描述 Description

The MT88L70 is a complete 3 Volt, DTMF receiver integrating both the bandsplit filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface.

特性 Features

? 2.7 - 3.6 volt operation
? Complete DTMF receiver
? Low power consumption
? Internal gain setting amplifier
? Adjustable guard time
? Central office quality
? Power-down mode
? Inhibit mode
? Functionally compatible with Zarlink’s MT8870DApplications
? Paging systems
? Repeater systems/mobile radio
? Credit card systems
? Remote control
? Personal computers
? Telephone answering machine?

簡(jiǎn)介

MT88L70屬于集成電路（IC）的電信。由制造生產(chǎn)的MT88L70電信電信接口集成電路 (IC) 為通信網(wǎng)絡(luò)接口提供特定功能和控制，例如以太網(wǎng)切換、線路驅(qū)動(dòng)器、ISDN、放大器、通道擴(kuò)展器、數(shù)字鎖相環(huán)、DTMF、音頻發(fā)生器和解碼器、回聲消除、檢測(cè)器和發(fā)生器、DDA、電話線路監(jiān)控器和主叫號(hào)碼標(biāo)識(shí)。