參數(shù)資料
型號(hào)： AK4366VT
廠商： Asahi Kasei Microsystems Co.,Ltd
英文描述： Low Power 24-Bit 2ch DAC with HP-AMP
中文描述： 低功耗24位2通道DAC，具有惠普腺苷
文件頁(yè)數(shù)： 15/31頁(yè)
文件大?。?/td> 349K
代理商： AK4366VT
ASAHI KASEI
[AK4366]
MS0248-E-01
2004/03
- 15 -
Digital Attenuator
The AK4366 has a channel-independent digital attenuator (256 levels, 0.5dB step). This digital attenuator is placed before
the D/A converter. ATTL/R7-0 bits set the attenuation level (0dB to
127dB or MUTE) for each channel (Table 5). At
DATTC bit = “1”, ATTL7-0 bits control both Lch and Rch attenuation levels. At DATTC bit = “0”, ATTL7-0 bits control
the Lch level and ATTR7-0 bits control the Rch level. In parallel mode (P/S pin = “H”), digital attenuator is fixed to 0dB.
When HPM bit = “1”, (L+R)/2 summation is done after volume control.
ATTL7-0
ATTR7-0
FFH
FEH
0.5dB
FDH
1.0dB
FCH
1.5dB
:
:
02H
126.5dB
01H
127.0dB
00H
MUTE (
∞
)
Table 5. Digital Volume ATT values
The ATS bit sets the transition time between set values of ATT7-0 bits as either 1061/fs or 7424/fs (Table 6). When ATS
bit = “0”, a soft transition between the set values occurs(1062 levels). It takes 1061/fs (24ms@fs=44.1kHz) from
FFH(0dB) to 00H(MUTE). The ATTs are 00H when the PMDAC bit is “0”. When the PMDAC returns to “1”, the ATTs
fade to their current value. Digital attenuator is independent of the soft mute function.
ATT speed
ATS
0dB to MUTE
0
1061/fs
1
7424/fs
Table 6. Transition time between set values of ATT7-0 bits
Attenuation
0dB
Default
:
:
1 step
4/fs
29/fs
Default
相關(guān)PDF資料
PDF描述
AK4366 Low Power 24-Bit 2ch DAC with HP-AMP
AK4367VN Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer
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AK4370VN 24-Bit 2ch DAC with HP-AMP & Output Mixer
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AK4367 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer
AK4367_05 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer
AK4367VN 制造商:AKM 制造商全稱(chēng):AKM 功能描述:Low Power 24-Bit 2ch DAC with HP-AMP & Output Mixer
AK4367VNP-L 制造商:Asahi Kasei Microsystems Co Ltd 功能描述:
AK4368 制造商:AKM 制造商全稱(chēng):AKM 功能描述:PLL & HP-AMP DAC
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