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參數(shù)資料
| 型號： | AK4358VQ |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 192 KHZ 24 BIT 8 CH DAC WITH DSD INPUT |
| 中文描述： | 192千赫24位8路DAC，具有DSD輸入 |
| 文件頁數(shù)： | 20/35頁 |
| 文件大?。?/td> | 457K |
| 代理商： | AK4358VQ |
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ASAHI KASEI
[AK4358]
MS0203-E-00
2003/02
- 20 -
De-emphasis Filter
A digital de-emphasis filter is available for 32, 44.1 or 48kHz sampling rates (tc = 50/15μs) and is enabled or disabled
with DEM0 and DEM1. In case of double speed and quad speed mode, the digital de-emphasis filter is always off. When
DSD mode, DEM0-1 is invalid.
DEM1
DEM0
0
0
0
1
1
0
1
1
Mode
44.1kHz
OFF
48kHz
32kHz
Default
Table 13. De-emphasis Filter Control (Normal Speed Mode)
Output Volume
The AK4358 includes channel independent digital output volumes (ATT) with 128 levels at 0.5dB steps including
SMUTE. These volumes are in front of the DAC and can attenuate the input data from 0dB to –63dB and mute. Transition
time is set by AST1-0 bits(Table 15) When changing levels, transitions are executed via soft changes; thus no switching
noise occurs during these transitions. When ATTE bit is set to “0”, the DAC input data goes to “0” immediately. It takes
a time of group delay to mute the analog output. ATTE bit should be “1” to enable the volume setting.
ATTE
ATT6-0
Attenuation Level
7FH
7EH
7DH
:
02H
01H
00H
0
Don’t care
0dB
-0.5dB
-1.0dB
:
-62.5dB
-63.0dB
SMUTE (-
∞
)
OFF ( “0” )
1
Default
Table 14. Attenuation Level of Output Volume
Mode
0
1
2
3
ATS1
0
0
1
1
ATS0
0
1
0
1
ATT speed
1792/fs
896/fs
256/fs
N/A
Default
Table 15. Transition time of output volume
In case of Mode 0, it takes 1792/fs to transit from 7FH(0dB) to 00H(SMUTE). In case Mode1, it takes 896/fs to transit
from 7FH(0dB) to 00H(SMUTE). In case Mode2 and 3,it takes 256/fs to transit from 7FH(0dB) to 00H (SMUTE). If
PDN pin goes to “L”, ATT6-0 registers are initialized to 7FH.ATT6-0 registers go to 7FH when RSTN bit is set to “0”.
When RSTN bit returns to “1”, ATT6-0 registers go to the set value. Digital output volume function is independent of soft
mute function.
The setting value of the register is held when switching between PCM mode and DSD mode.
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| AK4358VQP-L | 功能描述:IC DAC 24BIT SERIAL 48LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| AK4359 | 制造商:AKM 制造商全稱:AKM 功能描述:192 KHZ 24 BIT 8CH DAC |
| AK4359_06 | 制造商:AKM 制造商全稱:AKM 功能描述:106dB 192kHz 24-Bit 8ch DAC |
| AK4359A | 制造商:AKM 制造商全稱:AKM 功能描述:106dB 192kHz 24-Bit 8ch DAC |
| AK4359AEF | 制造商:AKM 制造商全稱:AKM 功能描述:106dB 192kHz 24-Bit 8ch DAC |
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