TDA7440D Datasheet, PDF (3/17 Pages) STMicroelectronics – TONE CONTROL DIGITALLY CONTROLLED AUDIO PROCESSOR

TDA7440D
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
Test Condition
Min. Typ. Max.
SUPPLY
V_S Supply Voltage
6
9
10.2
I_S
Supply Current
4
7
10
SVR Ripple Rejection
60
90
INPUT STAGE
R_IN Input Resistance
70
100 130
V_CL Clipping Level
THD = 0.3%
2
2.5
S_IN Input Separation
The selected input is grounded
through a 2.2µ capacitor
80
100
G_inmin Minimum Input Gain
-1
0
1
G_inman Maximum Input Gain
29
30
31
G_step Step Resolution
1.5
2
2.5
VOLUME CONTROL
R_i Input Resistance
20
33
50
C_RANGE Control Range
45
47
49
A_VMAX Max. Attenuation
45
47
49
A_STEP Step Resolution
0.5
1
1.5
E_A Attenuation Set Error
A_V = 0 to -24dB
-1.0
0
1.0
A_V = -24 to -47dB
-1.5
0
1.5
E_T Tracking Error
A_V = 0 to -24dB
0
1
A_V = -24 to -47dB
0
2
V_DC DC Step
adjacent attenuation steps from
0dB to A_V max
0
3
0.5
A_mute Mute Attenuation
80
100
BASS CONTROL (1)
Gb Control Range
Max. Boost/cut
+12.0 +14.0 +16.0
B_STEP Step Resolution
1
2
3
R_B Internal Feedback Resistance
33
44
55
TREBLE CONTROL (1)
Gt Control Range
Max. Boost/cut
+13.0 +14.0 +15.0
T_STEP Step Resolution
1
2
3
SPEAKER ATTENUATORS
C_RANGE Control Range
70
76
82
S_STEP Step Resolution
0.5
1
1.5
E_A Attenuation Set Error
A_V = 0 to -20dB
-1.5
0
1.5
A_V = -20 to -56dB
-2
0
2
V_DC DC Step
adjacent attenuation steps
0
3
A_mute Mute Attenuation
80
100
NOTE1:
1) The device is functionally good at Vs = 5V. a step down, on Vs, to 4V does’t reset the device.
2) BASS and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
Unit
V
mA
dB
KΩ
Vrms
dB
dB
dB
dB
KΩ
dB
dB
dB
dB
dB
dB
dB
mV
mV
dB
dB
dB
KΩ
dB
dB
dB
dB
dB
dB
mV
dB
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