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PDF TDA7331 Data sheet ( Hoja de datos )
| Número de pieza | TDA7331 | |
| Descripción | SINGLE CHIP RDS DEMODULATOR+ FILTER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA7331 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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® TDA7331
SINGLE CHIP RDS DEMODULATOR + FILTER
VERY HIGH RDS DEMODULATION QUALITY
WITH IMPROVED DIGITAL SIGNAL PROC-
ESSING
HIGH PERFORMANCE, 57KHz BANDPASS
FILTER (8th ORDER)
PURELY DIGITAL RDS DEMODULATION
WITHOUT EXTERNAL COMPONENTS
ARI INDICATION AND RDS SIGNAL QUAL-
ITY OUTPUTS
4.332MHz CRYSTAL OSCILLATOR
(8.664 and 17.328MHz SELECTABLE OP-
t(s)TIONS)
LOW NOISE CMOS TECHNOLOGY
cLOW RADIATION
DIP20
SO20
ORDERING NUMBERS:
TDA7331
TDA7331D
roduDESCRIPTION
PThe TDA7331, an improved version of
TDA7330B, recovers the additional inaudible
teRDS information which is transmitted by FM radio
lebroadcasting stations and operates in accord-
oance with the EBU (European Broadcasting Un-
sion) specifications.
bThe device is made up of two sections: a cas-
- OBLOCK DIAGRAM and TEST CIRCUIT
caded antialiasing + switched capacitors band-
pass filter for precise RDS band selection and a
demodulating section that performs the extraction
od RDS data stream (RDDA) and clock (RDCL),
to be furher processed by a suitable RDS de-
coder.
Outputs for RDS signal quality and ARI indication
are also present.
t(s) C1 27pF 4.332MHz C2 47pF
roducMPX
270pF
1
lete P4
o FILOUT
bs 16
O VS
2nd ORDER
ANTIALIASING
FILTER
8th ORDER
SC-BANDPASS
FILTER
T57
11
OSCIN
10
OSCOUT
9
OSCILLATOR &
DIVIDER
57KHz PLL
FAST ARI
INDICATOR
1187.5Hz
PLL
QUAL DET.
3
OSEL
18
FSEL
12
RDCL
15
ARI
14
QUAL
100nF
10µF
VREF 2
-
+
POLARITY
BIPHASE DEC.
0
MUX
1
13
DIFF. DECODER
RDDA
INTEGRAL
BIPHASE DEC.
TEST LOGIC
19
TM
5
GND
6,7,8,17
N.C.
20
EXTRES
D97AU686B
September 2003
1/7
1 page  
TDA7331
DIM.
MIN.
mm
TYP. MAX. MIN.
inch
TYP. MAX.
OUTLINE AND
MECHANICAL DATA
a1 0.254
0.010
B 1.39
1.65 0.055
0.065
b 0.45
0.018
b1 0.25
0.010
D 25.4 1.000
E 8.5
0.335
e 2.54
0.100
)e3 22.86
0.900
t(sF 7.1 0.280
ucI 3.93 0.155
rodL 3.3
0.130
Obsolete Product(s) - Obsolete PZ 1.34 0.053
DIP20
5/7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet TDA7331.PDF ] | |
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| TDA7330B | SINGLE CHIP RDS DEMODULATOR FILTER | ST Microelectronics |
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| TDA7333 | RDS/RBDS PROCESSOR |  STMicroelectronics |
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