TDA7402 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA7402' PDF : 69 Pages View PDF
Stereo decoder part
TDA7402
Table 7.
Symbol
Stereo decoder electrical characteristics (continued)
Parameter
Test condition
Min. Typ. Max. Unit
De-emphasis and highcut
VLEVEL >> VHCH
25
50
75
µs
τDeempFM De-emphasis time constants FM
VLEVEL >> VHCH
VLEVEL >> VHCH
44 62.5 80
µs
50
75
100
µs
VLEVEL >> VHCH
70
100 130
µs
MFM Highcut time constant multiplier FM VLEVEL << VHCL
3
t(s) τDeempAM De-emphasis time constants AM
duc MAM Highcut time constant multiplier AM
ro REF5V Internal reference voltage
VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL >> VHCH
VLEVEL << VHCL
P Lmin
lete Lmaxs
o LGstep
min. LEVEL gain
max. LEVEL gain
LEVEL gain step resolution
see section 2.7
bs VSBLmin Min. voltage for mono
see section 2.8
) - O VSBLmax Max. voltage for mono
see section 2.8
ct(s VSBLstep Step resolution
see section 2.8
rodu VHCHmin Min. voltage for NO highcut
see section 2.9
P VHCHmax Max. voltage for NO highcut
see section 2.9
lete VHCHstep Step resolution
bso VHCLmin Min. voltage for FULL high cut
OVHCLmax Max. voltage for FULL high cut
see section 2.9
see section 2.9
see section 2.9
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
VHCLstep Step resolution
see section 2.9
2.1
4.2
6.3
%REF
5V
Carrier and harmonic suppression at the output
α19 Pilot signal f=19kHz
α38 Subcarrier f=38kHz
α57 Subcarrier f=57kHz
α76 Subcarrier f=76kHz
40
50
dB
75
dB
62
dB
90
dB
32/69
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