(China (Mainland))
Product Summary
The TEA1118T/C2 is a bipolar integrated circuit that performs 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.
Parametrics
TEA1118T/C2 absolute maximum ratings: (1)Positive continuous line voltage: VEE - 0.4 to 12 V; (2)Repetitive line voltage during switch-on or line interruption: VEE - 0.4 to 13.2 V; (3)Maximum voltage on all pins VEE - 0.4 to VCC + 0.4 V; (4)Line current: 140 mA; (5)Total power dissipation: 384 mW; (6)IC storage temperature: -40 to +125 °C; (7)Operating ambient temperature: -25 to +75 °C.
Features
TEA1118T/C2 features: (1)Low DC line voltage; operates down to 1.6 V (excluding polarity guard); (2)Voltage regulator with adjustable DC voltage; (3)Provides a supply for external circuits; (4)Symmetrical high impedance transmit inputs (62.5 kW)with large signals handling capabilities [up to 1 V (RMS value)with less than 2% THD]; (5)Receive amplifier for dynamic, magnetic or piezoelectric earpieces; (6)AGC line loss compensation for transmit and earpiece amplifiers; (7)DTMF input with confidence tone (TEA1118A only); (8)MUTE input for pulse or DTMF dialling (TEA1118A only); (9)Transmit mute function, also enabling the DTMF input (TEA1118A only).
Diagrams
