參數(shù)資料
型號: AK4343EN
廠商: Asahi Kasei Microsystems Co.,Ltd
英文描述: Stereo DAC with HP/RCV/SPK-AMP
中文描述: 立體聲DAC惠普/垃圾車/胰腎聯(lián)合移植腺苷
文件頁數(shù): 37/98頁
文件大?。?/td> 851K
代理商: AK4343EN
ASAHI KASEI
[AK4343]
MS0478-E-01
2006/10
- 37 -
Gain Amplifier
The AK4343 has a gain amplifier. The gain is selected by the MGAIN1-0 bits (see Table 22). The typical input impedance
is 60k
(typ)@MGAIN1-0 bits = “00” or 30k
(typ)@MGAIN1-0 bits = “01”, “10” or “11”.
MGAIN1 bit
MGAIN0 bit
0
0
0
1
1
0
1
1
Table 22. Input Gain
Digital EQ/HPF/LPF
The AK4343 performs wind-noise reduction filter, stereo separation emphasis, gain compensation and ALC (Automatic
Level Control) by digital domain for input data (Figure 32). FIL1, FIL3 and EQ blocks are IIR filters of 1
st
order. The
filter coefficient of FIL3, EQ and FIL1 blocks can be set to any value. Refer to the section of “ALC operation” about
ALC.
FIL3 coefficient also sets the attenuation of the stereo separation emphasis.
The combination of GN1-0 bit (Table 23) and EQ coefficient set the compensation gain.
FIL1 and FIL3 blocks become HPF when F1AS and F3AS bits are “0” and become LPF when F1AS and F3AS bits are
“1”, respectively.
When EQ and FIL1 bits are “0”, EQ and FIL1 blocks become “through” (0dB). When FIL3 bit is “0”, FIL3 block become
“MUTE”. When each filter coefficient is changed, each filter should be set to “through” (“MUTE” in case of FIL3).
Input Gain
0dB
+20dB
+26dB
+32dB
Default
FIL3
FIL1
EQ
Gain
ALC
GN1-0
+24/+12/0dB
Any coefficient
F1A13-0
F1B13-0
F1AS
Any coefficient
F3A13-0
F3B13-0
F3AS
Any coefficient
EQA15-0
EQB13-0
EQC15-0
+12dB
0dB
0dB
-10dB
MUTE
(set by
FIL3 coefficient)
Wind-noise reduction
Stereo separation emphasis
Gain compensation
Figure 32. Digital EQ/HPF/LPF
GN1
0
0
1
Table 23. Gain select of gain block (x: Don’t care)
GN0
0
1
x
Gain
0dB
+12dB
+24dB
Default
相關PDF資料
PDF描述
AK4345 100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT
AK4345ET 100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT
AK4346 3.3V 192kHz 24-Bit 6-Channel DAC
AK4346EF 3.3V 192kHz 24-Bit 6-Channel DAC
AK4346VF 3.3V 192kHz 24-Bit 6-Channel DAC
相關代理商/技術參數(shù)
參數(shù)描述
AK4343VNP-L 制造商:AKM Semiconductor Inc 功能描述:AK4343VNP-L
AK4344 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC
AK4344_10 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ΔΣ DAC
AK4344ET 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ΔΣ DAC
AK4345 制造商:AKM 制造商全稱:AKM 功能描述:100dB 96kHz 24-Bit Stereo 3.3V ツヒ DAC with DIT