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參數(shù)資料
| 型號(hào)： | SI8440 |
| 廠商： | Silicon Laboratories Inc. |
| 英文描述： | QUAD-CHANNEL DIGITAL ISOLATOR |
| 中文描述： | 四通道數(shù)字隔離 |
| 文件頁數(shù)： | 15/24頁 |
| 文件大小： | 436K |
| 代理商： | SI8440 |
Si8440/1/2
Rev. 0.3
15
3. Application Information
3.1. Theory of Operation
The operation of an Si8440 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 Si8440 channel is shown in
Figure 12. A channel consists of an RF transmitter and receiver separated by a transformer.
Referring to the transmitter, input A modulates the carrier provided by an RF oscillator using on/off keying and
applies the resulting waveform to the primary of the transformer. 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.
3.2. Eye Diagram
Figure 13 illustrates an eye-diagram taken on an Si8440-IS. The test used an Anritsu (MP1763C) Pulse Pattern
Generator for the data source. The output of the generator's clock and data from an Si8440-IS were captured on an
oscilloscope. The results illustrate that data integrity was maintained even at the high data rate of 150 Mbps. The
results also show that very low pulse width distortion and very little jitter were exhibited.
Figure 12. Simplified Channel Diagram
Figure 13. Eye Diagram
TRANSMITTER
RECEIVER
RF
OSCILLATOR
MODULATOR
DEMODULATOR
A
B
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SI8440-A-IS | QUAD-CHANNEL DIGITAL ISOLATOR |
| SI8440-B-IS | QUAD-CHANNEL DIGITAL ISOLATOR |
| SI8440-C-IS | QUAD-CHANNEL DIGITAL ISOLATOR |
| SI8441 | QUAD-CHANNEL DIGITAL ISOLATOR |
| SI8441-A-IS | QUAD-CHANNEL DIGITAL ISOLATOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI8440AA-C-IS1 | 功能描述:隔離器接口集成電路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube |
| Si8440AA-C-IS1R | 功能描述:隔離器接口集成電路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube |
| Si8440AA-D-IS1 | 功能描述:隔離器接口集成電路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube |
| SI8440AA-D-IS1R | 功能描述:隔離器接口集成電路 QuadCh 1.0kV Isolatr 1M 4/0 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube |
| Si8440AB-C-IS | 功能描述:隔離器接口集成電路 Quad Ch 2.5kV Isolator 1M 4/0 RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 傳播延遲時(shí)間: 電源電壓-最大:5.5 V 電源電壓-最小:3 V 電源電流:3.6 mA 功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:SOIC-8 封裝:Tube |
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