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PDF TDA7730B Data sheet ( Hoja de datos )
| Número de pieza | TDA7730B | |
| Descripción | SINGLE CHIP RDS DEMODULATOR + FILTER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TDA7730B (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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® TDA7330B
SINGLE CHIP RDS DEMODULATOR + FILTER
HIGH PERFORMANCE, 57KHz BANDPASS
FILTER (8th ORDER)
FILTER ADJUSTMENT FREE AND WITHOUT
EXTERNAL COMPONENTS
PURELY DIGITAL RDS DEMODULATION
WITHOUT EXTERNAL COMPONENTS
ARI (SK INDICATION) AND RDS SIGNAL
QUALITY OUTPUT
4.332MHz CRYSTAL OSCILLATOR
(8.664MHz OPTIONAL)
LOW NOISE MIXED BIPOLAR/CMOS TECH-
NOLOGY
DESCRIPTION
The TDA7330B is a RDS demodulator. It recov-
ers the additional inaudible RDS information
which is transmitted by FM radio broadcasting
stations.
The output data signal (RDDA) and clock signal
(RDCL) can be further processed by a suitable
RDS decoder (microprocessor).
The device operates in accordance with the EBU
(European Broadcasting Union) specifications.
The IC includes a 2nd order antialiasing input fil-
BLOCK DIAGRAM
DIP20
SO20
ORDERING NUMBERS:
TDA7330B
TDA7330BD
ter, a 57KHz switched capacitor band pass filter,
a smoothing filter and cross detector, a bit rate
clock recovery circuit, a 57KHz PLL, BI-PHASE
PSK decoder, differential decoding circuit, ARI in-
dication and RDS signal quality output.
November 1999
1/9
1 page  
TDA7330B
APPLICATION SUGGESTION
A good DC decoupling between VCC and
GROUND is necessary: a 100nF ceramic ca-
pacitor, with low resistance and low inductance
at high frequency, directly connected on pin 16
(VCC)and 5 (GND) is recommended.
A small series inductance (100µH) or resistor
(27Ω) may be used for supply line filtering.
The Layout path pin2 - C2 - pin5 must be as
short as possible.
If the supply line, after the power on has a soft
and disturbed (spikes) slope, a capacitor of
100nF, between POR and VCC, is racom-
mended.
The various testing pins have no sense for the
customer.
Figure 4: P.C. board and component layout of fig. 3 (1:1 scale)
5/9
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TDA7730B.PDF ] | |
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