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首頁 >> 産品 >>通信類 >>電話機類 >> DTMF來電顯示解碼電路 CSC9270

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DTMF來電顯示解碼電路 CSC9270

産品型号：: CSC9270

産品名称：: DTMF來電顯示解碼電路

封裝形式：: DIP18 / SOP18 / DIE

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CSC9270是一個完整的雙音多頻接收器電路，具有頻帶分離濾波器和數字解碼功能。濾波器部分采用開關電容技術用于將撥號音頻信號分離成高頻組信號和低頻組信號。在解碼器中使用數字計數技術來檢測所有16種雙音多頻音頻對，並把它們編成4位碼。由于片上備有差動輸入放大器、時鍾振蕩器和三態鎖存總線接口，因此外接元件數減至最少。此電路爲數模混合的CMOS電路，采用1.2um雙層多晶單層鋁的設計規則，芯片面積爲（不含劃片槽）2.966×1.697mm2。

● 采用3.57954MHz晶体或时钟
● 性能卓越
● CMOS单5V电源工作
● 印刷版面积最小
● 功耗小
● 省电模式
● 禁止模式
● 内含开关电容滤波器
● 封裝形式：DIP18 / SOP18 / DI

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