MSM7718-01

Features:

*Single 3 V power supply VDD : 2.7 V to 3.6 V
*ADPCM  : ITU-T Recommendations G.726 (32 kbps)
*Full-Duplex single channel operation
*Transmit/receive synchronous mode
*PCM interface coding format : m -law
*Built-in line echo canceler
  Echo attenuation : 30 dB (typ.)
  Cancelable echo delay time :
    Normal speech mode : 23 ms (max.)
    Line echo canceler expansion mode : 54 ms (max.)
*Serial PCM/ADPCM transmission data rate :64 kbps to 2048 kbps
*Low power consumption
  Operating mode : Typically  66 mW (VDD = 3.0 V)
  Power-down mode : Typically  0.3 mW (VDD = 3.0 V)
*Two analog input gain adjustable amplifier stages
*Analog output stage : Push-pull drive, (direct drive of 350 W + 120 nF)
*Master clock frequency : 9.600/19.200 MHz
*Transmit/receive mute, transmit/receive programmable gain control
*Built-in DTMF tone generator and various ringing tones generator
*DTMF tone and call progress tone detection
*Serial MCU interface control
*Built-in VOX control
  Transmit side : Voice/silence detect
  Receive side : Background noise generation at the absence of voice signal
*Built-in 2100 Hz tone detection (bidirectional)
*Package:
 100-pin plastic TQFP (TQFP100-1414-0.50-K) (Product name : MSM7718-01TS-K)

Pinout




Specifications




Description

The MSM7718-01, developed for PHS (Personal Handyphone System) applications, is a CMOS LSI device and contains aline echo canceler and a single channel full-duplex ADPCM transcoder that performs interconversion between voice-band analog signal and 32 kbps ADPCM data.This MSM7718-01 includes DTMF tone and several types of tone generation, transmit/receive data mute and gain control, and VOX function and is best suited for master telephones in PHS applications.