AN6426NK - Panasonic Semiconductor

AN6426NK Hands-free Speech Network IC

Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Symbol GND AGC SAO SAI Vr2 VPO RO1 RO2 RBO RPO RPI MAI1 MAO1 TL1 TLO ND1 ND2 TAI TAO ATC TAC Ground Loudspeaker amp. time constant Loudspeaker amp. output Loudspeaker amp. input Reference voltage (2) Loudspeaker amp. power supply Receiver output (1) Receiver output (2) Receiver buffer output Rece.

Features

• Incorporates all the functions required of a hands-free telephone.
• Incorporates all the functions required of a handset.
• Complies with AC and DC impedance requirements.
• Provides a wide dynamic range.
• A noise detecting circuit prevents inadvertent transmission.
• Operation on an external power supply is available.
• Each mode can be easily controlled.
• A built-in loudspeaker amplifier can operated either on line voltage or an external power supply. 22 0.96±0.25 4.5±0.25 SDIP package with 42 pins (SDIP042-P-0600A) s Block Diagram VL 38 37
  – MA2 Vrl + 40 Vrl + 12 13 18 16
  – + +
  – + .