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AK4688EN Datasheet, PDF (8/36 Pages) Asahi Kasei Microsystems – Asynchronous Stereo CODEC with Capless Line I/O | |||
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[AK4688]
Power Supplies
Parameter
min
typ
max
Unit
Power Supply Current
Normal Operation (PDN1 pin = PDN2 pin = âHâ)
AVVD1
AVDD2
DVDD
DVDD+AVDD1+AVDD2
Power-Down Mode (PDN1 pin = PDN2 pin = âLâ; Note 7)
DVDD+AVDD1+AVDD2
3
-
mA
11
-
mA
13
-
mA
27
40
mA
1
20
μA
Note 7. PDN1-2, TEST1-2 pins ã DVSS ã«ããã®ä»ã®ã¯ããã¯ãå«ãå
¨ã¦ã®ãã£ã¸ã¿ã«å
¥åãã³(MCLK1-2,
BICK1-2, LRCK1-2, SDTI, SDA, SCL, MSN, CAD0 pins)ã DVDD ã¾ã㯠DVSS ã«åºå®ããå ´åã®å¤ã§ãã
ãã ã MSN pin ã DVDD ã«åºå®ããå ´å LRCK1, BICK1 pin ã¯åºåç¶æ
ã«ãªãã¾ãã®ã§ãªã¼ãã³ã«ã
ã¦ä¸ããã
ÏÎϧλà²à©
(Ta=25°C; AVDD1=AVDD2 = DVDD= 3.3V; fs=48kHz)
Parameter
Symbol
min
typ
max
Unit
ADC Digital Filter (Decimation LPF):
Passband
(Note 8)
Stopband
Stopband Attenuation
±0.1dB
PB
0
18.8
kHz
-0.2dB
-
21.1
-
kHz
-3.0dB
-
21.7
-
kHz
SB
28.5
kHz
SA
73
dB
Group Delay
(Note 10)
GD
17
1/fs
Group Delay Distortion
ÎGD
0
µs
ADC Digital Filter (HPF):
Frequency Response (Note 8)
-3dB
FR
-0.1dB
1.0
Hz
7.1
Hz
DAC Digital Filter:
Passband
±0.05dB (Note 9)
-6.0dB
Stopband (Note 9)
Passband Ripple
Stopband Attenuation
Group Delay (Note 10)
PB
0
21.7
kHz
-
24.0
-
kHz
SB
26.3
kHz
PR
± 0.05
dB
SA
64
dB
GD
-
24
-
1/fs
De-emphasis Filter (DEM = ON)
De-emphasis Error
fs = 32kHz
(DCåºæº)
fs = 44.1kHz
fs = 48kHz
-
-
â1.5/0
dB
-
-
â0.2/+0.2
dB
-
-
0/+0.6
dB
DAC Digital Filter + Analog Filter: (DEM = OFF)
Frequency Response 20.0kHz fs=44.1kHz
FR
-
± 0.2
-
dB
40.0kHz fs=96kHz
FR
-
± 0.3
-
dB
80.0kHz fs=192kHz
FR
-
± 1.0
-
dB
Note 8. ééåã¨é»æ¢åã¯fsã«æ¯ä¾ãã¾ããä¾ãã°ã-0.1dBã§ã®21.8kHzã¯0.454 x fs(DAC)ã§ããåºæºå¨æ³¢æ°ã¯1kHz
ã§ãã
Note 9. ééåãé»æ¢åã®å¨æ³¢æ°ã¯ fs (ã·ã¹ãã ãµã³ããªã³ã°ã¬ã¼ã) ã«æ¯ä¾ãã
PB=0.4535Ãfs(@±0.05dB)ãSB=0.546Ãfs ã§ãã
Note 10. ãã£ã¸ã¿ã«ãã£ã«ã¿ã«ããæ¼ç®é
延ã§ãã¢ããã°ä¿¡å·ãå
¥åããã¦ãã両ãã£ãã«ã®24ããããã¼ã¿ãPORT1
ã®åºåã¬ã¸ã¹ã¿ã«ã»ãããããã¾ã§ã®æéã§ããDACã«ã¤ãã¦ã¯ã両ãã£ãã«ã®16/24ããããã¼ã¿ãPORT2ã®
å
¥åã¬ã¸ã¹ã¿ã«ã»ããããã¦ããã¢ããã°ä¿¡å·ãåºåãããã¾ã§ã®æéã§ãã
MS1420-J-00
-8-
2012/05
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