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AK5730VQ_17 Datasheet, PDF (28/50 Pages) Asahi Kasei Microsystems – 4-Channel Differential Audio ADC for Line & Mic Inputs | |||
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[AK5730]
(B) LINE and Phone Input Mode (LIN*1-0 bits = â01â)
Stereo Line Input ã¯æ¬ä¼¼å·®åå
¥åã«ãªãã¾ããLineã®å¸°ç·ã¨Phone ã®å¸°ç·ãããã¦ãããã¦ãããã®ã°ã©ã³ãã¯ãããã
å¥ã
ã«ãã¦ãã ããã2ã¤ã®Stereo Line Inputããããã¯1ã¤ã®Stereo Line Input +ï¼ã¤ã®Phone Input ã®çµã¿åãããå¯è½
ã§ãã
é
ç®
Stereo Line Input Voltage
Phone Input Voltage
ä»æ§
説æ
1 - 3V RMS
(ã·ã¹ãã ã®ä»æ§ã«ããã¾ã)
0.1 - 3V RMS
(ã·ã¹ãã ã®ä»æ§ã«ããã¾ã)
Table 11. LINE and Phone Input Mode
LINE or Phone
R2
R1
AC
R2
Mic
Bias,
CP
IN*P
IN*N
Figure 24. LINE and Phone Input Mode (IN*P/N pins)
ãã©ã«ãã³ã³ãã£ã·ã§ã³ã«ã¤ãã¦ã¯ Table 12 㨠Figure 25ãåç
§ãã¦ãã ããã âãã¸ãã£ãå
¥åã¨ãã¬ãã£ãå
¥åã®ã·ã§
ã¼ã (R2/(2R1+R2)) * Vbiasâ ã¯SARã®Threshold Aãåºæºã«æ¤åºããã¾ããThreshold Aã¯11Vããã«ã¹ã±ã¼ã«ã¨ãã
12bitã®ã¹ãã¬ã¼ããã¤ããªã³ã¼ãã§ãã
ãã©ã«ãã³ã³ãã£ã·ã§ã³
æ¡ä»¶
VBATã¸ã®ãã¸ãã£ã/ãã¬ãã£ãå
¥åã·ã§ã¼ã VDC+/- ⥠Vbias + Vth
GNDã¸ã®ãã¸ãã£ã/ãã¬ãã£ãå
¥åã·ã§ã¼ã
VDC+/- ⤠Vth
ãã¸ãã£ãå
¥åã¨ãã¬ãã£ãå
¥åã®ã·ã§ã¼ã
R2/(2R1+R2) * Vbias âVth ⤠VDC+ â
VDC- ⤠R2/(2R1+R2) * Vbias + Vth
ãã¸ãã£ãå
¥åãªã¼ãã³
Vbias - Vth ⤠VDC+ ⤠Vbias + Vth
ãã¬ãã£ãå
¥åãªã¼ãã³
VDC+/- ⤠Vth
Note 23. âGNDã¸ã®ãã¸ãã£ã/ãã¬ãã£ãå
¥åã·ã§ã¼ãâã¨âãã¬ãã£ãå
¥åãªã¼ãã³âã¯åºå¥ãã¤ãã¾ããã
Note 24. âãã¸ãã£ãå
¥åã¨ãã¬ãã£ãå
¥åã®ã·ã§ã¼ãâ ã¯ç¡ä¿¡å·æãåã¯DCé»å§ãä¾çµ¦ããã¦ããªãç¶æ
ã§
ã®ãã©ã«ãã³ã³ãã£ã·ã§ã³ã§ãã
Table 12. ãã©ã«ãã³ã³ãã£ã·ã§ã³ (LINE and Phone Input Mode)
LINE or Phone
Vbias
R2
AC
R1
VDC+
VDC-
Mic
Bias,
CP
INM*P
INM*N
Figure 25. LINE and Phone Input Mode (IN*MP/N pins)
MS1577-J-03
- 28 -
2015/11
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