TDA7449L Datasheet, PDF (3/13 Pages) STMicroelectronics – LOW COST DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7449L
ELECTRICAL CHARACTERISTICS (refer to the test circuit T_amb = 25°C, V_S = 9V, R_L= 10KΩ,
RG = 600Ω, all controls flat (G = 0dB), unless otherwise specified)
Symbol
SUPPLY
Parameter
Test Condition
Min. Typ. Max.
V_S
I_S
SVR
Supply Voltage
Supply Current
Ripple Rejection
INPUT STAGE
R_IN
Input Resistance
V_CL
Clipping Level
S_IN
Input Separation
Ginmin
G_inman
G_step
Minimum Input Gain
Maximum Input Gain
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
S_STEP
Control Range
Step Resolution
E_A
Attenuation Set Error
V_DC
A_mute
DC Step
Mute Attenuation
AUDIO OUTPUTS
VCLIP
Clipping Level
R_L
Output Load Resistance
RO
Output Impedance
VDC
DC Voltage Level
GENERAL
E_NO
Output Noise
E_t
Total Tracking Error
S/N
Signal to Noise Ratio
S_C
Channel Separation Left/Right
d
Distortion
BUS IN-
PUT
6
60
THD = 0.3%
2
The selected input is grounded 80
through a 2.2µ capacitor
-1
45
45
0.5
A_V = 0 to -24dB
-1.0
A_V = -24 to -47dB
-1.5
A_V = 0 to -24dB
A_V = -24 to -47dB
adjacent attenuation steps
from 0dB to A_V max
80
0.5
A_V = 0 to -20dB
-1.5
A_V = -20 to -56dB
-2
adjacent attenuation steps
80
d = 0.3%
2.1
2
10
All gains = 0dB;
BW = 20Hz to 20KHz flat
A_V = 0 to -24dB
A_V = -24 to -47dB
All gains 0dB; VO = 1VRMS ;
80
AV = 0; VI = 1VRMS ;
9
10.2
7
90
100
2.5
100
0
1
30
2
47
49
47
49
1
1.5
0
1.0
0
1.5
0
1
0
2
0
3
0.5
100
76
1
1.5
0
1.5
0
2
0
3
100
2.6
40
70
3.8
5
15
0
1
0
2
106
100
0.01 0.08
Unit
V
mA
dB
KΩ
Vrms
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mV
mV
dB
dB
dB
dB
dB
mV
dB
VRMS
KΩ
Ω
V
µV
dB
dB
dB
dB
%
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