SIGFRED - A LOW-POWER DTMF AND SIGNALING FREQUENCY DETECTOR

被引：3

作者：

BECKER, R ^{[1
]}

MULDER, J ^{[1
]}

机构：

[1] NETHERLANDS PHILIPS BEDRIJVEN BV,DIV SEMICOND,EINDHOVEN,NETHERLANDS

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 1991年 / 26卷 / 07期

关键词：

D O I：

10.1109/4.92023

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A CMOS circuit is presented containing an analog switched-capacitor processor for detection of DTMF [1] and signaling tones on a telephone subscriber line and a digital detection algorithm for postprocessing. The major issues for the design were that it should be compatible with a CMOS fabrication process for microcontrollers (mu-C) to be included as an on-chip component and that its power consumption should be as low as possible. It has been designed to work with a current of less than 0.5 mA at low supply voltages (2.5-3 V). The maximum supply voltage is limited to 6 V by the process.

引用

页码：1027 / 1037

页数：11

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