器 系列:iCoupler® 產(chǎn)品培訓(xùn)模塊:IsoLoop® Isolator 標(biāo)準(zhǔn)包裝:50 系列:IsoLoop® 輸入 - 1 側(cè)/2 側(cè):5/0 通道數(shù):5 電源電壓:3 V ~ 5.5 V 電壓 - 隔離:2500Vrms 數(shù)據(jù)速率:110Mbps 傳輸延遲:12ns 輸出類(lèi)型:CMOS 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC N 包裝:管件 工作溫度:-40°C ~ 85°C 其它名稱(chēng):390-1053-5
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