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參數(shù)資料
| 型號(hào)： | TC9404FNG |
| 元件分類： | DAC |
| 英文描述： | PARALLEL, WORD INPUT LOADING, 1-BIT DAC, PDSO24 |
| 封裝： | 0.300 INCH, 0.65 MM PITCH, PLASTIC, SSOP-24 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 369K |
| 代理商： | TC9404FNG |
TC9404FNG
2006-04-27
10
(1)
Digital attenuator
The digital attenuation command is enabled when D7 = “L”. The attenuation data can be set in 128
different ways. The relationship with the command’s output is shown below.
Table 6
Attenuation Data/Audio Data Output
Attenuation Data D6~D0
Audio Output
7F (HEX)
0.000dB
7E (HEX)
0.069dB
:
01 (HEX)
42.076dB
00 (HEX)
∞
01 (HEX) to 7E (HEX): The attenuation value is obtained with the following equation.
ATT = 20 og (input data/127) dB
Example: In case of attenuator = 7 A
ATT = 20 og (122/127) dB = 0.349dB
(2)
Digital de-emphasis filter
The Digital De-emphasis setting mode is enabled when D7 = “H”.
Controlled with EMP and BS signal.
Table 7
Digital De-Emphasis Filter Setting
BS
H
L
EMP
H
L
H
L
Mode
32
48
44.1
OFF
(kHz)
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