TEA1098ATV PHILIPS [NXP Semiconductors], TEA1098ATV Datasheet - Page 4

• Manufacturer Part Number: TEA1098ATV
• Description: Speech and handsfree IC
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
BLOCK DIAGRAM
2000 Mar 21
handbook, full pagewidth
Speech and handsfree IC
RECO
GARX
EARO
DTMF
RENV
RSEN
GALS
LSAO
HFTX
TSEN
TENV
RNOI
MIC
MIC
TNOI
GND
AGC
DLC
TXI
LN 19 (15)
22 (18)
17 (13)
39 (36)
35 (32)
34 (31)
33 (30)
31 (28)
9 (4)
8 (3)
7 (2)
10 (5)
12 (7)
11 (6)
15 (11)
16 (12)
13 (8)
38 (35)
37 (34)
36 (33)
LINE CURRENT DETECTION
LOW VOLTAGE BEHAVIOUR
tail currents for preamps
ATTENUATOR
DYNAMIC
ENVELOPE AND NOISE
LIMITER
STARTER
AGC
DETECTORS
TX AND RX
20
(16)
REG
COMPARATORS
Fig.1 Block diagram.
BUFFERS
18
(14)
SLPE
R1
AND
4
TEA1098A
SWITCH
SWT STATUS
DUCO LOGIC
CURRENT SOURCES
ATTENUATOR
POWER-DOWN
MANAGEMENT
DECODING
INPUTS
LOGIC
SUPPLY
SWITCH
VOICE
CONTROL
VOLUME
Preliminary specification
TEA1098A
(10) 14
(19) 23
(20) 24
(37) 40
(27) 30
(26) 29
(29) 32
(24) 27
(25) 28
(21) 25
(22) 26
(17) 21
(38) 1
(39) 2
(40) 3 BPC
(41) 4
(42) 5 LVCI
FCA140
(1) 6
V BB
V DD
MICS
PD
HFC
MUTE
GATX
TXO
GNDTX
SWT
IDT
STAB
SWR
EVCI
HFRX
IR