Oki Electric Industry MSM7718-01
The MSM7718, developed for PHS (Personal Handyphone System) applications, is a CMOS LSI device and contains a line echo canceler and a single channel full-duplex ADPCM transcoder that performs interconversion between voice-band analog signal and 32 kbps ADPCM data. This device 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.| Part No. | MSM7718-01 |
|---|---|
| Datasheet | MSM7718-01 Download |
| Manufacturer | Oki Electric Industry |
| Description | Echo Canceler with ADPCM CODEC |
| Buy | Stock & Price |
GENERAL DESCRIPTION
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 : µ -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...
