The 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.
• Internal supply optimum current split-up - low constant current (adjustable) in transmission IC - nearly all line current available for listening-in adjustable supply voltage
• Loudspeaker amplifier dynamic limiter providing low distortion and the highest possible output power SE or BTL drive for loudspeaker volume control by potentiometer and/or logic inputs (e.g. microcontroller drive) fixed gain of 35 dB
• Larsen level limiter low sensitivity for own speech due to 3rd-order filter and attack delay adjustable voltage thresholds
• Power down input
• MUTE input TEA1085/TEA1085A - clickfree s.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | TEA1085 |
NXP |
Line-powered Telephone Listening-in | |
2 | TEA1081 |
NXP |
telephone set peripherals power-down | |
3 | TEA1083 |
NXP |
Call progress monitor | |
4 | TEA1083A |
NXP |
Call progress monitor | |
5 | TEA1088T |
Philips |
SMPS Battery Charger Controller | |
6 | TEA1002 |
Mullard |
PAL Colour Encoder and Video Summer | |
7 | TEA1007 |
TEMIC Semiconductors |
Simple Phase Controller | |
8 | TEA1009 |
ITT |
TV and Radio Receiver | |
9 | TEA1014 |
ST Microelectronics |
VIDEO AND AUDIO SIGNALS SWITCHING | |
10 | TEA1017 |
ETC |
13 BIT SERIES PARALLEL CONVERTER | |
11 | TEA1024 |
TEMIC Semiconductors |
Zero Voltage Switch | |
12 | TEA1039 |
NXP |
switched-mode power-supply |