IL2533A - IK Semiconductor

IL2533A MULTISTANDARD CMOS IC

IL2533AN, IL2533AD is CMOS IC, supporting all functions, necessary for design of electronic telephone with high characteristics. Standard application circuit is shown at figure 2. Device includes LD/MF constant automatic dialer, melodies generation, ring frequency identification and high quality circuit for line/speech. RAM at chip, intended for redialing of.

Features

─ Line/speech circuit. LD/MF constant automatic dialer and tone ring at one 28-pin CMOS chip. ─ Operational range 13 to 100 mА (decreasing upto 5 mА causes productivity deterioration). ─ Soft limitation for elimination of drastic distortion. ─ Controlling of received signal volume. ─ Automatic line loss compensation. ─ Low noise level (max
  – 72 dBmp). ─ Actual or complex impedance. ─ Switching LD/MF dialing. ─ Tone damper during programming. ─ Redial of the last 31 digit number. ─ Reference storage. ─ Redial of busy line or previous connection. ─ Pause button for applying to pause or waiting f.