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TEA1118

Features: Low DC line voltage; operates down to 1.6 V (excluding polarity guard) Voltage regulator with adjustable DC voltage Provides a supply for external circuits Symmetrical high impedance transmit inputs (62.5 k) with large signals handling capabilities [up to 1 V (RMSvalue) with less than 2...

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SeekIC No. : 004517263 Detail

TEA1118: Features: Low DC line voltage; operates down to 1.6 V (excluding polarity guard) Voltage regulator with adjustable DC voltage Provides a supply for external circuits Symmetrical high impedance tran...

TEA1118 Data Sheet

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TEA1118
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Product Details

Description



Features:

Low DC line voltage; operates down to 1.6 V (excluding polarity guard)
Voltage regulator with adjustable DC voltage
Provides a supply for external circuits
Symmetrical high impedance transmit inputs (62.5 k) with large signals handling capabilities [up to 1 V (RMS value) with less than 2% THD]
Receive amplifier for dynamic, magnetic or piezoelectric earpieces
AGC line loss compensation for transmit and earpiece amplifiers
DTMF input with confidence tone (TEA1118A only)
MUTE input for pulse or DTMF dialling (TEA1118A only)
Transmit mute function, also enabling the DTMF input (TEA1118A only).


Application

Cordless telephone base stations
Fax machines
Answering machines.


Pinout

Connection Diagram


Specifications

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
VLN positive continuous line voltage   VEE - 0.4 12 V
repetitive line voltage during switch-on or line interruption   VEE - 0.4 13.2 V
Vn(max) maximum voltage on all pins   VEE - 0.4 VCC + 0.4 V
Iline line current RSLPE= 20 W;
see Figs 14 and 15		 - 140 mA
Ptot


 total power dissipation
TEA1118T; TEA1118AT
TEA1118M; TEA1118AM		 Tamb = 75 °C;
see Figs 14 and 15
-
-
384
312
mW
mW
Tstg IC storage temperature   -40 +125 °C
Tamb operating ambient temperature   -25 +75 °C



Description

The TEA1118 and TEA1118A are bipolar integrated circuits that perform all speech and line interface functions required in cordless telephone base stations. The ICs operate at a line voltage down to 1.6 V DC (with reduced performance) to facilitate the use of telephone sets connected in parallel.

The TEA1118A offers in addition to the TEA1118 electronic switching between speech and dialling.Moreover the transmit amplifier can be disabled during speech condition by means of a transmit mute function.All statements and values refer to all versions unless otherwise specified.




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