TDA7439 STMicroelectronics, TDA7439 Datasheet - Page 9
TDA7439
Manufacturer Part Number
TDA7439
Description
IC PROCESSOR AUDIO DGTL 30-SDIP
Manufacturer
STMicroelectronics
Type
Audio Processorr
Datasheet
1.TDA7439.pdf
(23 pages)
Specifications of TDA7439
Applications
Automotive Systems
Mounting Type
Through Hole
Package / Case
30-SDIP (0.400", 10.16mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-8866-5
TDA7439
TDA7439
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TDA7439
3.1.2
3.2
3.3
Transposing and solving for the external component values we get:
Treble stage
The treble stage is a high-pass filter whose time constant is fixed by an internal resistor
(25 kΩ typically) and an external capacitor connected between treble pins and ground.
Typical responses are shown in
Pin CREF
The suggested value of 10 µF for the reference capacitor (C
can be reduced to 4.7 µF if the application requires faster power-on.
Electrical characteristics
Figure 5.
C1
C2
R2
=
=
=
THD vs frequency
----------------------------------------- -
2 π Fc Ri Q
----------------------------- -
A
--------------------------------------------------------------------- -
2 π C1 Fc
V
⋅ ⋅
Q
⋅ ⋅
–
2
A
1
⋅
V
C1
–
A
–
Q
⋅
V
1
⋅
2
–
1
⋅
⋅
–
(
A
Q
V
2
–
Figure 10
1
) Q
⋅
and
Figure 6.
Figure
11.
THD vs R
REF
), connected to pin CREF,
Application suggestions
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