Product Summary

The TEA1110AT is a bipolar integrated circuit that performs all speech and line interface functions required in fully electronic telephone sets. TEA1110AT 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.

Parametrics

TEA1110AT absolute maximum ratings: (1)VLN positive continuous line voltage: VEE - 0.4 to 12 V; repetitive line voltage during switch-on or line interruption:; (2)VEE - 0.4 to 13.2 V; (3)Vn(max) maximum voltage on all pins: VEE - 0.4 to VCC + 0.4V; (4)Iline line current RSLPE= 20 Ω; see Figs 10 and 11: 140 mA; (5)Ptot total power dissipation Tamb = 75 ℃; TEA1110AT: 384 mW; (6)Tstg storage temperature: -40 +125 ℃; (7)Tamb operating ambient temperature: -25 to +75 ℃.

Features

TEA1110AT features: (1)Low DC line voltage; operates down to 1.6 V (excluding voltage drop over external polarity guard); (2)Voltage regulator with adjustable DC voltage; (3)Provides a supply for external circuits; (4)Symmetrical high impedance inputs (64 kW) for dynamic, magnetic or piezo-electric microphones; (5)Asymmetrical high impedance input (32 kW) for electret microphones; (6)DTMF input with confidence tone; (7)MUTE input for pulse or DTMF dialling; (8)Receiving amplifier for dynamic, magnetic or piezo-electric earpieces; (9)AGC line loss compensation for microphone and earpiece amplifiers.

Diagrams

TEA1110AT Block diagram

TEA1007
TEA1007

Other


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