參數(shù)資料
型號: TDA7404D
廠商: STMICROELECTRONICS
元件分類: 音頻控制
英文描述: 1 CHANNEL(S), TONE CONTROL CIRCUIT, PDSO28
封裝: SOP-28
文件頁數(shù): 18/35頁
文件大?。?/td> 633K
代理商: TDA7404D
TDA7404
I2C bus interface
Note 1: The attenuation is specified at high frequencies. Around the center frequency the value is different
depending on the programmed attenuation (see Section 4.4: Loudness).
Note 2: It is not recommended to use a gain more than 20 dB for system performance reason. In general, the
max. gain should be limited by software to the maximum value, which is needed for the system.
Table 9.
Loudness
MSB
LSB
Function
D7
D6
D5
D4
D3
D2
D1
D0
0
:
1
0
:
1
0
:
1
0
1
:
0
1
Attenuation
0 dB
-1 dB
:
-14 dB
-15 dB
0
1
0
1
0
1
Filter / Center Frequency
off (flat) 'D6 must be = 0'
400 Hz
800 Hz
2.4 kHz
0
1
Shape
Low boost
Low and high boost
0
1
Soft-step-Volume
off
on
Table 10.
Volume
MSB
LSB
Function
D7
D6
D5
D4
D3
D2
D1
D0
0
1
0
1
0
1
0
1
0
1
0
1
X
0
1
0
1
X
0
1
0
1
X
0
1
0
1
0
1
0
1
0
1
X
Gain/attenuation
not allow
+30.0 dB
+29.0 dB
:
+1.0 dB
0.0 dB
- 1.0 dB
- 2.0 dB
:
-78.0 dB
-79.0 dB
Mute
0
1
Diffin - mode
Single ended stereo
Differential Stereo
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