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TDA7330SSSN/a60avaiSINGLE CHIP RDS DEMODULATOR + FILTER
TDA7330BD013TRSTMN/a10000avaiSINGLE CHIP RDS DEMODULATOR + FILTER
TDA7330BD013TRST,STN/a10000avaiSINGLE CHIP RDS DEMODULATOR + FILTER


TDA7330BD013TR ,SINGLE CHIP RDS DEMODULATOR + FILTERELECTRICAL CHARACTERISTICS (VCC = 5V, Tamb = 25°C; Rg = 600Ω; fosc = 4.332MHz;V = 20mVrms unless ot ..
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TDA7330-TDA7330BD013TR
SINGLE CHIP RDS DEMODULATOR + FILTER
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-
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.
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS
THERMAL DATA
PIN CONNECTION (Top view)
PIN FUNCTION
TDA7330B
ELECTRICAL CHARACTERISTICS (VCC = 5V, Tamb = 25°C; Rg = 600Ω; fosc = 4.332MHz;
VIN = 20mVrms unless otherwise specified)
SUPPLY
FILTER(measured an pin 4 FILOUT)
CROSS DETECTOR
OSCILLATOR
(*) FSEL pin has an internal 40KΩ pull down resistor A 4.332MHz QUARTZ must be used (**) A 8.664MHz QUARTZ must be used.
DEMODULATOR
Note(1):

The phase non linearity is defined as: ΔPh = | -2 φf2 + φf1 + φf3 |
where φfx is the input-output phase difference at the frequency fx (x = 1,2,3)
TDA7330B

3/9
OUTPUT TIMING
The generated 1187.5Hz output clock (RDCL
line) is synchronized to the incoming data.
According to the internal PLL lock condition this
data change can results on the falling or on the
rising clock edge.
Whichever clock edge is used by the decoder (ris-
ing or falling edge) the data will remain valid for
416.7 μsec after the clock transition.
Figure 2: RDS timing diagram
Figure 3: Test Circuit
Note(2): The 3th harmonic (57KHz) must be less than -40dB in respect to the input signal 19KHz plus gain.
ELECTRICAL CHARACTERISTICS (continued)
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)
TDA7330B

5/9
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