TDA7402_07 Datasheet, PDF (33/71 Pages) STMicroelectronics – Car radio signal processor

TDA7402
Stereo decoder part
Table 7.
Symbol
Electrical characteristics (continued)
Parameter
Test condition
De-emphasis and highcut
τ_DeempFM De-emphasis timeconstants FM
M_FM Highcut timeconstant multiplier FM
τ_DeempAM De-emphasis timeconstants AM
M_AM
REF5V
L_min
L_maxs
L_Gstep
Highcut timeconstant multiplier AM
Internal reference voltage
min. LEVEL gain
max. LEVEL gain
LEVEL gain step resolution
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL << V_HCL
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
V_LEVEL << V_HCL
see section 2.7
VSBL_min Min. voltage for mono
see section 2.8
VSBL_max Max. voltage for mono
see section 2.8
VSBL_step Step resolution
see section 2.8
VHCH_min Min. voltage for NO highcut
see section 2.9
VHCH_max Max. voltage for NO highcut
see section 2.9
VHCH_step Step resolution
VHCL_min Min. voltage for FULL high cut
VHCL_max Max. voltage for FULL high cut
VHCL_step Step resolution
see section 2.9
see section 2.9
see section 2.9
see section 2.9
Carrier and harmonic suppression at the output
α19 Pilot signal f=19kHz
α38 Subcarrier f=38kHz
α57 Subcarrier f=57kHz
α76 _{Subcarrier f=76kHz}
Min. Typ. Max. Unit
25
50
75
µs
44 62.5 80
µs
50
75
100
µs
70
100 130
µs
3
37.5
µs
47
µs
56
µs
75
µs
3.7
4.7
5
5.3
V
-1
0
1
dB
5
6
7
dB
0.2
0.4
0.6
dB
17
20
23
%REF
5V
62
70
78
%REF
5V
1.6
3.3
5.0
%REF
5V
37
42
47
%REF
5V
58
66
74
%REF
5V
4.2
8.4
12.6
%REF
5V
15
17
19
%VHCH
29
33
37
%VHCH
2.1
4.2
6.3
%REF
5V
40
50
dB
75
dB
62
dB
90
dB
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