TDA7440 查看數據表（PDF） - STMicroelectronics
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TDA7440 Datasheet PDF : 17 Pages
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TDA7440D
Table 5. Electrical Characteristcs
Refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10KΩ, RG = 600Ω, all controls flat (G = 0dB), unless
otherwise specified.
Symbol
Parameter
Test Condition
Min. Typ. Max.
SUPPLY
VS Supply Voltage
6
9
10.2
IS
Supply Current
4
7
10
SVR Ripple Rejection
60
90
INPUT STAGE
RIN Input Resistance
70
100 130
VCL Clipping Level
THD = 0.3%
2
2.5
SIN Input Separation
The selected input is grounded
through a 2.2µ capacitor
80
100
Ginmin Minimum Input Gain
-1
0
1
Ginman Maximum Input Gain
29
30
31
Gstep Step Resolution
1.5
2
2.5
VOLUME CONTROL
Ri Input Resistance
20
33
50
CRANGE Control Range
45
47
49
AVMAX Max. Attenuation
45
47
49
ASTEP Step Resolution
0.5
1
1.5
EA Attenuation Set Error
AV = 0 to -24dB
-1.0
0
1.0
AV = -24 to -47dB
-1.5
0
1.5
ET Tracking Error
AV = 0 to -24dB
0
1
AV = -24 to -47dB
0
2
VDC DC Step
adjacent attenuation steps from
0dB to AV max
0
3
0.5
Amute Mute Attenuation
80
100
BASS CONTROL (1)
Gb Control Range
Max. Boost/cut
+12.0 +14.0 +16.0
BSTEP Step Resolution
1
2
3
RB Internal Feedback Resistance
33
44
55
TREBLE CONTROL (1)
Gt Control Range
Max. Boost/cut
+13.0 +14.0 +15.0
TSTEP Step Resolution
1
2
3
SPEAKER ATTENUATORS
CRANGE Control Range
70
76
82
SSTEP Step Resolution
0.5
1
1.5
EA Attenuation Set Error
AV = 0 to -20dB
-1.5
0
1.5
AV = -20 to -56dB
-2
0
2
VDC DC Step
adjacent attenuation steps
0
3
Amute 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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