TDA7439DS Datasheet, PDF (3/16 Pages) STMicroelectronics – THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7439DS
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. Unit
V_S
I_S
SVR
Supply Voltage
Supply Current
Ripple Rejection
7
9
10.2
V
4
7
10
mA
60
90
dB
INPUT STAGE
RIN
Input Resistance
V_CL
Clipping Level
S_IN
Input Separation
G_inmin
G_inman
G_step
Minimum Input Gain
Maximum Input Gain
Step Resolution
70
100 130 KΩ
THD = 0.3%
2
2.5
Vrms
The selected input is grounded 80
100
dB
through a 2.2µ capacitor
-1
0
1
dB
29
30
31
dB
1.5
2
2.5
dB
VOLUME CONTROL
R_i
Input Resistance
C_RANGE Control Range
A_VMAX
Max. Attenuation
A_STEP
Step Resolution
E_A
Attenuation Set Error
E_T
Tracking Error
V_DC
A_mute
DC Step
Mute Attenuation
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
20
33
50
KΩ
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
BASS CONTROL (1)
Gb
Control Range
B_STEP
Step Resolution
R_B
Internal Feedback Resistance
Max. Boost/cut
+12.0 +14.0 +16.0 dB
1
2
3
dB
33
44
55
KΩ
TREBLE CONTROL (1)
Gt
Control Range
T_STEP
Step Resolution
Max. Boost/cut
+13.0 +14.0 +15.0 dB
1
2
3
dB
MIDDLE CONTROL (1)
Gm
Control Range
M_STEP Step Resolution
R_M
Internal Feedback Resistance
Max. Boost/cut
+12.0 +14.0 +16.0 dB
1
2
3
dB
18.75 25 31.25 KΩ
SPEAKER ATTENUATORS
C_RANGE Control Range
S_STEP
Step Resolution
E_A
Attenuation Set Error
V_DC
Amute
DC Step
Mute Attenuation
A_V = 0 to -20dB
A_V = -20 to -56dB
adjacent attenuation steps
70
76
82
dB
0.5
1
1.5
dB
-1.5
0
1.5
dB
-2
0
2
dB
0
3
mV
80
100
dB
NOTE1:
1) The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device.
2) BASS, MIDDLE and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
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