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參數(shù)資料
| 型號： | AK4370VN |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 24-Bit 2ch DAC with HP-AMP & Output Mixer |
| 中文描述： | 24位2通道DAC，具有惠普腺苷 |
| 文件頁數(shù)： | 26/49頁 |
| 文件大?。?/td> | 695K |
| 代理商： | AK4370VN |
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ASAHI KASEI
[AK4370]
MS0595-E-00
2007/03
- 26 -
< Analog Mixing Circuit for Headphone Output >
DALHL, LIN1HL, RIN1HL, LIN2HL and RIN2HL bits control each path switch of HPL output. DARHR, LIN1HR,
RIN1HR, LIN2HR and RIN2HR bits control each path switch of HPR output.
When L1HM=L2HM bits = “0”, HPG1-0 bits = “00” (R
1H
= R
2H
= R
DH
= 100k) and ATTH4-0 bits = “00H” (0dB), the
mixing gain is +0.95dB (typ). When HPG1-0 bit = “01” (R
DH
= 50k), the mixing gain of DAC path is +6.95dB (typ).
When HPG1-0 bit = “10” (R
DH
= 25k), the mixing gain of DAC path is +12.95dB (typ). When L1HM and L2HM bits are
“1”, LIN1/RIN1 and LIN2/RIN2 signals are output from HPL/R pins as (L+R)/2, respectively (R
1H
= R
2H
= 200k).
When LDIF=LDIFH=LIN1L=RIN1R bits = “1”, LIN1 and RIN1 pins becomes IN+ and IN
pins, respectively. IN+ and
IN
pins can be used as full-differential mono line input for analog mixing for headphone-amp. In this case, LIN1HL,
RIN1HL, LIN1HR and RIN1HR bits should be “0”.
If the path is OFF and the signal is input to the input pin, the input pin should be biased to a voltage equivalent to VCOM
voltage (= 0.475 x AVDD) externally. Figure 39 shows the external bias circuit example.
Figure 23
LDIFH bit
+
HPL pin
HP-Amp
1.11R
H
R
DH
DALHL bit
+
100k(typ)
R
H
RIN2 pin
R
2H
RIN2HL bit
LIN2 pin
R
2H
LIN2HL bit
DAC Lch
RIN1 pin
R
1H
RIN1HL bit
LIN1 pin
R
1H
LIN1HL bit
100k(typ)
+
HPR pin
HP-Amp
1.11R
H
R
DH
DARHR bit
+
100k(typ)
R
H
RIN2 pin
R
2H
RIN2HR bit
LIN2 pin
R
2H
LIN2HR bit
DAC Rch
RIN1 pin
R
1H
RIN1HR bit
LIN1 pin
R
1H
LIN1HR bit
Figure 23
100k(typ)
LDIFH bit
Figure 21. Summation circuit for HPL/R output
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AK4371 | 制造商:AKM 制造商全稱:AKM 功能描述:24bit DAC with Headphone Amplifier |
| AK4371VN | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
| AK4372 | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
| AK4372ECB | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
| AK4372VCB | 制造商:AKM 制造商全稱:AKM 功能描述:DAC with built-in PLL & HP-AMP |
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