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參數(shù)資料
| 型號(hào)： | TDA7439 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 音頻控制 |
| 英文描述： | 2 CHANNEL(S), TONE CONTROL CIRCUIT, PDIP30 |
| 封裝： | 0.400 INCH, SDIP-30 |
| 文件頁數(shù)： | 23/23頁 |
| 文件大?。?/td> | 296K |
| 代理商： | TDA7439 |
TDA7439
Application suggestions
9/23
Transposing and solving for the external component values we get:
3.1.2
Treble stage
The treble stage is a high-pass filter whose time constant is fixed by an internal resistor
(25 k
typically) and an external capacitor connected between treble pins and ground.
Typical responses are shown in Figure 10 and Figure 11.
3.2
Pin CREF
The suggested value of 10 F for the reference capacitor (CREF), connected to pin CREF,
can be reduced to 4.7 F if the application requires faster power-on.
3.3
Electrical characteristics
C1
A
V
1
–
2
π Fc Ri Q
------------------------------------------
=
C2
Q
2
C1
A
V
1
–
Q
2
–
------------------------------
=
R2
A
V
1
–
Q
2
–
2
π C1 Fc A
V
1
–
() Q
----------------------------------------------------------------------
=
Figure 5.
THD vs frequency
Figure 6.
THD vs RLOAD
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| TDA7439_08 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Three-band digitally-controlled audio processor |
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