Intersil HC55185 VoIP Ringing SLIC方案

Intersil 公司的HC55185是网上电话( VoIP)铃音用户接口电路( Ringing SLIC),支持中短回路长度的模拟POTS的无线和有线应用. RSLIC-VoIP系列工作到100V电压,用户线长度可扩展到500欧姆(即5000英尺)或更长.其它特性还包括低功耗,振铃信号采用正弦或梯形波,自动检测机制等. VoIP Ringing SLIC系列主要用在网络电话(VoIP),线缆调制解调器,DSL语音,短回路接入平台,遥控用户线单元以及终端适配器.本文介绍了HC55185的主要特性, 方框图, 基本应用电路图和所用元件列表,以及HC5518XEVAL 评估板的方框图,电路图和评估板元件列表.

The RSLIC-VoIP family of ringing subscriber line interface circuits (RSLIC) supports analog Plain Old Telephone Service (POTS) in short and medium loop length, wireless and wireline applications. Ideally suited for remote subscriber units, this family of products offers flexibility to designers with high ringing voltage and low power consumption system
requirements.

The RSLIC-VoIP family operates to 100V which translates directly to the amount of ringing voltage supplied to the end subscriber. With the high operating voltage, subscriber loop
lengths can be extended to 500Ω (i.e., 5,000 feet) and beyond.
Other key features across the product family include: low power consumption, ringing using sinusoidal or trapezoidal waveforms, robust auto-detection mechanisms for when ..

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