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參數(shù)資料
| 型號(hào)： | AK4561VQ |
| 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-Amp |
| 中文描述： | 16位編解碼器在ALC和內(nèi)置麥克風(fēng)/惠普放大器 |
| 文件頁數(shù)： | 36/48頁 |
| 文件大?。?/td> | 332K |
| 代理商： | AK4561VQ |
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ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
Rev. 0.9
2000/09
- 36 -
n
Headphone Amplifiers
The output circuit of headphone amplifier does not need a capacitor to cancel DC because the headphone amplifier
includes center amplifier (HVCM). Load impedance of headphone amplifier is minimum 55
.
The output signals are muted when S8 bit is “0”, the headphone amplifiers become Power-Save-Mode. Then HPL/HPR
pin go Hi-z and HVCM pin is output to VCOM voltage. (Refer to Figure 23)
When PM5 bit is “0”, the headphone amplifiers can be powered-up completely. Then HPL/HPR pins become Hi-z and
HVCM pin becomes “L” (AGND). (Refer to Figure 24)
When PD pin changes from “L” to “H” after power-up, the output signals from headphone amplifier is muted, the
headphone amplifiers are powered-up by Power-Save-Mode. After that, S8 bit should be changed into “0” before
headphone amplifier is done by the normal operation.
Figure 22. Headphone-Amps Normal Operation
Figure 23. Headphone-Amps Power-Save-Mode
Figure 24. Headphone-Amps Power-Down-Mode
HPL/HPR
HVCM
S8
+
-
+
-
PM5
HPL/HPR
HVCM
S8
+
-
+
-
PM5
HPL/HPR
HVCM
S8
+
-
+
-
PM5
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AK4562 | LOW POWER 20BIT CODEC WITH PGA |
| AK4562VN | LOW POWER 20BIT CODEC WITH PGA |
| AK4563A | Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4563AVF | Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4564 | 16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4562 | 制造商:AKM 制造商全稱:AKM 功能描述:EVALUATION BOARD REV.A FOR AK4562 |
| AK4562VN | 制造商:AKM 制造商全稱:AKM 功能描述:LOW POWER 20BIT CODEC WITH PGA |
| AK4563A | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4563AVF | 制造商:AKM 制造商全稱:AKM 功能描述:Low Power 16bit 4ch ADC & 2ch DAC with ALC |
| AK4564 | 制造商:AKM 制造商全稱:AKM 功能描述:16BIT CODEC WITH BUILT-IN ALC AND MIC/HP/SPK-AMP |
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