参数资料
| 型号： | ADM2481BRWZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX ISOLATED RS-485 16SOIC |
| 标准包装： | 47 |
| 系列： | iCoupler® |
| 类型： | 收发器，隔离式 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS422/RS485 |
| 电源电压： | 3.3V，5V |
| 安装类型： | 表面贴装 |
| 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 |
Data Sheet
ADM2481
Rev. A | Page 15 of 20
Given the geometry of the receiving coil 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 27.
100.000
10.000
1.000
0.100
0.010
0.001
1k
10k
100k
1M
10M
100M
MAGNETIC FIELD FREQUENCY (Hz)
MA
XI
MU
M
A
LLO
W
ABL
E
M
AG
NE
T
IC
F
L
UX
DE
NS
IT
Y
(
kG
AUS
S
)
08920-
027
Figure 27. 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 is the worst-case polarity, it reduces the received pulse from
>1.0 V to 0.75 V. This is well above the 0.5 V sensing threshold
of the decoder.
These magnetic flux density values are shown in Figure 28,
using more familiar quantities such as maximum allowable
current flow, at given distances away from the ADM2481
transformers.
1000.00
100.00
0.10
1.00
10.00
0.01
1k
10k
100k
1M
10M
100M
MAGNETIC FIELD FREQUENCY (Hz)
MA
XI
MU
M
A
LLO
W
ABL
E
CURRE
NT
(
kA)
DISTANCE = 1m
DISTANCE = 5mm
DISTANCE = 100mm
08920-
028
Figure 28. Maximum Allowable Current for Various
Current-to-ADM2481 Spacings
At combinations of strong magnetic field and high frequency,
any loops formed by printed circuit board traces could induce
large enough error voltages to trigger the thresholds of succeed-
ing circuitry. To avoid this possibility, take care in the layout of
such traces.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM2481BRWZ-RL7 | 功能描述:IC TXRX ISOLATED RS-485 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:iCoupler® 标准包装:27 系列:- 类型:收发器 驱动器/接收器数:3/3 规程:RS232，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| ADM2482E | 制造商:AD 制造商全称:Analog Devices 功能描述:2.5 kV Isolated RS-485 Transceivers with Integrated Transformer Driver |
| ADM2482EBRWZ | 功能描述:IC TXRX RS485 ISO W/ESD 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1 系列:- 类型:线路收发器 驱动器/接收器数:5/3 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:Digi-Reel® 产品目录页面:918 (CN2011-ZH PDF) 其它名称:296-25096-6 |
| ADM2482EBRWZ-REEL7 | 功能描述:IC TXRX RS485 ISO W/ESD 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:250 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| ADM2483 | 制造商:AD 制造商全称:Analog Devices 功能描述:Half-Duplex iCoupler-R Isolated RS-485 Transceiver |
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