The UTC TEA1062N/TEA1062AN is a bipolar integrated circuit performing all speech and line interface function, required in the fully electronic telephone sets. It performs electronic switching
●between dialing speech. The circuit is able to operate down to D.C. line voltage of 1.6V (with reduced performance) to facilitate the use of more telephone sets in parallel.
●FEATURES
● Low d.c. line voltage; operates down to 1.6V (excluding polarity guard).
● Voltage regulator with adjustment static resistance.
● Provides supply with limited current for external circuitry.
● Symmetrical high-impedance inputs (64kΩ) for dynamic, magnetic or piezoelectric microphones.
● Asymmetrical high-impedance inputs (32kΩ) for electrets microphones.
● DTMF signal input with confidence tone.
● Mute input for pulse or DTMF dialing.
● Receivering amplifier for several types of earphones.
● Large amplification setting range on microphone and earpiece amplifiers.
● Line loss compensation facility, line current depedant (microphone and earpiece amplifiers).
● Gain control adaptable to exchange supply.
● Possibility to adjust the d.c. line voltage
