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TDA7438 数据表(PDF) 3 Page - STMicroelectronics

部件名 TDA7438
功能描述  THREE BANDS DIGITALLY CONTROLLED AUDIO PROCESSOR
Download  19 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

TDA7438 数据表(HTML) 3 Page - STMicroelectronics

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TDA7438
Table 5. Electrical Characteristcs: (refer to the test circuit Tamb = 25°C, VS = 9V, RL= 10K
Ω,
RG = 600
Ω, 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
7
mA
SVR
Ripple Rejection
60
90
dB
INPUT STAGE
RIN
Input Resistance
100
K
VCL
Clipping Level
THD = 0.3%
2
2.5
Vrms
SIN
Input Separation
The selected input is grounded
through a 2.2
µ capacitor
80
100
dB
Ginmin
Minimum Input Gain
-1
0
1
dB
Ginman
Maximum Input Gain
30
dB
Gstep
Step Resolution
2
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 (The center frequency and the response quality can be chosen by the ext. circuitry)
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 (The center frequency and the response quality can be chosen by the ext. circuitry)
Gt
Control Range
Max. Boost/cut
+13.0
+14.0
+15.0
dB
TSTEP
Step Resolution
1
2
3
dB
MIDDLE CONTROL (The center frequency and the response quality can be chosen by the ext. circuitry
)
Gm
Control Range
Max. Boost/cut
+12.0
+14.0
+16.0
dB
MSTEP
Step Resolution
1
2
3
dB
RM
Internal Feedback Resistance
18.75
25
31.25
K


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