TDA7449L_04 Datasheet, PDF (3/14 Pages) STMicroelectronics – LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7449L
Table 5. Electrical Characteristcs (refer to the test circuit T_amb = 25°C, V_S = 9V, R_L= 10KΩ, R_G = 600Ω,
all controls flat (G = 0dB), unless otherwise specified)
Symbol
Parameter
SUPPLY
V_S
Supply Voltage
I_S
Supply Current
SVR
Ripple Rejection
INPUT STAGE
R_IN
Input Resistance
V_CL
Clipping Level
S_IN
Input Separation
G_inmin
Minimum Input Gain
G_inman
Maximum Input Gain
G_step
Step Resolution
VOLUME CONTROL
C_RANGE
Control Range
A_VMAX
Max. Attenuation
A_STEP
Step Resolution
E_A
Attenuation Set Error
E_T
Tracking Error
V_DC
DC Step
A_mute
Mute Attenuation
SPEAKER ATTENUATORS
C_RANGE
Control Range
S_STEP
Step Resolution
E_A
Attenuation Set Error
V_DC
A_mute
DC Step
Mute Attenuation
Test Condition
Min. Typ. Max. Unit
6
9
10.2
V
7
mA
60
90
dB
100
THD = 0.3%
2
2.5
The selected input is grounded 80
100
through a 2.2µ capacitor
-1
0
30
2
KΩ
Vrms
dB
1
dB
dB
dB
A_V = 0 to -24dB
A_V = -24 to -47dB
A_V = 0 to -24dB
A_V = -24 to -47dB
adjacent attenuation steps
from 0dB to A_V max
45
47
49
dB
45
47
49
dB
0.5
1
1.5
dB
-1.0
0
1.0
dB
-1.5
0
1.5
dB
0
1
dB
0
2
dB
0
3
mV
0.5
mV
80
100
dB
A_V = 0 to -20dB
A_V = -20 to -56dB
adjacent attenuation steps
76
dB
0.5
1
1.5
dB
-1.5
0
1.5
dB
-2
0
2
dB
0
3
mV
80
100
dB
3/14