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AK2301 Datasheet, PDF (4/18 Pages) Asahi Kasei Microsystems – 3.3V シングルチャネルPCMコーデック LSI | |||
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ASAHI KASEI
[AK2301]
端åæ©è½
ã¿ã¤ãã®è©³ç´°
DIN: ãã¸ã¿ã«ã¤ã³ããã
AIN: ã¢ããã°ã¤ã³ããã
端åçªå· 端åå称 ã¿ã¤ã
TOUT: ãã©ã¤ã¹ãã¼ãã¢ã¦ãããã
AOUT: ã¢ããã°ã¢ã¦ãããã
æ©
è½
PWR: é»æºã»ã°ã©ã³ã
10 VFTN
11 VFTP
9 GST
6 GSR
7 VFR
8 VR
5 VDD
13 VSS
4 FS
2 BCLK
1 DX
AIN A/Dã¸ã®å
¥åã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®å転差åå
¥åã
VFTP端åã¨å¤é¨æµæã§ãå·®åã¾ãã¯ã·ã³ã°ã«ã¨ã³ãå
¥åã¢ã³ããæ§æãã²
ã¤ã³èª¿æ´ãè¡ãã¾ãã
AIN A/Dã¸ã®å
¥åã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®æ£è»¢å·®åå
¥åã
VFTN端åã¨å¤é¨æµæã§ãå·®åã¾ãã¯ã·ã³ã°ã«ã¨ã³ãå
¥åã¢ã³ããæ§æãã²
ã¤ã³èª¿æ´ãè¡ãã¾ãã
AOUT A/Då
¥åã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®åºå。
å¤é¨æµæã§å·®åå
¥åã¢ã³ããæ§æãã²ã¤ã³èª¿æ´ãè¡ãã¾ãã
AOUT D/Aåºåã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®åºåã
å¤é¨æµæã§å転ã¢ã³ããæ§æãã²ã¤ã³èª¿æ´ãè¡ãã¾ããVRåºåã使ã£ã¦ä½
ååºåãæ§æãããã¨ãåºæ¥ã¾ãã
AIN D/Aåºåã²ã¤ã³èª¿æ´ç¨ãªãã¢ã³ãã®å転å
¥åã
å¤é¨æµæã§å転ã¢ã³ããæ§æãã²ã¤ã³èª¿æ´ãè¡ãã¾ãããã ãå
¥åã²ã¤ã³
ãªãã¢ã³ããå·®åã¢ã³ãã¨ãã¦æ§æããå ´åããã®ãªãã¢ã³ãã¯å·®åã¢ã³
ãã®ã¢ããã°GNDç¨ã®ãããã¡ã¨ãã¦ä½¿ç¨ããã¾ãããã®å ´åããã®ã¢ã³ã
ãç¨ããåºåã²ã¤ã³èª¿æ´ãããã³å·®åãã©ã¤ãåè·¯æ§æã¯åºæ¥ã¾ããã
AOUT D/Aã¢ããã°åºåã
GSRåºåã使ã£ã¦ä½ååºåãæ§æãããã¨ãåºæ¥ã¾ãã
PWR æ£é»æºç«¯åã
PWR è² é»æºç«¯åã
DIN PCMãã¼ã¿éååæä¿¡å·å
¥åã
PCMãã¼ã¿å
¥åºåã¿ã¤ãã³ã°ãå¶å¾¡ãã¾ãããã¯ã¼ãã¦ã³æãé¤ããBCLKã¨
åæãã8kHz ã®ä¿¡å·ã常ã«å
¥åãã¦ãã ãããFSãåæ¢ããå ´åã¯ãBCLK=L
ã¨ãã¦ãAK2301ããã¯ã¼ãã¦ã³ã¢ã¼ãã«ãã¦ä¸ããã
DIN PCMãã¼ã¿è»¢éã¬ã¼ãå¶å¾¡ã¯ããã¯å
¥åã
BCLK=Lã§ãAK2301ã¯ãã¯ã¼ãã¦ã³ãã¾ããé常åä½æã¯ã64k*N(N=1ï½32)Hz
ï¼64kï½2048kHzï¼ã®ã¯ããã¯ãduty40ï½60%ã§å¸¸ã«å
¥åãã¦ãã ããã
TOUT PCMãã¼ã¿åºå端åã
BCLKã«åæãã¦A/DãããPCMãã¼ã¿ãåºåãã¾ãããã®ç«¯åã¯éä¿¡ãã¼ã¿
ãåå¨ãã8ãããæé以å¤ã¯ããã¤ã¤ã³ãã¼ãã³ã¹ã¨ãªãã¾ãã
3 DR
16 MUTEN
15 ALAWN
12 VREF
14 PLLC
DIN PCMãã¼ã¿ã®å
¥å端åã
BCLKã«åæãã¦PCMãã¼ã¿ãå
¥åãã¾ãã
DIN ãã¥ã¼ãè¨å®ç«¯åã
Lã§ãã¥ã¼ããèµ·åããã¾ãã
DIN A/μ-lawåæ¿ç«¯åã
âLâ=A-law,âHâ=μ-law é常使ç¨æã¯ãH or Lã«åºå®ãã¦ãã ããã
AOUT ã¢ããã°ã°ã©ã³ãé»æºåºå端åã
1.0 uF以ä¸ã®å®¹éãå¤ä»ãã¦ä¸ããã
AOUT PLLç¨ å®¹éæ¥ç¶ç«¯åã
0.33uF±40%(温度ç¹æ§è¾¼ã¿)ã®å®¹éãå¤ä»ãã¦ä¸ããã
<MS0416-J-02>
4
2013/05
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