- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄374041 > ADUM1210 (Analog Devices, Inc.) Dual-Channel Digital Isolator PDF資料下載
參數(shù)資料
| 型號(hào)： | ADUM1210 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Dual-Channel Digital Isolator |
| 中文描述： | 雙通道數(shù)字隔離器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 184K |
| 代理商： | ADUM1210 |
ADuM1210
APPLICATION INFORMATION
PC BOARD LAYOUT
The ADuM1210 digital isolator requires no external interface
circuitry for the logic interfaces. Power supply bypassing is
strongly recommended at the input and output supply pins. The
capacitor value should be between 0.01 μF and 0.1 μF. The total
lead length between both ends of the capacitor and the input
power supply pin should not exceed 20 mm.
Rev. A | Page 14 of 16
PROPAGATION DELAY-RELATED PARAMETERS
Propagation delay is a parameter that describes the time it takes
a logic signal to propagate through a component. The propagation
delay to a logic low output can differ from the propagation
delay to a logic high output.
INPUT (V
IX
)
OUTPUT (V
OX
)
t
PLH
t
PHL
50%
50%
0
Figure 9. Propagation Delay Parameters
Pulse-width distortion is the maximum difference between the
two propagation delay values and is an indication of how
accurately the input signal’s timing is preserved.
Channel-to-channel matching refers to the maximum amount
that the propagation delay differs between channels within a
single ADuM1210 component.
Propagation delay skew refers to the maximum amount that
the propagation delay differs between multiple ADuM120x
components operating under the same conditions.
DC CORRECTNESS AND MAGNETIC FIELD IMMUNITY
Positive and negative logic transitions at the isolator input cause
narrow (~1 ns) pulses to be sent to the decoder via the transformer.
The decoder is bistable and is therefore either set or reset by the
pulses, indicating input logic transitions. In the absence of logic
transitions of more than 2 μs at the input, a periodic set of
refresh pulses indicative of the correct input state are sent to
ensure dc correctness at the output. If the decoder receives no
internal pulses for more than about 5 μs, the input side is
assumed to be unpowered or nonfunctional, in which case the
isolator output is forced to a default state (see Table 10) by the
watchdog timer circuit.
The ADuM1210 is extremely immune to external magnetic
fields. The limitation on the ADuM1210’s magnetic field
immunity is set by the condition in which induced voltage in
the transformer’s receiving coil is sufficiently large to either
falsely set or reset the decoder. The following analysis defines
the conditions under which this can occur. The 3 V operating
condition of the ADuM1210 is examined because it represents
the most susceptible mode of operation.
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,
therefore establishing a 0.5 V margin in which induced voltages
can be tolerated. The voltage induced across the receiving coil is
given by
∑
=
Π
=
n
r
dt
d
V
n
,
;
)
/
β
(
N
...
2
where:
β
is the magnetic flux density (gauss).
N
is the number of turns in the receiving coil.
r
n
is the radius of the nth turn in the receiving coil (cm).
Given the geometry of the receiving coil in the ADuM1210 and
an imposed requirement that the induced voltage is at most
50% of the 0.5 V margin at the decoder, a maximum allowable
magnetic field is calculated, as shown in Figure 10.
MAGNETIC FIELD FREQUENCY (Hz)
100
M
D
0.001
1M
10
0.01
1k
10k
10M
0.1
1
100M
100k
0
Figure 10. 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 occurs during a transmitted pulse
(and had 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 away from the
ADuM1210 transformers. Figure 11 expresses these allowable
current magnitudes as a function of frequency for selected
distances. As seen, the ADuM1210 is extremely immune and
can be affected only by extremely large currents operated at
high frequency and very close to the component. For the 1 MHz
example, one would have to place a 0.5 kA current 5 mm away
from the ADuM1210 to affect the component’s operation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADUM1210BRZ | Dual-Channel Digital Isolator |
| ADUM1210BRZ-RL7 | Dual-Channel Digital Isolator |
| ADUM1230 | Isolated Half-Bridge Driver, 0.1 A Amp Output |
| ADUM1230BRWZ | Isolated Half-Bridge Driver, 0.1 A Amp Output |
| ADUM1230BRWZ-RL | Isolated Half-Bridge Driver, 0.1 A Amp Output |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADUM1210BRZ | 功能描述:IC ISOLATOR DIGITAL DUAL 8SOIC RoHS:是 類別: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:390-1053-5 |
| ADUM1210BRZ | 制造商:Analog Devices 功能描述:IC DIGITAL ISOLATOR 50NS 制造商:Analog Devices 功能描述:IC, DIGITAL ISOLATOR, 50NS, NSOIC-8 |
| ADUM1210BRZ-RL7 | 功能描述:IC ISOLATOR DIGITAL DUAL 8-SOIC RoHS:是 類別: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 |
| ADUM121N0BRZ | 功能描述:General Purpose Digital Isolator 3000Vrms 2 Channel 150Mbps 75kV/μs CMTI 8-SOIC (0.154", 3.90mm Width) 制造商:analog devices inc. 系列:iCoupler? 包裝:管件 零件狀態(tài):有效 技術(shù):磁耦合 類型:通用 隔離式電源:無 通道數(shù):2 輸入 - 輸入側(cè) 1/輸入側(cè) 2:1/1 通道類型:單向 電壓 - 隔離:3000Vrms 共模瞬態(tài)抗擾度（最小值）:75kV/μs 數(shù)據(jù)速率:150Mbps 傳播延遲 tpLH / tpHL（最大值）:13ns，13ns 脈寬失真（最大）:3ns 上升/下降時(shí)間（典型值）:2.5ns，2.5ns 電壓 - 電源:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:98 |
| ADUM121N0BRZ-RL7 | 功能描述:General Purpose Digital Isolator 3000Vrms 2 Channel 150Mbps 75kV/μs CMTI 8-SOIC (0.154", 3.90mm Width) 制造商:analog devices inc. 系列:iCoupler? 包裝:帶卷（TR） 零件狀態(tài):有效 技術(shù):磁耦合 類型:通用 隔離式電源:無 通道數(shù):2 輸入 - 輸入側(cè) 1/輸入側(cè) 2:1/1 通道類型:單向 電壓 - 隔離:3000Vrms 共模瞬態(tài)抗擾度（最小值）:75kV/μs 數(shù)據(jù)速率:150Mbps 傳播延遲 tpLH / tpHL（最大值）:13ns，13ns 脈寬失真（最大）:3ns 上升/下降時(shí)間（典型值）:2.5ns，2.5ns 電壓 - 電源:1.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:1,000 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。