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
SUPPLY
V
S
I
S
SVR
R
IN
V
CL
S
IN
G
inmin
G
inman
G
step
R
i
C
RANGE
A
VMAX
A
STEP
E
A
E
T
V
DC
A
mute
Gb
B
STEP
R
B
Gt
T
STEP
C
RANGE
S
STEP
E
A
V
DC
A
mute
Supply Voltage
Supply Current
Ripple Rejection
Input Resistance
Clipping Level
Input Separation
Minimum Input Gain
Maximum Input Gain
Step Resolution
Input Resistance
Control Range
Max. Attenuation
Step Resolution
Attenuation Set Error
Tracking Error
DC Step
Mute Attenuation
Control Range
Step Resolution
Internal Feedback Resistance
Control Range
Step Resolution
Control Range
Step Resolution
Attenuation Set Error
A
V
= 0 to -20dB
A
V
= -20 to -56dB
DC Step
Mute Attenuation
adjacent attenuation steps
80
Max. Boost/cut
Max. Boost/cut
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
80
+12.0
1
33
+13.0
1
70
0.5
-1.5
-2
THD = 0.3%
The selected input is grounded
through a 2.2µ capacitor
6
4
60
70
2
80
-1
29
1.5
20
45
45
0.5
-1.0
-1.5
9
7
90
100
2.5
100
0
30
2
33
47
47
1
0
0
0
0
0
0.5
100
+14.0
2
44
+14.0
2
76
1
0
0
0
100
+16.0
3
55
+15.0
3
82
1.5
1.5
2
3
1
31
2.5
50
49
49
1.5
1.0
1.5
1
2
3
130
10.2
10
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
Parameter
Test Condition
Min.
Typ.
Max.
Unit
INPUT STAGE
VOLUME CONTROL
BASS CONTROL (1)
TREBLE CONTROL (1)
SPEAKER ATTENUATORS
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.
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