TDA7439 STMicroelectronics, TDA7439 Datasheet - Page 9

• Manufacturer Part Number: TDA7439
• Description: IC PROCESSOR AUDIO DGTL 30-SDIP
• Manufacturer: STMicroelectronics
• Type: Audio Processorr

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
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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