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TEA7089 fiches techniques PDF

ST Microelectronics - LOW-RANGE PHONE DEDICATED CHIP

Numéro de référence TEA7089
Description LOW-RANGE PHONE DEDICATED CHIP
Fabricant ST Microelectronics 
Logo ST Microelectronics 





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TEA7089 fiche technique
TEA7089A
LOW-RANGE PHONE DEDICATED CHIP
. RING
- GENERATION OF 8 MELODY TONES
(Including the 3 German Melody Tones)
. - 4 STEPS DIGITAL CONTROL ON THE AM-
PLIFIER OUTPUT LEVEL
SPEECH
- TRANSMIT GAINEXTERNALLY ADJUSTABLE
- RECEIVINGGAINEXTERNALLYADJUSTABLE
- AGCSLOPEEXTERNALLYPROGRAMMABLE
- SOFTCLIPPING ON SENDING CHANNEL
- RECEIVE AMPLIFIER FOR PIEZO OR
ELECTRODYNAMIC TRANSDUCER
. - +6dB MODE ON RECEIVE CHANNEL
- LINE POWER MANAGEMENT
DIALING
- DTMF GENERATOR
- LOW DC MASK DURING MAKE PERIOD
. THROUGH MICROCONTROLLER SERIAL
BUS INTERFACE
MICROCONTROLLER INTERFACE
- 1.79MHz CLOCK OR 3.58MHz OSCILLATOR
INPUT
. MICROCONTROLLER POWER SUPPLY
. MICROCONTROLLER CONTROL INTER-
FACE INCLUDING SERIAL BUS
. LINE CURRENT EXTRACTOR FOR SUPPLY
OF EXTERNAL PERIPHERALS
SO28
(Plastic Package)
ORDER CODE : TEA7089AFP
PIN CONNECTIONS
S OFT
RECIN
SN
AGC
1
2
3
4
28 DTMF
27 VREF
26 VRMC
25 DCL
MIC1
5
24 DATA
MIC2
6
23 MSK
GTR
7
22 OSC
DESCRIPTION
The TEA7089A is a Telephone Analog Front End
device, TAFE, which integrates the three basic
functions of a standard telephone set :
- Speech network,
- DTMF generator,
- Ringer generator on buzzer.
A complete telephone set can be designed using
TEA7089A associated with a low cost microcon-
troller.
VCC
GND
IVLS
VS
VL
VMC
GREC
8
9
10
11
12
13
14
21 RI
20 PON
19 RES
18 VRING
17 BUZ
16 EAR+
15 EAR-
June 1998
1/17

PagesPages 17
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