TEA1098AH 데이터 시트보기 (PDF) - Philips Electronics
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TEA1098AH Datasheet PDF : 40 Pages
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Philips Semiconductors
Speech and handsfree IC
Preliminary specification
TEA1098A
BLOCK DIAGRAM
handbook, full pagewidth
LN 19 (15)
STARTER
REG SLPE
20 18
(16) (14)
R1
LINE CURRENT DETECTION
LOW VOLTAGE BEHAVIOUR
AGC 22 (18)
AGC
GND 17 (13)
tail currents for preamps
HFTX 39 (36)
DTMF 35 (32)
MIC+ 34 (31)
MIC− 33 (30)
ATTENUATOR
SWITCH
TEA1098A
TXI 31 (28)
TSEN 9 (4)
TENV 8 (3)
TNOI 7 (2)
RNOI 10 (5)
RENV 12 (7)
RSEN 11 (6)
TX AND RX
ENVELOPE AND NOISE
DETECTORS
BUFFERS
AND
COMPARATORS
DUCO LOGIC
SWT STATUS
GALS 15 (11)
LSAO 16 (12)
DLC 13 (8)
RECO 38 (35)
GARX 37 (34)
EARO 36 (33)
DYNAMIC
LIMITER
(10) 14 VBB
SUPPLY
MANAGEMENT
(19) 23 VDD
(20) 24 MICS
POWER-DOWN
CURRENT SOURCES
(38) 1 PD
LOGIC
INPUTS
DECODING
(37) 40 HFC
(39) 2 MUTE
(40) 3 BPC
VOICE
SWITCH
(27) 30 GATX
(26) 29 TXO
(29) 32 GNDTX
(24) 27 SWT
(25) 28 IDT
(21) 25 STAB
(22) 26 SWR
VOLUME
CONTROL
(41) 4 EVCI
(42) 5 LVCI
(1) 6 HFRX
ATTENUATOR
(17) 21 IR
2000 Mar 21
Fig.1 Block diagram.
4
FCA140
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