tda7440 STMicroelectronics, tda7440 Datasheet - Page 3

• Manufacturer Part Number: tda7440
• Description: Tone Control Digitally Controlled Audio Processor
• Manufacturer: STMicroelectronics

Table 5. Electrical Characteristcs
Refer to the test circuit T
otherwise specified.
SUPPLY
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.
Symbol
C
C
G
A
A
B
S
G
T
A
A
G
SVR
RANGE
RANGE
V
V
V
R
S
VMAX
STEP
Gb
STEP
STEP
STEP
inman
R
V
E
E
Gt
E
inmin
mute
mute
R
I
step
DC
DC
CL
S
IN
IN
S
A
T
B
A
i
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
DC Step
Mute Attenuation
Parameter
amb
= 25°C, V
S
= 9V, R
THD = 0.3%
The selected input is grounded
through a 2.2 capacitor
A
A
A
A
adjacent attenuation steps from
0dB to A
Max. Boost/cut
Max. Boost/cut
A
A
adjacent attenuation steps
V
V
V
V
V
V
= 0 to -24dB
= -24 to -47dB
= 0 to -24dB
= -24 to -47dB
= 0 to -20dB
= -20 to -56dB
L
V
Test Condition
= 10K , R
max
G
= 600 , all controls flat (G = 0dB), unless
+12.0
+13.0
Min.
-1.0
-1.5
-1.5
1.5
0.5
0.5
60
70
80
29
20
45
45
80
33
70
80
-1
-2
6
4
2
1
1
+14.0
+14.0
Typ.
100
100
100
100
2.5
0.5
90
30
33
47
47
44
76
9
7
0
2
1
0
0
0
0
0
2
2
1
0
0
0
+16.0
+15.0
Max.
10.2
130
2.5
1.5
1.0
1.5
1.5
1.5
10
31
50
49
49
55
82
TDA7440D
1
1
2
3
3
3
2
3
Vrms
Unit
mA
mV
mV
mV
K
K
K
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
V
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