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參數(shù)資料
| 型號(hào)： | AK4569 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 20-Bit Stereo CODEC with IPGA & HP-AMP |
| 中文描述： | 20位立體聲編解碼器與單親遺傳算法 |
| 文件頁數(shù)： | 21/45頁 |
| 文件大小： | 474K |
| 代理商： | AK4569 |
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ASAHI KASEI
[AK4569]
MS0292-E-01
2005/07
- 21 -
De-emphasis Filter
The AK4569 includes a digital de-emphasis filter (tc = 50/15
μ
s) by IIR filter corresponding to three sampling frequencies
(32kHz, 44.1kHz and 48kHz). The de-emphasis filter is enabled by setting DEM1-0 bits (Table 16).
Bass Boost Function
By controlling BST1-0 bits, the low frequency boost signal can be output from DAC. The setting value is common in Lch
and Rch (Table 17).
The cut-off frequency (fc) of HPF depends on the external resistor and capacitor values. Table 4 shows the relationship of
external resistor, capacitor, fc and output power, where load resistance of headphone is 16
. Output level of headphone
amp is 1.5Vpp (typ).
AK4569
HP-AMP
16
Headphone
R
C
Figure 16. External Circuit Example of Headphone
R [
]
C [
μ
F]
fc [Hz]
BOOST=OFF
148.6
69.8
105.8
49.7
fc [Hz]
BOOST=MID
65
27
43
20
Output Power [mW]
47
100
47
100
6.8
8.7
16
4.4
Table 4. Relationship of external circuit, output power and frequency response
Note: Cut-off frequency (fc) at BOOST=MID is approximate value.
System Reset
The AK4569 should be reset once by bringing PDN “L” upon power-up. After exiting reset, VCOM, IPGA, ADC, DAC,
HPL, HPR and MOUT switch to the power-down state. The contents of the control register are maintained until the reset
is done.
ADC exits reset and power down state by MCLK after PMADC bit is changed to “1”, and then ADC is powered up and
the internal timing starts clocking by LRCK “
↑
”. ADC is in the power-down mode until MCLK and LRCK are input.
DAC also exits reset and power down state when MCLK and LRCK are input after PMDAC= “1”.
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PDF描述 |
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| AK4569VN | 20-Bit Stereo CODEC with IPGA & HP-AMP |
| AK4584VQ | 24Bit 96kHz Audio CODEC with DIT/DIR |
| AK4586 | MULTI CHANNEL AUDIO CODEC WITH DIR |
| AK4586VQ | Circular Connector; MIL SPEC:MIL-C-5015 A/B/C; Body Material:Aluminum Alloy; Series:97-3100A; No. of Contacts:4; Connector Shell Size:18; Connecting Termination:Solder; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| AK4588 | 2/8 CHANNEL AUDIO CODEC WITH DIR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4569VN | 制造商:AKM 制造商全稱:AKM 功能描述:20-Bit Stereo CODEC with IPGA & HP-AMP |
| AK4571 | 制造商:AKM 制造商全稱:AKM 功能描述:USB I/F Audio CODEC |
| AK4571_05 | 制造商:AKM 制造商全稱:AKM 功能描述:USB Interface Audio CODEC |
| AK4571VQ | 制造商:AKM 制造商全稱:AKM 功能描述:USB Interface Audio CODEC |
| AK4571VQP | 功能描述:IC AUDIO CODEC W/USB 16B 48LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:PCM 數(shù)據(jù)接口:PCM 音頻接口 分辨率（位）:15 b ADC / DAC 數(shù)量:1 / 1 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):- 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):- 電壓 - 電源，模擬:2.7 V ~ 3.3 V 電壓 - 電源，數(shù)字:2.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:80-VFBGA 供應(yīng)商設(shè)備封裝:80-BGA MICROSTAR JUNIOR（5x5） 包裝:帶卷 (TR) 其它名稱:296-21257-2 |
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