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參數(shù)資料
| 型號： | AK4345ET |
| 廠商： | ASAHI KASEI POWER DEVICES CORP |
| 元件分類： | DAC |
| 英文描述： | 100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT |
| 中文描述： | SERIAL INPUT LOADING, 24-BIT DAC, PDSO16 |
| 封裝： | 0.65 MM PITCH, LEAD FREE, PLASTIC, TSSOP-16 |
| 文件頁數(shù)： | 15/26頁 |
| 文件大?。?/td> | 540K |
| 代理商： | AK4345ET |
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[AK4345]
■
De-emphasis Filter
A digital de-emphasis filter is available for 32, 44.1 or 48kHz sampling rates (tc = 50/15μs) and is controlled by DEM0
and DEM1. In double speed and quad speed mode, the digital de-emphasis filter is always off.
DEM1
DEM0
Mode
0
0
1
1
0
1
0
1
44.1kHz
OFF
48kHz
32kHz
(default)
Table 5. De-emphasis Filter Control (Normal Speed Mode)
■
Power-down
The AK4345 is placed in the power-down mode by bringing PDN pin = “L”. and the digital filter is reset at the same time.
This reset should always be done after power up.
PDN
Normal Operation
Internal
State
Power-down
Normal Operation
GD
GD
“0” data
D/A Out
(Analog)
D/A In
(Digital)
Clock In
MCLK, BICK, LRCK
(2)
(4)
External
MUTE
(6)
(4)
(2)
Mute ON
(3)
(5)
Don’t care
(1)
Notes:
(1)
PDN pin should be “L” for 19ms or more when an electrolytic capacitor 4.7
μ
F is attached between VCOM pin and
VSS.
(2)
The analog output corresponding to digital input has the group delay (GD).
(3)
When PDN pin = “L”, the analog output is Hi-Z.
(4)
Click noise occurs in 3
～
4LRCK at both edges (
↑
↓
) of PDN signal. This noise is output even if “0” data is input.
(5)
The external clocks (MCLK, BICK and LRCK) can be stopped in the power down mode (PDN pin = “L”).
(6)
Please mute the analog output externally if the click noise (4) influences system application. The timing example
is shown in this figure.
Figure 17. Power-down/up sequence example
MS0635-E-00
2007/06
- 15 -
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4346 | 3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4346EF | 3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4346VF | 3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4348 | 3.3V 192kHz 24-Bit 8-Channel DAC |
| AK4348EF | 3.3V 192kHz 24-Bit 8-Channel DAC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4346 | 制造商:AKM 制造商全稱:AKM 功能描述:3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4346EF | 制造商:AKM 制造商全稱:AKM 功能描述:3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4346VF | 制造商:AKM 制造商全稱:AKM 功能描述:3.3V 192kHz 24-Bit 6-Channel DAC |
| AK4348 | 制造商:AKM 制造商全稱:AKM 功能描述:3.3V 192kHz 24-Bit 8-Channel DAC |
| AK4348EF | 制造商:AKM 制造商全稱:AKM 功能描述:3.3V 192kHz 24-Bit 8-Channel DAC |
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