参数资料
| 型号： | ADM2483BRWZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/20页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 ISOLATED 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 |
| 包装： | 管件 |
| 产品目录页面： | 790 (CN2011-ZH PDF) |
ADM2483
Data Sheet
Rev. C | Page 16 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
04736-027
MAGNETIC FIELD FREQUENCY (Hz)
MAXIMUM
ALLOWABLE
MAGNETIC
FLUX
DENSITY
(kGAUSS)
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 ADM2483
transformers.
1000.00
100.00
0.10
1.00
10.00
0.01
1k
10k
100k
1M
10M
100M
04736-028
MAGNETIC FIELD FREQUENCY (Hz)
MAXIMUM
ALLOWABLE
CURRENT
(kA)
DISTANCE = 1m
DISTANCE = 5mm
DISTANCE = 100mm
Figure 28. Maximum Allowable Current for Various
Current-to-ADM2483 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
succeeding circuitry. To avoid this possibility, care should be
taken in the layout of such traces.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM2483BRWZ | 制造商:Analog Devices 功能描述:RS-485 IC |
| ADM2483BRWZ-REEL | 功能描述:IC TXRX RS-485 ISOLATED 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 |
| ADM2484E | 制造商:AD 制造商全称:Analog Devices 功能描述:500 kbps, ESD Protected, Half-/Full-Duplex, iCoupler, Isolated RS-485 Transceiver |
| ADM2484EBRWZ | 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:- 产品培训模块:RS-232 & USB Transceiver 标准包装:2,000 系列:- 类型:收发器 驱动器/接收器数:1/1 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-SSOP（0.209"，5.30mm 宽） 供应商设备封装:16-SSOP 包装:带卷 (TR) 其它名称:296-19849-2 |
| ADM2484EBRWZ-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: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 |
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