参数资料
型号: TDA7440D
厂商: STMICROELECTRONICS
元件分类: 音频控制
英文描述: 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封装: SO-28
文件页数: 11/17页
文件大小: 735K
代理商: TDA7440D
3/17
TDA7440
Table 5. Electrical Characteristcs
Refer to the test circuit Tamb = 25°C, VS = 9V, RL = 10K
, RG = 600, all controls flat (G = 0dB), unless
otherwise specified.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
SUPPLY
VS
Supply Voltage
6
9
10.2
V
IS
Supply Current
4
7
10
mA
SVR
Ripple Rejection
60
90
dB
INPUT STAGE
RIN
Input Resistance
70
100
130
K
VCL
Clipping Level
THD = 0.3%
2
2.5
Vrms
SIN
Input Separation
The selected input is grounded
through a 2.2
capacitor
80
100
dB
Ginmin
Minimum Input Gain
-1
0
1
dB
Ginman
Maximum Input Gain
29
30
31
dB
Gstep
Step Resolution
1.5
2
2.5
dB
VOLUME CONTROL
Ri
Input Resistance
20
33
50
K
CRANGE
Control Range
45
47
49
dB
AVMAX
Max. Attenuation
45
47
49
dB
ASTEP
Step Resolution
0.5
1
1.5
dB
EA
Attenuation Set Error
AV = 0 to -24dB
-1.0
0
1.0
dB
AV = -24 to -47dB
-1.5
0
1.5
dB
ET
Tracking Error
AV = 0 to -24dB
0
1
dB
AV = -24 to -47dB
0
2
dB
VDC
DC Step
adjacent attenuation steps from
0dB to AV max
0
0.5
3mV
mV
Amute
Mute Attenuation
80
100
dB
BASS CONTROL (1)
Gb
Control Range
Max. Boost/cut
+12.0
+14.0
+16.0
dB
BSTEP
Step Resolution
1
2
3
dB
RB
Internal Feedback Resistance
33
44
55
K
TREBLE CONTROL (1)
Gt
Control Range
Max. Boost/cut
+13.0
+14.0
+15.0
dB
TSTEP
Step Resolution
1
2
3
dB
SPEAKER ATTENUATORS
CRANGE
Control Range
70
76
82
dB
SSTEP
Step Resolution
0.5
1
1.5
dB
EA
Attenuation Set Error
AV = 0 to -20dB
-1.5
0
1.5
dB
AV = -20 to -56dB
-2
0
2
dB
VDC
DC Step
adjacent attenuation steps
0
3
mV
Amute
Mute Attenuation
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 and TREBLE response: The center frequency and the response quality can be chosen by the external circuitry.
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