Product Summary

The TEA1062A/C4/M1,112 is a Low voltage transmission circuit with dialler interface. It performs all speech and line interface functions required in fully electronic telephone sets. The TEA1062A/C4/M1,112 performs electronic switching between dialling and speech. The TEA1062A/C4/M1,112 operates at line voltage down to 1.6 V DC (with reduced performance) to facilitate the use of more telephone sets connected in parallel.

Parametrics

TEA1062A/C4/M1,112 absolute maximum ratings: (1)VLN positive continuous line voltage: 12V; (2)VLN(R) repetitive line voltage during switch-on or line interruption: 13.2V; (3)VLN(RM) repetitive peak line voltage for a 1 ms pulse per 5s: 28V; (4)Iline line current: 140mA; (5)VI input voltage on all other pins: VCC+0.7V; (6)negative input voltage: 0.7V; (7)Ptot total power dissipation: 666mW; (8)Tamb operating ambient temperature: -25 to +75℃; (9)Tstg storage temperature: -40 to +125℃; (10)Tj junction temperature: -125℃.

Features

TEA1062A/C4/M1,112 features: (1)Low DC line voltage; operates down to 1.6 V (excluding polarity guard); (2)Voltage regulator with adjustable static resistance; (3)Provides a supply for external circuits; (4)Symmetrical high-impedance inputs (64 kW) for dynamic, magnetic or piezoelectric microphones; (5)Asymmetrical high-impedance input (32 kW) for electret microphones; (6)DTMF signal input with confidence tone; (7)Mute input for pulse or DTMF dialling; (8)Receiving amplifier for dynamic, magnetic or piezoelectric earpieces; (9)Large gain setting ranges on microphone and earpiece amplifiers; (10)Line loss compensation (line current dependent) for microphone and earpiece amplifiers; (11)Gain control curve adaptable to exchange supply; (12)DC line voltage adjustment facility.

Diagrams

TEA1062A/C4/M1,112 block diagram

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TEA1062A/C4/M1,112
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