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TDA9873H Datasheet PDF : 40 Pages
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Philips Semiconductors
Multistandard dual carrier stereo sound decoder
Product specification
TDA9873H
QUICK REFERENCE DATA
VCC = 5 V; Tamb = 25 °C; B/G standard (fSC1 = 5.5 MHz, fSC2 = 5.742 MHz, SC1/SC2 = 7 dB, ∆fAF = 27 kHz,
fmod = 1 kHz, L = R, stereo mode); input level for first sound carrier Vi(FM)(rms) = 50 mV; fref = 4.000 MHz; measured in
application circuits of Figs 7 and 8; unless otherwise specified.
SYMBOL
VCC
ICC
Vo(rms)
Vo(cl)(rms)
fi(FM)
S/NW
tident(on)
Vi(FM)(rms)
αcs(AF)(stereo)
αct(AF)(dual)
PARAMETER
supply voltage
supply current
AF output level (RMS value)
AF output clipping level
(RMS value)
FM-PLL operating frequencies
(switchable)
weighted signal-to-noise ratio
(complete signal path)
total identification time on for
identification mode change
FM-PLL input voltage (RMS value)
AF channel separation (stereo
mode; complete signal path)
AF crosstalk attenuation (dual
mode; complete signal path)
CONDITIONS
54% modulation; note 1
THD < 1.5%
first sound carrier
M standard
B/G standard
I standard
D/K standard
second sound carrier
M standard
B/G standard
D/K (1) standard
D/K (2) standard
D/K (3) standard
CCIR 468-4 weighted; quasi
peak; dual mode;
B/G standard; note 1
normal mode; note 2
fast mode; note 2
sensitivity for pull-in
first sound carrier
second sound carrier
B/G standard; note 3
without alignment
I2C-bus alignment
MIN.
4.5
40
400
1 400
−
−
−
−
−
−
−
−
−
52
0.35
0.1
−
−
25
40
65
TYP.
5
60
500
−
4.5
5.5
6.0
6.5
4.72
5.74
6.26
6.74
5.74
56
−
−
−
−
30
45
70
MAX.
6.6
75
600
−
UNIT
V
mA
mV
mV
−
MHz
−
MHz
−
MHz
−
MHz
−
MHz
−
MHz
−
MHz
−
MHz
−
MHz
−
dB
2
s
0.5 s
6
mV
1
mV
−
dB
−
dB
−
dB
Notes
1. Condition for B/G, I and D/K standard: VCC = 5 V and ∆f = 27 kHz (m = 54%). Condition for M standard: VCC = 5 V
and ∆f = 13.5 kHz; 6 dB gain added internally to compensate smaller deviation.
2. The maximum total system identification time ‘on’ for a channel change is equal to maximum value of tident(on) plus
tI2C(read-out). The maximum total system identification time ‘off’ for a channel change is equal to maximum value of
tident(off) plus tI2C(read-out). The fast mode is proposed mainly during search tuning, program or channel select. If the
channel is selected, the identification response should be switched to normal mode for improved reliability. However
due to the transition from fast to normal mode, the identification bits are not valid for one integrator period. Therefore
the transmitter mode detected during the fast mode has to be stored before changing to normal mode. The storage
has to be kept for two seconds (maximum value of tident(on) in the normal mode) from the moment of transition.
The identification can now operate in the normal mode until the next tuning action.
3. R modulated and L monitored.
2000 Apr 04
3
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