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AK4954AEN Datasheet, PDF (1/26 Pages) Asahi Kasei Microsystems – 32bit Stereo CODEC with MIC/HP/SPK-AMP | |||
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[AK4954A]
AK4954A
32bit Stereo CODEC with MIC/HP/SPK-AMP
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AK4954A ã¯ãã¤ã¯ã¢ã³ããããããã©ã³ã¢ã³ããã¹ãã¼ã«ã¢ã³ããå
èµããä½æ¶è²»é»åã® 32bit ã¹ãã¬
㪠CODEC ã§ããå
¥åã«ã¯ãã¤ã¯ã¢ã³ãåã³ ALC(Automatic Level Control) åè·¯ãå
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ããã¬ã¹ããããã©ã³ã¢ã³ãåã³ã¹ãã¼ã«ã¢ã³ããå
èµãã¦ãããé²åæ©è½ä»ããã¼ã¿ãã«æ©å¨ç¨éã«
æé©ã§ããããããã©ã³ã¢ã³ãã¯è² é»æºçºçåè·¯ãå
èµãããã¨ã«ãããåºåã® DC ã«ããã³ã³ãã³ãµ
ãä¸è¦ã§ããã¹ãã¼ã«ã¢ã³ã㯠0.9V ~ 5.5V ã®å¹
åºãé»æºé»å§åä½ãå®ç¾ããç´æ¥é»æ± ã«æ¥ç¶ãããã¨
ãå¯è½ã§ããã¾ããããã±ã¼ã¸ã¯å°åã® QFN (4 x 4mm, 0.4mm pitch) ãæ¡ç¨ãå¾æ¥ 2~3 ãããã§æ§æ
ãããã·ã¹ãã ã¨æ¯è¼ãã¦å®è£
é¢ç©ã大å¹
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1. é²é³å´æ©è½
⢠2 系統ã®ä½ãã¤ãºãã¤ã¯ãã¯ã¼å
èµ
⢠3 系統ã®ã»ã¬ã¯ã¿å
èµã¹ãã¬ãªã·ã³ã°ã«ã¨ã³ãå
¥å
⢠ä½ãã¤ãºãã¤ã¯ã¢ã³ãå
èµ (+26dB/+20dB/+13dB/+6dB/0dB)
⢠Digital ALC (Automatic Level Control) åè·¯å
èµ
(Setting Range: +36dB ~ â52.5dB, 0.375dB Step)
⢠ADC ç¹æ§: S/(N+D): 88dB, DR, S/N: 97dB (MIC-Amp=+20dB)
S/(N+D): 88dB, DR, S/N: 100dB (MIC-Amp=0dB)
⢠2 種é¡ã® Decimation Filter
⢠ãªã¼ãã¼ããã¼æ¤åº
⢠風åãé³ãã£ã«ã¿
⢠ã¹ãã¬ãªæ強調åè·¯
⢠5 段ã®ããããã£ã«ã¿
⢠Digital MIC Interface å
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2. åçå´æ©è½
⢠Digital ALC (Automatic Level Control) åè·¯å
èµ
(Setting Range: +36dB ~ â52.5dB, 0.375dB Step)
⢠3-band ãã¤ãããã¯ã¬ã³ã¸ã³ã³ããã¼ã«åè·¯
⢠ãã£ã¸ã¿ã«ããªã¥ã¼ã å
èµ (+6dB ~ â65.5dB, 0.5dB Step, Mute)
⢠ãã£ããã¬ã¹ã¹ãã¬ãªããããã©ã³ã¢ã³ãå
èµ
- HP-AMP ç¹æ§: S/(N+D): 65dB@20mW, S/N: 100dB
- å®æ ¼åºå: 20mW@16Ω
- é»æº ON/OFF æã¯ãªãã¯ãã¤ãºããªã¼
⢠ã¢ãã©ã«ã¹ãã¼ã«ã¢ã³ãå
èµ(ã¹ãã¬ãªã©ã¤ã³åºååæ¿ãæ©è½)
- SPK-AMP ç¹æ§: S/(N+D): 70dB@250mW, Output Noise Level: -97dBV
- BTL æ¥ç¶
- å®æ ¼åºå: 400mW@8Ω (SVDD=3.3V)
100mW@8Ω (SVDD=1.5V)
⢠Beep é³çææ©è½å
èµ
3. ãã¯ã¼ããã¸ã¡ã³ãæ©è½
MS1542-J-00-PB
-1-
2013/06
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