Philips manuals, page 63
PHILIPS TEA1085; TEA1085A Listening-in circuit for line-powered telephone sets handbook
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.
PHILIPS TEA1083; TEA1083A Call progress monitor for line powered telephone sets handbook
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.
PHILIPS TEA1081 Supply circuit with power-down for telephone set peripherals handbook
PHILIPS TEA1069; TEA1069A Versatile speech/dialler/ringer with music-on-hold handbook
TEA1069 is a versatile speech/dialer/ringer with music-on-hold
PHILIPS TEA1068 Versatile telephone transmission circuit with dialler interface handbook
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.
PHILIPS TEA1067 Low voltage versatile telephone transmission circuit with dialler interface handbook
This is a technical specification of TEA1067, which is a low voltage telephone transmission circuit
PHILIPS TEA1066T Versatile telephone transmission circuit with dialler interface handbook
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.
PHILIPS TEA1065 Versatile telephone transmission circuit with dialler interface handbook
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.
PHILIPS TEA1064B Low voltage versatile telephone transmission circuit with dialler interface transmit level dynamic limiting handbook
TEA1064B is a low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting
PHILIPS TEA1064A Low voltage versatile telephone transmission circuit with dialler interface transmit level dynamic limiting handbook
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.
PHILIPS TEA1062; TEA1062A Low voltage transmission circuits with dialler interface handbook
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.
PHILIPS TEA1039 Control circuit for switched-mode power supply handbook
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.
PHILIPS TEA0679T I 2 C-bus controlled dual Dolby* B-type noise reduction circuit for playback applications handbook
TEA0679T is a dual Dolby B noise reduction circuit with head and equalization amplifiers for use in car radios.
PHILIPS TEA0678 Dual Dolby* B-type noise reduction circuit automatic music search with differential outputs mute handbook
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.
PHILIPS TEA0677T handbook
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.