TDA7406T Datasheet, PDF (21/49 Pages) STMicroelectronics – CAR RADIO SIGNAL PROCESSOR

TDA7406T
Table 2. ELECTRICAL CHARACTERISTICS (continued)
V_S = 9V, de-emphasis time constant = 50µs, MPX input voltage V_MPX = 500mV (75kHz deviation),
modulation frequency = 1kHz, input gain = 6dB, T_amb = 27°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Unit
τ_DeempF
M
De-emphasis Time constants FM
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
25
50
75
µs
44
62.5
80
µs
V_LEVEL >> V_HCH
50
75
100
µs
V_LEVEL >> V_HCH
70
100 130
µs
M_FM Highcut Time constant Multiplier FM V_LEVEL << V_HCL
3
τ_DeempA
M
De-emphasis Time constants AM
V_LEVEL >> V_HCH
V_LEVEL >> V_HCH
37.5
µs
47
µs
V_LEVEL >> V_HCH
56
µs
V_LEVEL >> V_HCH
75
µs
M_AM High cut Time constant Multiplier V_LEVEL << V_HCL
3.7
AM
REF5V Internal Reference Voltage
4.7
5
5.3
V
L_min min. LEVEL Gain
-1
0
+1
dB
L_maxs max. LEVEL Gain
5
6
7
dB
L_Gstep LEVEL Gain Step Resolution
see section 2.7
0.2
0.4
0.6
dB
VSBL_min Min. Voltage for Mono
see section 2.8
17
20
23 %REF5V
VSBL_max Max. Voltage for Mono
see section 2.8
62
70
78 %REF5V
VSBL_step Step Resolution
see section 2.8
1.6
3.3
5.0 %REF5V
VHCH_min Min. Voltage for NO Highcut
see section 2.9
77
42
47 %REF5V
VHCH_max Max. Voltage for NO Highcut
see section 2.9
58
66
74 %REF5V
VHCH_step Step Resolution
see section 2.9
4.2
8.4 12.6 %REF5V
VHCL_min Min. Voltage for FULL High cut see section 2.9
15
17
19
%VHCH
VHCL_max Max. Voltage for FULL High cut see section 2.9
29
33
37
%VHCH
VHCL_step Step Resolution
see section 2.9
2.1
4.2
6.3 %REF5V
Carrier and harmonic suppression at the output
α19 Pilot Signalf=19kHz
40
50
dB
α38 Subcarrier f=38kHz
75
dB
α57 Subcarrier f=57kHz
62
dB
α76 Subcarrier f=76kHz
90
dB
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