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參數(shù)資料
| 型號： | AKD4564 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
| 中文描述： | 16位編解碼器，配有ALC和麥克風(fēng)/惠普/胰腎聯(lián)合移植腺苷 |
| 文件頁數(shù)： | 21/48頁 |
| 文件大小： | 382K |
| 代理商： | AKD4564 |
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ASAHI KASEI
[AK4564]
MS0140-E-01
2002/07
- 21 -
n
Headphone-Amps
The Power supply voltage for Headphone-Amp is supplied from HVDD pin and centered around HVCM voltage. The
load resistance and output voltage are specified by HVDD voltage. The output voltage can be changed by supplying
AVDD voltage and HPG bit. (Refer to Table 3)
HVDD
2.6
～
3.6V
HPG bit
Output Voltage
(0.59 x AVDD) Vpp
Load Resistance (min)
22
Table 3. Load resistance and output voltage of Headphone-Amp
When HPG bit is “0”, the signals from MIX1, DAC and BEEP2 are output from Headphone-Amps with 0dB gain. When
HPG is “1”, the signals from MIX1, DAC and BEEP2 output from Headphone-Amps with +16.5dB gain. (Refer to Figure
15)
When HPDAC, HPMIX and BEEP2H bits are “0”, the input signals to Headphone-Amp are disabled and HPL/HPR pins
output HVCM voltage.
HPMIX, HPDAC and BEEP2H bits control ON/OFF of each input signal. When these bits are “1” at the same time, all
input signals are mixed by the ration of “1:1”. (Refer to Figure 13 and Figure 16)
4.0
～
5.5V
1
(0.98 x AVDD) Vpp
100
0
0dBV
-10dBV
-20dBV
-30dBV
OATT+DAC
HP-AMP (+16.5dB)
FS
FS-12dB
-27dBV
-15dBV
-16.5dBV
+1.5dBV
0dBV
-4.5dBV
-16.5dBV
OATT=-10.5dB
-4.5dBV
+10dBV
-10.5dBV
+12dBV
OATT = 0dB
Figure 15. Headphone-Amp Level Diagram (AVDD=2.8V, HVDD=4.5V, HPG = “1”, OATT = 0dB& -10.5dB)
* FS = Full Scale
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PDF描述 |
|---|---|
| AK4565 | LOW POWER 20BIT CODEC WITH BUILT IN ALC |
| AK4565VF | LOW POWER 20BIT CODEC WITH BUILT IN ALC |
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| AK4566VN | 20bit Stereo CODEC with built-in IPGA & HP-AMP |
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相關(guān)代理商/技術(shù)參數(shù) |
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| AKD4565 | 制造商:AKM 制造商全稱:AKM 功能描述:Evaluation board Rev.A for AK4565 |
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| AKD4569 | 制造商:AKM 制造商全稱:AKM 功能描述:Evaluation board Rev.A for AK4569 |
| AKD4571 | 制造商:AKM 制造商全稱:AKM 功能描述:USB Interface Audio CODEC |
| AKD4584 | 制造商:AKM 制造商全稱:AKM 功能描述:24Bit 96kHz Audio CODEC with DIT/DIR |
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