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AK4425AET 参数 Datasheet PDF下载

AK4425AET图片预览
型号: AK4425AET
PDF下载: 下载PDF文件 查看货源
内容描述: 192kHz的24位立体声DAC ΔΣ具有2Vrms的输出 [192kHz 24-Bit Stereo ΔΣ DAC with 2Vrms Output]
分类和应用: 转换器数模转换器光电二极管
文件页数/大小: 27 页 / 393 K
品牌: AKM [ ASAHI KASEI MICROSYSTEMS ]
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[AK4425A]  
SHARP ROLL-OFF FILTER CHARACTERISTICS  
(Ta = 25°C; VDD=AVDD = +4.5 +5.5V; fs = 44.1 kHz; DEM = OFF; SLOW = “0”)  
Parameter  
Digital filter  
Passband  
Symbol  
min  
typ  
max  
Units  
PB  
0
-
24.1  
20.0  
-
kHz  
kHz  
kHz  
dB  
dB  
1/fs  
±0.05dB (Note 11)  
22.05  
–6.0dB  
Stopband (Note 11)  
Passband Ripple  
Stopband Attenuation  
Group Delay (Note 12)  
SB  
PR  
SA  
GD  
± 0.02  
54  
-
19.3  
-
Digital Filter + LPF  
Frequency Response 20.0kHz fs=44.1kHz  
40.0kHz fs=96kHz  
FR  
FR  
FR  
-
-
-
-
-
-
dB  
dB  
dB  
± 0.05  
± 0.05  
± 0.05  
80.0kHz fs=192kHz  
Note 11. The passband and stopband frequencies scale with fs(system sampling rate).  
For example, PB=0.4535×fs (@±0.05dB), SB=0.546×fs.  
Note 12. Calculated delay time caused by digital filter. This time is measured from setting the 16/24bit data  
of both channels to input register to the output of the analog signal.  
SLOW ROLL-OFF FILTER CHARACTERISTICS  
(Ta = 25°C; VDD=AVDD = +4.5 +5.5V; fs = 44.1kHz; DEM = OFF; SLOW = “1”)  
Parameter  
Digital Filter  
Passband  
Symbol  
min  
typ  
max  
Units  
±0.04dB (Note 13)  
-3.0dB  
PB  
0
-
8.1  
-
kHz  
kHz  
kHz  
dB  
18.2  
Stopband  
(Note 13)  
SB  
PR  
SA  
GD  
39.2  
Passband Ripple  
Stopband Attenuation  
Group Delay  
± 0.005  
72  
-
dB  
(Note 12)  
19.3  
-
1/fs  
Digital Filter + LPF  
Frequency Response  
FR  
FR  
FR  
-
-
-
+0/-5  
+0/-4  
+0/-5  
-
-
-
dB  
dB  
dB  
fs=44.kHz  
fs=96kHz  
fs=192kHz  
20.0kHz  
40.0kHz  
80.0kHz  
Note 13. The passband and stopband frequencies scale with fs(system sampling rate).  
For example, PB=0.185×fs (@±0.04dB), SB=0.888×fs.  
MS1127-E-01  
2011/03  
- 7 -  
 
 
 
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