参数资料
型号: SI8440AA-C-IS1R
厂商: Silicon Laboratories Inc
文件页数: 18/38页
文件大小: 0K
描述: IC ISOLATOR DGTL 4CH 16SOIC
视频文件: Digital Isolation Overview
Digital Isolators vs. Optocouplers
标准包装: 2,500
系列: ISOpro
输入 - 1 侧/2 侧: 4/0
通道数: 4
电源电压: 2.7 V ~ 5.5 V
电压 - 隔离: 1000Vrms
数据速率: 1Mbps
传输延迟: 35ns
输出类型: 三态
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC N
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
Si8440/41/42/45
2. Functional Description
2.1. Theory of Operation
The operation of an Si844x channel is analogous to that of an opto coupler, except an RF carrier is modulated
instead of light. This simple architecture provides a robust isolated data path and requires no special
considerations or initialization at start-up. A simplified block diagram for a single Si844x channel is shown in
Figure 5.
Transmitter
RF
OSCILLATOR
Semiconductor-
Receiver
A
MODULATOR
Based Isolation
Barrier
DEMODULATOR
B
Figure 5. Simplified Channel Diagram
A channel consists of an RF Transmitter and RF Receiver separated by a semiconductor-based isolation barrier.
Referring to the Transmitter, input A modulates the carrier provided by an RF oscillator using on/off keying. The
Receiver contains a demodulator that decodes the input state according to its RF energy content and applies the
result to output B via the output driver. This RF on/off keying scheme is superior to pulse code schemes as it
provides best-in-class noise immunity, low power consumption, and better immunity to magnetic fields. See
Figure 6 for more details.
Input Signal
Modulation Signal
Output Signal
Figure 6. Modulation Scheme
18
Rev. 1.6
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Si8440AA-D-IS1 功能描述:隔离器接口集成电路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube
SI8440AA-D-IS1R 功能描述:隔离器接口集成电路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube
Si8440AB-C-IS 功能描述:隔离器接口集成电路 Quad Ch 2.5kV Isolator 1M 4/0 RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube
SI8440AB-C-IS1 功能描述:隔离器接口集成电路 QuadCh 2.5kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube
Si8440AB-C-IS1R 功能描述:隔离器接口集成电路 QuadCh 2.5kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道数量:2 传播延迟时间: 电源电压-最大:5.5 V 电源电压-最小:3 V 电源电流:3.6 mA 功率耗散: 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:SOIC-8 封装:Tube