參數(shù)資料
型號: AK4645
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: Stereo CODEC with MIC/HP-AMP
中文描述: 立體聲編解碼器麥克風(fēng)/惠普腺苷
文件頁數(shù): 49/96頁
文件大?。?/td> 821K
代理商: AK4645
ASAHI KASEI
[AK4645]
MS0543-E-00
2006/09
- 49 -
De-emphasis Filter
The AK4645 includes the digital de-emphasis filter (tc = 50/15
μ
s) by IIR filter. Setting the DEM1-0 bits enables the
de-emphasis filter (Table 37).
DEM1
DEM0
0
0
0
1
1
0
1
1
Table 37. De-emphasis Control
Bass Boost Function
The BST1-0 bits control the amount of low frequency boost applied to the DAC output signal (Table 38). If the BST1-0
bits are set to “01” (MIN Level), use a 47
μ
F capacitor for AC-coupling. If the boosted signal exceeds full scale, the analog
output clips to the full scale. Figure 38 shows the boost frequency response at –20dB signal input.
Mode
44.1kHz
OFF
48kHz
32kHz
Default
Boost Filter (fs=44.1kHz)
-25
-20
-15
-10
-5
0
10
100
1000
10000
Frequency [Hz]
L
MAX
MID
MIN
Figure 38. Bass Boost Frequency Response (fs=44.1kHz)
BST1
0
0
1
1
BST0
0
1
0
1
Mode
OFF
MIN
MID
MAX
Default
Table 38. Bass Boost Control
相關(guān)PDF資料
PDF描述
AK4646EZ Stereo CODEC with MIC/SPK-AMP
AK4646 Stereo CODEC with MIC/SPK-AMP
AK4646EN Stereo CODEC with MIC/SPK-AMP
AK4647 Stereo CODEC with MIC/HP-AMP
AK4647VN Stereo CODEC with MIC/HP-AMP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4645EN 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4645ENP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:
AK4645EZ 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/HP-AMP
AK4646 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with built-in MIC/SPK amplifier
AK4646_11 制造商:AKM 制造商全稱:AKM 功能描述:Stereo CODEC with MIC/SPK-AMP