INTRODUCTION
The KA8601C is a monolithic integrated circuit for use in high performance speaker phone system.
The KA860lC consists of speaker phone and speech network. Speaker phone includes attenuators, amplifiers, level detectors, attenuator control, hybrid amplifiers, regulator and AGC circuit. Speech network includes transmit amp, receive amp, voltage regulator for dialer, side tone control, and line equalizer.

FEATURES
• Speaker Phone
    - Low Operating Voltage (3.0 ~ 6.5V)
    - High Attenuator Gain Range (52dB)
    - Improved Sensitivity (Four-point Signal Sensing)
    - Chip Disable for Active or Standby Operation
    - Microphone Amp Gain set by External Components
• Speech Network
    - Low Operating Voltage (1.5V : speech)
    - Regulated Voltage for Dialer (Typically 3.3V)
    - Transmit, Receive, Side Tone Gains set by External Components
    - Mute Input for DTMF Dialing