Philips Manuals (Industrial)

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TEA1096 and TEA1096A are speech and listening-in integrated circuits with features including line interface, interface to peripheral circuits, microphone amplifier, receiving amplifier, and listening-in circuit. They are suitable for line-powered telephone sets with listening-in/line monitoring function.

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This document describes the features and characteristics of the TEA1095 voice switched speakerphone integrated circuit, including external power supply with power-down function, adjustable gain transmit channel, transmit mute function, adjustable gain receive channel, logarithmic volume control, receive mute function, and duplex controller with various adjustable parameters. The TEA1095 is suitable for mains, battery or line-powered telephone sets, cordless telephones, answering machines, fax machines, and hands-free car kits.

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TEA1093 is a bipolar circuit intended for use in line-powered telephone sets. In conjunction with a member of the TEA1060 family or PCA1070 transmission circuits, TEA1093 provides hands-free/listening-in functions for telephone sets. TEA1093 has many adjustable functions, which can be controlled by external circuits. This document provides detailed specifications of TEA1093.

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TEA1094; TEA1094A are bipolar circuits intended for use in mains, battery or line-powered telephone sets, cordless telephones, answering machines and fax machines.

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TEA1085 and TEA1085A are bipolar ICs which have been designed for use in line-powered telephone sets and provide a listening-in facility for the received line signal via a loudspeaker. Nearly all the line current can be used for powering the loudspeaker. The circuits incorporate a supply circuit, loudspeaker amplifier dynamic limiter, MUTE circuit, power-down facility and logic inputs for gain setting.

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The TEA1083/83A is a bipolar IC designed for use in line powered telephone sets. It offers a monitoring facility of the line signal via a loudspeaker during on-hook dialling. The device is intended to be used in conjunction with a transmission circuit of the TEA1060 family.

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TEA1069 is a versatile speech/dialer/ringer with music-on-hold

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The TEA1068 is a bipolar integrated circuit that performs all speech and line interface functions required in fully electronic telephone sets, and performs electronic switching between dialling and speech.

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This is a technical specification of TEA1067, which is a low voltage telephone transmission circuit

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TEA1066T is a bipolar integrated circuit produced by Philips Semiconductors. It can be used for electronic telephone sets to realize all the functions of speech and line interface.

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TEA1065 is a bipolar integrated circuit produced by Philips. It can complete telephone dialing and voice transmission functions, and has functions such as adjustable static resistance, power supply for external circuitry, symmetrical high impedance input, asymmetrical high impedance input, digital pulse input, receiving amplifier, line loss compensation, adjustable gain control, DC line voltage adjustment.

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TEA1064B is a low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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The TEA1064A is a bipolar integrated circuit that performs all the speech and line interface functions required in fully electronic telephone sets. It performs electronic switching between dialling and speech and has a powerful DC supply for peripheral circuits. The IC operates at line voltages down to 1.8 V DC (with reduced performance) to facilitate the use of more telephone sets connected in parallel. The transmit signal on the line is dynamically limited (speech-controlled) to prevent distortion at high transmit levels of both the sending signal and the sidetone.

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This data sheet introduces the functions and features of TEA1062 and TEA1062A, including low DC line voltage, adjustable static resistance, external circuit supply, symmetrical high impedance input, DTMF signal input, mute input, dynamic, magnetic or piezoelectric earpiece receiving amplifier, large gain setting range on microphone and earpiece amplifiers, line loss compensation, gain control curve adaptable to exchange supply, DC line voltage adjustment device.

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The TEA1039 is a bipolar integrated circuit intended for the control of a switched-mode power supply. Together with an external error amplifier and a voltage regulator (e.g. a regulator diode) it forms a complete control system. The circuit is capable of directly driving the SMPS power transistor in small SMPS systems.

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TEA0679T is a dual Dolby B noise reduction circuit with head and equalization amplifiers for use in car radios.

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TEA0678 is a bipolar integrated circuit that provides two channels of Dolby B noise reduction for playback applications in car radios. It includes head and equalization amplifiers with electronically switchable time constants. Furthermore it includes electronically switchable inputs for tape drivers with reverse heads. This device also detects pauses of music in Automatic Music Search (AMS) mode, with a delay time fixed externally by a resistor. The short-circuit proof output stage of the TEA0678 is differential and provides muting. The device will only output a signal when both NR channels are active.

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TEA0677T is a monolithic bipolar integrated circuit intended for applications in car radios. It includes head and equalization amplifiers with electronically switchable time constants. Furthermore it includes electronically switchable inputs for tape drives with reverse heads. The device is intended to replace the regular TEA0675T in low-cost car radios using the same PCB. External components that are necessary for Dolby B and music search features can be omitted.

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