TDA7442 Datasheet, PDF (4/17 Pages) STMicroelectronics – TONE CONTROL AND SURROUND DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7442 - TDA7442D
Table 5. Electrical Characteristics (continued)
Refer to the test circuit T_amb = 25°C, V_S = 9V, R_L = 10KΩ, V_in = 1Vrms; R_G = 600Ω, all controls flat (G =
0dB), Effect Ctrl = -6dB, MODE = OFF; f = 1KHz unless otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ.
TREBLE CONTROL
G_t
Control Range
Max. Boost/cut
+13.0 +14.0
T_STEP Step Resolution
1
2
EFFECT CONTROL
C_RANGE Control Range
- 21
S_STEP Step Resolution
0.5
1
SURROUND SOUND MATRIX PHASE
R_PS10 Phase Shifter 1: D1 = 0, D0 = 0
8.3 11.8
R_PS11 Phase Shifter 1: D1 = 0, D0 = 1
10 14.1
R_PS12 Phase Shifter 1: D1 = 1, D0 = 0
12.6 17.9
R_PS13 Phase Shifter 1: D1 = 1, D0 = 1
26.4 37.3
SURROUND SOUND MATRIX
TEST CONDITION (Phase Resistor Selection D0=0, D1=1, D2=0. D3=1, D4=0, D5=1, D6=0, D7=1
G_OFF In-phase Gain (OFF)
Mode OFF, Input signal of
-1
0
1kHz, 1.4 V_p-p, R_in → R_out L_in →
L_out
D_GOFF LR In-phase Gain Difference Mode OFF, Input signal of 1kHz,
-1
0
(OFF)
1.4 V_p-p R_in → R_out, L_in → L_out
G_MUS In-phase Gain (Music)
Music mode, Effect Ctrl = -6dB
7
Input signal of 1kHz, 1.4 V_p-p (R_in
→ R_out), (L_in → L_out)
D_GMUS LR In-phase Gain Difference Music mode, Effect Ctrl = -6dB
0
(Music)
Input signal of 1kHz, 1.4 V_p-p (R_in
→ R_out) - (L_in → L_out)
SPEAKER ATTENUATORS
C_range Control Range
79
S_STEP Step Resolution
-0.5
1
E_A
Attenuation set error
Av = 0 to -20dB
-1.5
0
Av = -20 to -79dB
-3
0
V_DC
DC Steps
adjacent att. steps
-3
0
A_MUTE Output Mute Condition
+70 100
R_VEA Input Impedance
21
30
AUDIO OUTPUTS
N_O(OFF) Output Noise (OFF)
Output Mute, Flat
4
B_W = 20Hz to 20KHz
5
N_O(MUS) Output Noise (Music)
Mode = Music ,
30
B_W = 20Hz to 20KHz,
N_O(PSEUDO) Output Noise (Pseudo Stereo) Mode = Pseudo Stereo
30
B_W = 20Hz to 20KHz,
d
Distorsion
Av = 0 ; V_in = 1Vrms
0.01
S_C
Channel Separation
70
90
V_OCL
Clipping Level
d = 0.3%
2
2.5
R_OUT Output Resistance
10
30
Max.
+15.0
3
-6
1.5
15.2
18.3
23.3
48.85
1
1
1.5
1.5
2
3
39
0.1
50
Unit
dB
dB
dB
dB
KΩ
KΩ
KΩ
KΩ
dB
dB
dB
dB
dB
dB
dB
dB
mV
dB
KΩ
µVrms
µVrms
mVrms
mVrms
%
dB
Vrms
Ω
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