TDA7703 Datasheet, PDF (25/32 Pages) STMicroelectronics – Automatic self alignment for image rejection

TDA7703
Weak signal processing
5.1.3 Adjacent channel mute
Table 21. Adjacent channel mute
(continuous set)
Symbol
Parameter
ACMd Depth
Test condition
Min
Typ
Max Units
SMd
0
0
dB
5.1.4 Stereo blend
Table 22. Stereo blend
(continuous set)
Symbol
Parameter
Test condition
Min
Typ
Max Units
MaxSep
Maximum stereo separation
field strength = 80 dBµV, pilot
deviation = 6.75 kHz
0
40
50
dB
separation = MaxSep - 1 dB
SBFSsp Start point vs. field strength
20
50
60 dBµV
no multipath present
SBFSep End point vs. field strength
separation = 1 dB
no multipath present
20
30
60 dBµV
Field strength-related
SBFStM2S transition time from mono to
stereo
V_rf step-like variation from
20 dBµV to 80 dBµV
0.001
3
20
s
Field strength-related
SBFStS2M transition time from stereo to
mono
V_rf step-like variation from
80 dBµV to 20 dBµV
0.001 0.5
20
s
SBMPsp Start point vs. multipath
separation = MaxSep - 1 dB
equivalent 19 kHz AM
modulation depth;
5
field strength = 80 dBµV
10
80
%
SBMPep End point vs. multipath
separation = 1 dB
equivalent 19 kHz AM
modulation depth;
field strength = 80 dBµV
5
30
80
%
SBMPtM2S
Multipath -related transition
time from mono to stereo
V_rf step-like variation from
20 dBµV to 80 dBµV
0.001
1
20
s
SBMPtS2M
Multipath -related transition
time from stereo to mono
V_rf step-like variation from
80 dBµV to 20 dBµV
0.001 0.001 20
s
Threshold on pilot tone
Pil ThrM2S Pilot detector stereo threshold deviation for mono-stereo
transition
0.8
2.74
7
kHz
Pil ThrHyst
Pilot detector threshold
hysteresis
Difference in pil. det.
deviation threshold for stereo
to mono transition compared
-
0.01
-
kHz
to PilThrM2S
Rev 1
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