Hot-selling and scarce TEA1110AT Low voltage versatile telephone transmission circuit with dialler interface SOP14 spot stock

Product Descriptions

The TEA1110A 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.

All statements and values refer to all versions unless otherwise specified.

Product Features

• Low DC line voltage; operates down to 1.6 V (excluding voltage drop over external polarity guard)

• Voltage regulator with adjustable DC voltage

• Provides a supply for external circuits

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

• Asymmetrical high impedance input (32 kΩ) for electret 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.

Product Applications

• Line powered telephone sets, cordless telephones, fax machines, answering machines.

Product Photos

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