TEA1110AL-D14-T Datasheet PDF - UTC

DESCRIPTION

●The UTC TEA1110Ais a versatile telephone transmission circuit providing full speech and line interface functions in electronic telephone sets. This device works at a line voltage which can be as low as 1.6V DC (with reduced  performance) to enable parallel connection of telephone sets. It also realizes electronic switching between speeches and dialling.

●FEATURES

● Low DC line voltage; operates downto 1.6V (excluding voltage drop over external polarity guard)

● Voltage regulator with adjustable DC voltage

● Provides a supply for external circuits

● Symmetrical high impedance inputs (64kΩ) for dynamic, magnetic or piezo-electric microphones

● Asymmetrical high impedance input (32kΩ) for electric microphones

● DTMF input with confidence tone

● MUTE input for pulse or DTMF dialling

● Receiving amplifier for dynamic, magnetic or piezo-electric earpieces

● AGC line loss compensation for microphone and earpiece amplifiers.