TEA1113

The TEA1113 is a bipolar integrated circuit that performs all speech and line interface functions required in fully electronic telephone sets. It performs electronic switching between speech and dialling. The IC operates at a line voltage down to 1.6 V DC (with reduced performance) to facilitate the use of telephone sets connected in parallel.

A current (proportional to the line current and internally limited to 19.5 mA) is available to drive an LED which indicates the on-hook/off-hook status.The transmit signal on the line is dynamically limited to prevent distortion at high transmit levels for both the sending line and sidetone signals. The microphone amplifier can be disabled during speech condition by means of a microphone mute function.All statements and values refer to all versions unless otherwise specified.