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AK5730VQ_17 Datasheet, PDF (29/50 Pages) Asahi Kasei Microsystems – 4-Channel Differential Audio ADC for Line & Mic Inputs | |||
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[AK5730]
(C) Booster Input Mode (LIN*1-0 bits = â10â)
æ¨æºã®è»è¼ãã¯ã¼ã¢ã³ã(ã¯ã©ã¹ABãã¯ã©ã¹SB(I)ãã¯ã©ã¹Dã§ã) ããã®ç´æ¥å
¥åã«å¯¾å¿ãã¾ããããã¤ã¹ã¸ã®æ¥ç¶ã¯å
¨
ã¦ãåè¡¡ã«ãªãããã«ãã¦ãã ãããã¯ã©ã¹SB(I)ã¢ã³ãã使ç¨ããå ´åãããªãã¸ããã·ã³ã°ã«ã¨ã³ãã¢ã¼ããã¾ãã¯ãã®
éã«åãæ¿ãããããå
¥åé»å§ã¯ãªã¼ãã£ãªå¸¯åå¹
å
ã«ã³ã¢ã³ã¢ã¼ãä¿¡å·ãå«ã¿ã¾ããBooster Input Mode ã¯ä»ã¿ã¤
ãã®å
¥åä¿¡å· (LINE, Phone, Microphone)ã«ã対å¿ã§ãã¾ãã
é
ç®
Input voltage typ.
Input voltage max.
ä»æ§
10.0V RMS
11.7V RMS
Table 13. Booster Input Mode
説æ
@ battery voltage <14.4V
@ battery voltage =16.5V
Power Amp
VBAT
AMP
R1
R3
R2
Mic
Bias,
CP
IN*P
IN*N
Figure 26. Booster Input Mode (IN*P/N pins)
å¤ä»ãã®ã¢ã³ãæ¥ç¶ç¶æ
ãæ¤åºãã¾ããå
¥åã¯ã¢ã³ãã®åºåã«æ¥ç¶ããã¾ã(VDC+ = VDC- = VBAT/2)ããã©ã«ãã³
ã³ãã£ã·ã§ã³ã«ã¤ãã¦ã¯Note 25 㨠Figure 27 ãåç
§ãã¦ãã ãããSARã®Threshold B ã¨C (THB12-01 bits, THC12-01
bits) ãåºæºã«ã㦠âå
¥åã®ãªã¼ãã³ã¹ãã¼ãâ ((R2+R3)/(R1+R2+R3) * Vbias) 㨠(R2/(R1+R2+R3) * Vbias) ãæ¤åºã
ã¾ããThreshold B/Cã¯11V(Typ.)ããã«ã¹ã±ã¼ã«ã¨ãã12bit ã®ã¹ãã¬ã¼ããã¤ããªã³ã¼ãã§ãã
ãã©ã«ãã³ã³ãã£ã·ã§ã³
æ¡ä»¶
ãã¸ãã£ãå
¥åãªã¼ãã³ (R2+R3)/(R1+R2+R3) * Vbias âVth ⤠VDC+ ⤠(R2+R3)/(R1+R2+R3) * Vbias +Vth
ãã¬ãã£ãå
¥åãªã¼ãã³ R2/(R1+R2+R3) * Vbias â Vth ⤠VDC- ⤠R2/(R1+R2+R3) * Vbias + Vth
Note 25. ãã¸ãã£ã/ãã¬ãã£ãå
¥åãªã¼ãã³ã¯ç¡ä¿¡å·æãåã¯DCé»å§ãä¾çµ¦ããã¦ããªãç¶æ
ã§ã®ãã©ã«
ãã³ã³ãã£ã·ã§ã³ã§ãã
Table 14. ãã©ã«ãã³ã³ãã£ã·ã§ã³ (Booster Input Mode)
Power Amp
Vbias
VBAT
AMP
R1
R3
R2
Mic
Bias,
CP
INM*P
INM*N
Figure 27. Booster Input Mode (INM*P/N pins)
MS1577-J-03
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2015/11
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