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TDA7404DTR Datasheet, PDF (11/35 Pages) STMicroelectronics – Car radio signal processor
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TDA7404
Electrical specifications
Table 5.
Symbol
Electrical characteristics (continued)
(VS =9 V; Tamb=25 °C; RL=10 kΩ; all gains = 0 dB; f = 1 kHz; unless otherwise specified)
Parameter
Test conditions
Min. Typ. Max. Unit
Soft-step
TSW Switch time
Bass control
CRANGE Control range
ASTEP Step resolution
fC Center frequency
QBASS Quality factor
DCGAIN Bass DC gain
Treble control
CRANGE Control range
ASTEP Step resolution
fC Center frequency
Speaker attenuator
CRANGE Control range
ASTEP Step resolution
AMUTE Output mute attenuation
EE Attenuation set error
VDC DC steps
TZC Zero cross timer
Vth Zero cross threshold
TSW1
TSW2
TSW3
TSW4
fC1
fC2
fC3
fC4
Q1
Q2
Q3
Q4
DC = off
DC = on
0.68
ms
1.26
ms
2.52
ms
5.04
ms
+14 +15 +16 dB
0.5
1
1.5
dB
54
60
66
Hz
72
80
88
Hz
90 100 110 Hz
180 200 220 Hz
0.9
1
1.1
1.1 1.25 1.4
1.3 1.5 1.7
1.8
2
2.2
-1
0
1
dB
4
4.4
6
dB
+14 +15 +16 dB
0.5
1
1.5
dB
fC1
8
10
12 kHz
fC2
10 12.5 15 kHz
fC3
12
15
18 kHz
fC4
14 17.5 21 kHz
-53
50
-47
dB
Only for attenuation up to 24 dB 0.5
1
1.5
dB
80
90
dB
-2
2
dB
Adjacent attenuation steps
0.10
5
mV
Data bit D1=1, D2=1
29
37
45
ms
+20
mV
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