{"id":4268,"date":"2015-04-29T12:22:57","date_gmt":"2015-04-29T03:22:57","guid":{"rendered":"https:\/\/y2tech.net\/blog\/?p=4268"},"modified":"2016-06-22T08:17:42","modified_gmt":"2016-06-21T23:17:42","slug":"inside-da-300usb","status":"publish","type":"post","link":"https:\/\/y2tech.net\/blog\/d-i-y\/inside-da-300usb-4268\/","title":{"rendered":"DA-300USB\u306e\u5185\u90e8\u3092\u8997\u3044\u3066\u307f\u305f"},"content":{"rendered":"

DENON DA-300USB\u306e\u5185\u90e8\u3092\u958b\u3051\u3066\u3001\u96fb\u6e90\u5efb\u308a\u306a\u3069\u3092\u8abf\u3079\u3066\u307f\u305f<\/h3>\r\n
\r\n
\r\n\"Inside
DA-300USB\u306e\u5185\u90e8\u306fDAC\u30e1\u30a4\u30f3\u30dc\u30fc\u30c9\u3068\u30c7\u30b8\u30bf\u30eb\u51e6\u7406\u7cfb\u306e\u30c9\u30fc\u30bf\u30ab\u30fc\u30c9\u306e2\u5c64\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u308b
\u30d7\u30e9\u30b9\u30c1\u30c3\u30af\u7b50\u4f53\u306e\u4e0a\u4e0b\u306b\u306f3mm\u539a\u306e\u9244\u677f\u3092\u91cd\u308a\uff1f\u3068\u3057\u3066\u4ed8\u3051\u3066\u3042\u308b<\/span>\r\n
\r\n
\r\n\"DAC
DAC\u30e1\u30a4\u30f3\u30dc\u30fc\u30c9\u3068USB\/SPDIF DIR\u3068DSP,ARM\u30de\u30a4\u30b3\u30f3\u306e\u30c7\u30b8\u30bf\u30eb\u51e6\u7406\u7cfb\u30c9\u30fc\u30bf\u30fc\u30ab\u30fc\u30c9<\/span>\r\n
\r\n
\r\n\"PCB
\u30c7\u30b8\u30bf\u30eb\u30ab\u30fc\u30c9\u88cf\u5074\u306b\u306fARM\u30de\u30a4\u30b3\u30f3\u30c1\u30c3\u30d7\u3001DAC\u30ab\u30fc\u30c9\u306e\u30b0\u30e9\u30f3\u30c9\u30e9\u30a4\u30f3\u306e\u30d1\u30bf\u30fc\u30f3\u5206\u96e2\u306e\u69d8\u5b50\u304c\u826f\u304f\u5206\u304b\u308b<\/span>\r\n
\r\n
\r\n\"Digital
\u30c7\u30b8\u30bf\u30eb\u51e6\u7406\u7cfb\u30c9\u30fc\u30bf\u30fc\u30ab\u30fc\u30c9\u306b\u306f DSP(TI TMS320)\u30c1\u30c3\u30d7\u3001FPGA(ALTERA 4CE15F17)\u30c1\u30c3\u30d7\u3001
DIR(TI PCM9211\uff09\u30c1\u30c3\u30d7\u304c\u642d\u8f09\u3055\u308c\u3066\u3044\u308b<\/span>\r\n
\r\n
\r\n<\/div>\r\n
\r\n

DENON DA-300USB\u3092\u66ab\u304f\u4f7f\u3063\u3066\u307f\u308b\u3068\u3001\u3084\u306f\u308a\u8272\u3005\u3068\u4e0d\u6e80\u304c\u51fa\u3066\u304f\u308b\uff0e\u5b89\u7269\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0AC\u30a2\u30c0\u30d7\u30bf\u65b9\u5f0f\u306e\u96fb\u6e90\u4f9b\u7d66\u306a\u3069\u306f\u8ad6\u5916\u3068\u3057\u3066\u3001\u30b1\u30fc\u30b9\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u512a\u5148\u3055\u305b\u3066\u3057\u307e\u3063\u305f\u305b\u3044\u304b\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u96fb\u6e90\u4f9b\u7d66\u65b9\u5f0f\u306b\u554f\u984c\u304c\u3042\u308b\u3088\u3046\u3060\uff0e\u4eca\u56de\u306fDA-300USB\u306e\u5185\u90e8\u3092\u958b\u3051\u3066\u3001\u96fb\u6e90\u5468\u308a\u3084\u5168\u4f53\u306e\u56de\u8def\u69cb\u6210\u3084\u4f7f\u7528\u3057\u3066\u3044\u308bIC\u30c1\u30c3\u30d7\u306a\u3069\u306e\u60c5\u5831\u3092\u7c21\u5358\u306b\u7d39\u4ecb\u3057\u3066\u304a\u304f\uff0e<\/p>\r\n
\r\n

\u524d\u56de\u306f\u3001DA-300USB\u306e\u7b50\u4f53\u306e\u69cb\u9020\u304c\u826f\u304f\u5206\u304b\u3089\u305a\u3001\u4e2d\u3092\u958b\u3051\u3066\u69d8\u5b50\u3092\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u306a\u304b\u3063\u305f\u304c\u3001\u4eca\u56de\u306f\u7b50\u4f53\u3092\u58ca\u3059\u899a\u609f\u3067\u601d\u3044\u5207\u3063\u3066\u3053\u3058\u958b\u3051\u3066\u307f\u305f\u3089\u3001\u9ed2\u3044\u30d5\u30ed\u30f3\u30c8\u306e\u5316\u7ca7\u30d1\u30cd\u30eb\u3055\u3078\u4e0a\u624b\u304f\u53d6\u308a\u5916\u305b\u308c\u3070\u3001\u3042\u3068\u306f\u5185\u5074\u306e\u30d5\u30ed\u30f3\u30c8\u30d1\u30cd\u30eb\u306e\u30cd\u30b8\u3092\u5916\u3059\u3060\u3051\u3068\u3044\u3046\u610f\u5916\u306b\u7c21\u5358\u306a\u7b50\u4f53\u306e\u69cb\u9020\u3060\u3063\u305f\uff0e\u5316\u7ca7\u7528\u306e\u30d5\u30ed\u30f3\u30c8\u30d1\u30cd\u30eb\u304c\u7c98\u7740\u8cea\u306e\u63a5\u7740\u5264\u3067\u3079\u3063\u305f\u308a\u3068\u5185\u5074\u306e\u30d5\u30ed\u30f3\u30c8\u30d1\u30cd\u30eb\u306b\u304f\u3063\u3064\u3044\u3066\u3044\u308b\u306e\u3067\u3001\u30cd\u30b8\u306e\u6709\u308a\u304b\u304c\u5224\u3089\u305a\u306b\u82e6\u52b4\u3057\u3066\u3044\u305f\u3060\u3051\u3060\u3063\u305f\uff0e<\/p>\r\n
\r\n

DA-300USB\u3092\u4f7f\u3063\u3066\u3044\u3066\u3001\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u65b9\u5f0f\u306e\u96fb\u6e90\u306b\u53d6\u308a\u66ff\u3048\u3066\u3082\u97f3\u8cea\u7684\u306b\u30a4\u30de\u30a4\u30c1\u3060\u3063\u305f\u306e\u3067\u3001DA-300USB\u306e\u5185\u90e8\u306e\u96fb\u6e90\u5468\u308a\u306e\u8a2d\u8a08\u304c\u6c17\u306b\u306a\u3063\u3066\u3044\u305f\uff0e\u5916\u90e8\u304b\u3089\u306eDC+15V\u306e\u5358\u4e00\u96fb\u6e90\u4f9b\u7d66\u3068\u3044\u3046\u3053\u3068\u304b\u3089\u3001\u6050\u3089\u304f\u5185\u90e8\u3067DC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u3084\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306b\u3088\u308b\u964d\u5727\u3092\u3057\u3066\u304a\u308a\u3001\u5916\u90e8\u96fb\u6e90\u306e\u30ed\u30fc\u30ce\u30a4\u30ba\u5316\u306e\u52b9\u679c\u304c\u8584\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u61f8\u5ff5\u3057\u3066\u3044\u305f\uff0e\u6298\u89d2\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u65b9\u5f0f\u306b\u3088\u308b\u30ce\u30a4\u30ba\u306e\u5c11\u306a\u3044\u96fb\u6e90\u3092\u4f9b\u7d66\u3057\u3066\u3082\u3001\u5185\u90e8\u3067\u30ce\u30a4\u30ba\u767a\u751f\u6e90\u3067\u3042\u308bDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u30ce\u30a4\u30ba\u304c\u52a0\u308f\u3063\u3066\u3057\u307e\u3063\u305f\u306e\u3067\u306f\u3001\u6298\u89d2\u306e\u82e6\u52b4\u304c\u6c34\u306e\u6ce1\u3060\uff0e<\/p>\r\n
\r\n

\u4eca\u56de\u3001DA-300USB\u306e\u5185\u90e8\u306e\u96fb\u6e90\u4f9b\u7d66\u65b9\u5f0f\u3092\u8abf\u3079\u3066\u307f\u3066\u6b63\u76f4\u9a5a\u3044\u305f\uff0eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u96fb\u6e90\u51fa\u529b\u3092\u305d\u306e\u307e\u307e\u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u3067\u964d\u5727\u3057\u3066\u30a2\u30ca\u30ed\u30b0\u7cfb\u306b\u4f7f\u7528\u3057\u3066\u3044\u308b\u3068\u306f\u601d\u3063\u3066\u3082\u307f\u306a\u304b\u3063\u305f\uff0eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u3092\u4f7f\u3046\u304f\u3089\u3044\u306a\u3089\u3001\u30b7\u30e3\u30f3\u30c8\u578b\u306e\u96fb\u6e90\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306b\u3088\u308b\u964d\u5727\u3057\u305f\u5358\u96fb\u6e90\u65b9\u5f0f\u306e\u65b9\u304c\u307e\u3060\u6551\u3044\u3088\u3046\u304c\u3042\u308b\uff0e\u30d0\u30c3\u30c6\u30ea\u30fc\u99c6\u52d5\u306e\u30dd\u30fc\u30bf\u30d6\u30eb\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30a2\u30f3\u30d7\u306e USB DAC\u3067\u306fDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u4f7f\u7528\u306f\u4ed5\u65b9\u304c\u7121\u3044\u3068\u3057\u3066\u3082\u3001\u30dd\u30fc\u30bf\u30d6\u30eb\u3067\u3082\u306a\u3044\u636e\u3048\u7f6e\u304d\u578b\uff1f\u306eDA-300USB\u3067DC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u3092\u4f7f\u3046\u306a\u3069\u3068\u306f\u3068\u3093\u3067\u3082\u306a\u3044\u611a\u884c\u3060\u308d\u3046\uff0e\u898b\u304b\u3051\u4e0a\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u512a\u5148\u3055\u305b\u308b\u4f59\u308a\u3001\u97f3\u8cea\u3092\u72a0\u7272\u306b\u3057\u3066\u5916\u90e8\u306eAC\u30a2\u30c0\u30d7\u30bf\u65b9\u5f0f\u3092\u63a1\u7528\u3057\u305f\u3068\u3044\u3046\u306e\u304c\u672c\u5f53\u306e\u6240\u3060\u308d\u3046\u304b\uff0e\u30c7\u30b6\u30a4\u30f3\u306e\u672c\u8cea\u3092\u306f\u304d\u9055\u3048\u3066\u3044\u308b\u3068\u3057\u304b\u601d\u3048\u306a\u3044\uff0e<\/p>\r\n
\r\n

DC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u96fb\u6e90\u51fa\u529b\u306f\u5f53\u7136\u306a\u304c\u3089\u30ce\u30a4\u30ba\u307e\u307f\u308c\u3067\u3042\u308b\u4e8b\u306f\u8a00\u3046\u307e\u3067\u3082\u306a\u3044\uff0e\u8a66\u3057\u306b+5V\u306e\u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u306e\u5165\u529b\u5074\u3068\u51fa\u529b\u5074\u306e\u6ce2\u5f62\u3092\u89b3\u5bdf\u3057\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u305f\uff0e<\/p>\r\n
\r\n

\r\n\"PCB<\/a>
\r\n\u5927\u307e\u304b\u306a\u57fa\u677f\u306e\u30ec\u30a4\u30a2\u30a6\u30c8<\/span>\r\n
\r\n
\r\n<\/div>\r\n
\r\n
\r\n\"DC\/DC<\/a>
\r\n\u5165\u529b\u3055\u308c\u305f DC +15V \u3092+\/- 11V\u7a0b\u5ea6\u306eDC\u6b63\u8ca0\u96fb\u6e90\u306b\u5909\u63db\u3059\u308b DC\/DC \u30b3\u30f3\u30d0\u30fc\u30bf\u30e2\u30b8\u30e5\u30fc\u30eb<\/span>\r\n
\r\n
\r\n\"DC-DC
+5V \u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\uff087805\uff09\u306e\u5165\u529b\u7aef\u5b50\u5074\u306e\u30ce\u30a4\u30ba\u6ce2\u5f62[ 20mV\/div ]<\/span>\r\n
\r\n
\r\n\"
+5V \u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\uff087805\uff09\u306e\u51fa\u529b\u7aef\u5b50\u5074\u306e\u30ce\u30a4\u30ba\u6ce2\u5f62
[ 2mV\/div \uff08\u611f\u5ea6\u306f\u4e0a\u8a18\u306e10\u500d\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\uff01\uff09]<\/span>\r\n
\r\n
\r\n\"Remove
\u7d50\u5c40\u6709\u5bb3\u306aDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306f\u53d6\u308a\u5916\u3057\u3066\u3001DC\u96fb\u6e90\u3092\u5916\u90e8\u304b\u3089\u4f9b\u7d66\u3067\u304d\u308b\u3088\u3046\u306b\u5909\u66f4\u3059\u308b\u4e8b\u306b\u3057\u305f<\/span>\r\n
\r\n<\/div>\r\n
\r\n

\u30e1\u30a4\u30f3\u306eDAC\u30e2\u30b8\u30e5\u30fc\u30eb\u306f\u4e00\u898b\u3059\u308b\u3068\u90e8\u54c1\u304c\u6ca2\u5c71\u4e26\u3093\u3067\u3044\u3066\u8907\u96d1\u305d\u3046\u306b\u898b\u3048\u308b\u304c\u3001\u5168\u4f53\u306e\u30ec\u30a4\u30a2\u30a6\u30c8\u306f\u81f3\u3063\u3066\u30b7\u30f3\u30d7\u30eb\u3060\uff0e\u3053\u306e\u4e2d\u3067\u76ee\u3092\u5f15\u304f\u306e\u306f\u30c7\u30b8\u30bf\u30eb\u30a2\u30a4\u30bd\u30ec\u30fc\u30bfADuM1285\u30929\u500b\u4e26\u3079\u3066\u30c7\u30b8\u30bf\u30eb\u90e8\u306e\u4fe1\u53f7\u3092DC\u7684\u306b\u7d76\u7e01\u3057\u3066\u3044\u308b\u90e8\u5206\u3068\u3001\u9ec4\u8272\u3044\u30c8\u30e9\u30f3\u30b9\u304c\u76ee\u7acb\u3064DC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u30e2\u30b8\u30e5\u30fc\u30eb\u3060\uff0e<\/p>\r\n
\r\n

\u30c7\u30b8\u30bf\u30eb\u90e8\u306e\u30c9\u30fc\u30bf\u30fc\u30ab\u30fc\u30c9\u306b\u5165\u529b\u3055\u308c\u305f\u3001\u5916\u90e8\u304b\u3089\u306eDC+15V\u96fb\u6e90\u306f38P\u306e\u30b3\u30cd\u30af\u30bf\u3092\u901a\u3057\u3066\u3001DAC\u30e2\u30b8\u30e5\u30fc\u30eb\u30ab\u30fc\u30c9\u306b\u4f9b\u7d66\u3055\u308c\u3001\u3053\u306eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306b\u3088\u3063\u3066+\/- 11V\u7a0b\u5ea6\u306e\u6b63\u8ca0\u96fb\u6e90\u304c\u4f5c\u3089\u308c\u308b\uff0e\u3053\u306e\u6b63\u8ca0\u96fb\u6e90\u30927809\/7909\u306e\u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u3067 +\/- 9V\u306e\u30a2\u30ca\u30ed\u30b0\u90e8\u306eOP\u30a2\u30f3\u30d7\u306b\u4f9b\u7d66\u3059\u308b\uff0e\u540c\u3058\u304fDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u6b63\u5074\u51fa\u529b\u304b\u30897805\u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u3092\u4ecb\u3057\u3066+5V\u7cfb\u306e\u96fb\u6e90\u3092\u3001AP1117\u3068\u3044\u3046\u30ec\u30ae\u30e5\u30ec\u30fc\u30bfIC\u30673.3V\u7cfb\u306e\u96fb\u6e90\u30922\u7cfb\u7d71\u4f5c\u308a\u51fa\u3057\u3066\u3044\u308b\uff0eDAC\u306e\u96fb\u6e90\u3068\u3057\u3066\u306f\u901a\u5e38+5V\u3068+3.3V\u306e\u30a2\u30ca\u30ed\u30b0\u7cfb\u3001+3.3V\u306e\u30c7\u30b8\u30bf\u30eb\u7cfb\u306a\u306e\u3067\u30017805\u3068AP117\u3067\u3053\u308c\u3089\u306e\u96fb\u6e90\u3092\u4f9b\u7d66\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308b\uff0e<\/p>\r\n
\r\n

DA-300USB\u306e\u96fb\u6e90\u5468\u308a\u3092\u6539\u5584\u3059\u308b\u306b\u306f\u3001\u3053\u306eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u3092\u53d6\u3063\u6255\u3063\u3066\u30ed\u30fc\u30ce\u30a4\u30ba\u306a +\/- 12V\u96fb\u6e90\u3092\u4f9b\u7d66\u3059\u308b\u306e\u304c\u826f\u3055\u305d\u3046\u3060\uff0e\u4e09\u7aef\u5b50\u30ec\u30ae\u30e5\u30ec\u30fc\u30bf\u81ea\u4f53\u306e\u30ce\u30a4\u30ba\u304c\u6c17\u306b\u306a\u308b\u3068\u3044\u3046\u306e\u3067\u3042\u308c\u3070\u3001+\/- 9V, +5V, +3.3V \u306e\u96fb\u6e90\u3092\u500b\u5225\u306b\u76f4\u63a5\u4f9b\u7d66\u3059\u308b\u3068\u3044\u3046\u306e\u3082\u6709\u308a\u3060\u308d\u3046\uff0eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u306e\u96fb\u5727\u3092\u5b9f\u6e2c\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u5165\u529b\u5074\u304c +14.88V\u3067\u3001\u51fa\u529b\u5074\u306f +10.78V\/-11.12V \u3060\u3063\u305f\uff0e<\/p>\r\n
\r\n\r\n

\r\n\"DAC
Burr Brown(TI) \u306e32bit DAC\u30c1\u30c3\u30d7 PCM1795 \u3068IV\u5909\u63db\u7528\u306eBA15218F
\u30a2\u30ca\u30ed\u30b0\u51fa\u529b\u7528\u306eOP\u30a2\u30f3\u30d7NJM8068\u3068I2C\u5236\u5fa1\u306e\u30a2\u30ca\u30ed\u30b0\u96fb\u5b50\u30dc\u30ea\u30e5\u30fc\u30e0NJU72341<\/span>\r\n
\r\n
\r\n\"Pin
\u30b3\u30cd\u30af\u30bf\u306e\u30d4\u30f3\u306b\u95a2\u3059\u308b\u8aac\u660e\u304c\u57fa\u677f\u4e0a\u306b\u30b7\u30eb\u30af\u5370\u5237\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001
\u81ea\u5206\u3067\u597d\u307f\u306eDAC\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u3064\u306a\u3050\u3053\u3068\u3082\u53ef\u80fd\u3060\u308d\u3046 <\/span>\r\n
\r\n
\r\n<\/div>\r\n
\r\n

\u3053\u306e\u88fd\u54c1\u306f DSD128 \/ PCM 384KHz \u5bfe\u5fdc\u3092\u4e00\u3064\u306e\u58f2\u308a\u306b\u3057\u3066\u3044\u308b\u306e\u3067\u300132bit\u306eDAC\u30c1\u30c3\u30d7\u3067\u3042\u308b PCM1795\u3092\u7528\u3044\u3066\u3044\u308b\u304c\u3001\u97f3\u8cea\u7684\u306b\u306f24bit\u306ePCM1792\u306e\u65b9\u304c\u512a\u308c\u3066\u3044\u308b\u3068\u3044\u3046\u306e\u306f\u4e16\u9593\u4e00\u822c\u306e\u8a55\u4fa1\u3060\u308d\u3046\uff0eAL32\u30d7\u30ed\u30bb\u30c3\u30b7\u30f3\u30b0\u3068\u3044\u304632bit\u306e\u88dc\u5b8c\u6280\u8853\u3092\u6700\u5927\u306e\u58f2\u308a\u306b\u3057\u3066\u3044\u308b\u4ee5\u4e0a\u3001\u97f3\u8cea\u7684\u306b\u306f\u52a3\u308bPCM1795\u3057\u304b\u9078\u629e\u80a2\u304c\u306a\u304b\u3063\u305f\u3068\u3044\u3046\u3068\u3053\u308d\u3060\u308d\u3046\u304b\uff0e\u30c7\u30a3\u30b8\u30bf\u30eb\u30aa\u30fc\u30c7\u30a3\u30aa\u306b\u3042\u307e\u308a\u8a73\u3057\u304f\u306a\u3044\u4eba\u9054\u306b\u58f2\u308a\u3064\u3051\u308b\u306b\u306f\u3001\u3069\u3046\u3057\u3066\u308232bit DAC\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u4e8b\u3092\u7a4d\u6975\u7684\u306b\u30a2\u30d4\u30fc\u30eb\u3057\u305f\u3044\u306e\u3060\u308d\u3046\uff0e<\/p>\r\n
\r\n

DA-300USB\u306e\u9ad8\u97f3\u8cea\u5316\u8a08\u753b\u3068\u3057\u3066\u306f\u3001\u5148\u305a\u306f\u52a3\u60aa\u306a\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0AC\u30a2\u30c0\u30d7\u30bf\u3092\u96fb\u6e90\u30c8\u30e9\u30f3\u30b9\u65b9\u5f0f\u306e\u30ed\u30fc\u30ce\u30a4\u30ba\u96fb\u6e90\u306b\u4ea4\u63db\u3059\u308b\u306e\u304c\u6700\u521d\u3067\u3001\u6b21\u306b\u5185\u90e8\u306eDC\/DC\u30b3\u30f3\u30d0\u30fc\u30bf\u3092\u53d6\u308a\u6255\u3063\u3066\u3001\u4ee3\u308f\u308a\u306b +\/- 12V\u306e\u96fb\u6e90\u3092\u4f9b\u7d66\u3059\u308b\u304b\u3001DAC\u30c1\u30c3\u30d7\u3084OP\u30a2\u30f3\u30d7\u7528\u306a\u3069\u500b\u5225\u306b\u96fb\u6e90\u3092\u4f9b\u7d66\u3059\u308b\u3053\u3068\u3060\u308d\u3046\uff0e\u305d\u308c\u3067\u3082\u97f3\u8cea\u304c\u6c17\u306b\u5165\u3089\u306a\u3044\u306e\u3067\u3042\u308c\u3070\u3001DAC\u90e8\u5206\u304b\u3089\u5f8c\u3092\u5b8c\u5168\u306b\u81ea\u5206\u597d\u307f\u306eDAC\u30e2\u30b8\u30e5\u30fc\u30eb\u3084OP\u30a2\u30f3\u30d7\u3067\u7f6e\u304d\u63db\u3048\u3066\u3057\u307e\u3046\u3068\u3044\u3046\u7a76\u6975\u306e\u624b\u6bb5\u3082\u6709\u308a\u3060\u308d\u3046\uff0e\u8981\u306f\u3001DA-300USB\u306e\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u90e8\u5206\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3060\u3051\u3042\u308c\u3070\u5341\u5206\u3068\u3044\u3046\u3053\u3068\u3060\u308d\u3046\u304b\uff0e\u307e\u3042\u3001\u3053\u306e\u5185\u5bb9\u30674\u301c5\u4e07\u5186\u7a0b\u5ea6\u3067\u8cfc\u5165\u3067\u304d\u308b\u306e\u3067\u30b3\u30b9\u30c8\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u7684\u306b\u306f\u6e80\u8db3\u306a\u306e\u3060\u304c\uff0e\uff0e\uff0e<\/p>\r\n
\r\n

DA-300USB\u3067\u7528\u3044\u3089\u308c\u3066\u3044\u308bDAC\u30c1\u30c3\u30d7 PCM1795 \u306fPCM1792\u3068\u30d4\u30f3\u30b3\u30f3\u30d1\u30c1\u30d6\u30eb\u304b\u3064\u30e2\u30fc\u30c9\u5236\u5fa1\u306e\u4ed5\u7d44\u307f\u304c\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u304cTI\u306e\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\uff0e\u3064\u307e\u308aPCM1795\u3092\u53d6\u308a\u306f\u305a\u3057\u3066PCM1792\u306b\u4ed8\u3051\u66ff\u3048\u308b\u4e8b\u304c\u53ef\u80fd\u3068\u3044\u3046\u4e8b\u3060\u308d\u3046\uff0e\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u30e2\u30b8\u30e5\u30fc\u30eb\u304b\u3089\u306f32bit\u306ePCM\u30c7\u30fc\u30bf\u304c\u9001\u3089\u308c\u3066\u304f\u308b\u306e\u3067\u3001\u30c7\u30fc\u30bf\u5f62\u5f0f\u304cI2S\u4ee5\u5916\u306e\u5834\u5408\u306f32bit\u30c7\u30fc\u30bf\u309224bit\u306b\u4e0a\u624b\u304f\u843d\u3068\u3057\u8fbc\u307e\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u304c\u3001I2S\u5f62\u5f0f\u306e\u4fe1\u53f7\u3067\u3042\u308c\u3070\u6700\u521d\u304b\u3089\u4f55\u3082\u3057\u306a\u304f\u3066\u3082\u305d\u306e\u307e\u307e\u4e0a\u4f4d24bit\u306e\u4fe1\u53f7\u3092DAC\u304c\u53d6\u308a\u8fbc\u3093\u3067\u304f\u308c\u308b\u3060\u308d\u3046\uff0e\u5c24\u3082DAC\u30c1\u30c3\u30d7\u3060\u3051PCM1792\u306b\u53d6\u308a\u66ff\u3048\u305f\u3068\u3053\u308d\u3067\u3001\u5f8c\u6bb5\u306e\u30a2\u30ca\u30ed\u30b0\u51e6\u7406\u7cfb\u306eOP\u30a2\u30f3\u30d7\u306a\u3069\u3082\u53d6\u308a\u66ff\u3048\u305f\u304f\u306a\u308b\u306e\u3067\u3001\u6700\u521d\u304b\u3089PCM1792\u3067\u7d44\u307e\u308c\u305f\u304a\u6c17\u306b\u5165\u308a\u306eDAC\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u65b9\u304c\u73fe\u5b9f\u7684\u3060\u308d\u3046\uff0e<\/p>\r\n
\r\n

\u97f3\u8cea\u306e\u5584\u3057\u60aa\u3057\u306f\u5225\u3068\u3057\u3066\u3001DA-300USB\u3092\u4f7f\u3063\u3066\u3044\u3066\u4e00\u756a\u56f0\u308b\u306e\u306f\u5165\u529b\u4fe1\u53f7\u304c\u9014\u5207\u308c\u308b\u3068\u96fb\u6e90\u304c\u52dd\u624b\u306b\u843d\u3061\u308b\u4ed5\u69d8\u3060\u3001\u96fb\u6e90SW\u306e\u9577\u62bc\u3057\u3067\u3053\u306e\u96fb\u6e90\u7bc0\u7d04\u30e2\u30fc\u30c9\u5207\u66ff\u304c\u3067\u304d\u308b\u3088\u3046\u3060\u304c\u3001\u6709\u52b9\uff65\u7121\u52b9\u306e\u3069\u3061\u3089\u306b\u5207\u308a\u66ff\u3048\u3066\u3082\u3044\u3064\u306e\u9593\u306b\u304b\u96fb\u6e90\u304c\u5207\u308c\u3066\u3057\u307e\u3046\uff0e\u3053\u306e\u9593\u629c\u3051\u306a\u4f59\u8a08\u306a\u304a\u7bc0\u4ecb\u6a5f\u80fd\u3092\u5b8c\u5168\u306b\u6bba\u3059\u65b9\u6cd5\u306f\u306a\u3044\u3082\u306e\u3060\u308d\u3046\u304b\uff0e\u30c7\u30b8\u30bf\u30eb\u4fe1\u53f7\u51e6\u7406\u30ab\u30fc\u30c9\u306b\u306f\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u66f8\u304d\u63db\u3048\u7528\u3068\u601d\u3057\u304d\u30b3\u30cd\u30af\u30bf\u304c\u3001\u8868\u3068\u88cf\u306b\uff12\u3064\u4ed8\u3044\u3066\u3044\u308b\u306e\u3067\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u66f8\u304d\u63db\u3048\u306f\u5bb9\u6613\u306a\u7b48\u3060\uff0e\u5c24\u3082PC\u304b\u3089USB\u7aef\u5b50\u7d4c\u7531\u3067\u3082\u30d5\u30a1\u30fc\u30e0\u306e\u66f8\u304d\u63db\u3048\u3082\u3067\u304d\u308b\u306f\u305a\u306a\u306e\u3067\u3001\u30c7\u30b8\u30bf\u30eb\u30ab\u30e1\u30e9\u306e\u3088\u3046\u306b\u30e6\u30fc\u30b6\u304c\u81ea\u5206\u3067\u30d5\u30a1\u30fc\u30e0\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u8cb0\u3044\u305f\u3044\uff0e<\/p>\r\n
\r\n

\u7d50\u5c40\u306e\u3068\u3053\u308d\u3001\u6e80\u8db3\u306e\u3044\u304f\u30c7\u30b8\u30bf\u30eb\u30aa\u30fc\u30c7\u30a3\u30aa\u88c5\u7f6e\u3092\u30ed\u30fc\u30b3\u30b9\u30c8\u3067\u7d44\u3082\u3046\u3068\u3059\u308b\u3068\u3001\u81ea\u4f5c\u4ee5\u5916\u306b\u65b9\u6cd5\u306f\u306a\u3044\u3068\u3044\u3046\u4e8b\u304b\u306a\uff1f<\/p>\r\n
\r\n

\r\n

\u3010\u8ffd\u8a18\u3011DAC\u30c1\u30c3\u30d7\u5efb\u308a\u306e\u56de\u8def\u8a2d\u8a08\u3092\u7c21\u5358\u306b\u8abf\u3079\u3066\u307f\u305f<\/h3>\r\n
\r\n

DA-300USB\u3067\u4f7f\u7528\u3057\u3066\u3044\u308bDAC\u30c1\u30c3\u30d7 PCM1795 \u3092\u540c\u3058BurrBrown(TI)\u306e\u30d4\u30f3\uff06\u30b3\u30de\u30f3\u30c9\u30b3\u30f3\u30d1\u30c1\u30d6\u30eb\u306aDAC\u3067\u3042\u308b PCM1792 \u306b\u7f6e\u304d\u63db\u3048\u308b\u4e8b\u306f\u305d\u308c\u7a0b\u96e3\u3057\u3044\u4e8b\u3067\u306f\u306a\u3044\u3060\u308d\u3046\u304c\u3001ESS\u306eES9018K2M\u3084AK4490\u306a\u3069\u306eDAC\u30c1\u30c3\u30d7\u306b\u7f6e\u304d\u63db\u3048\u308b\u4e8b\u304c\u53ef\u80fd\u304b\u3069\u3046\u304b\u8abf\u3079\u3066\u307f\u308b\u3053\u3068\u306b\u3057\u305f\uff0e<\/p>\r\n
\r\n

\u52ff\u8ad6\u56de\u8def\u56f3\u306a\u3069\u671b\u3080\u3079\u304f\u3082\u306a\u3044\u306e\u3067\u3001\u81ea\u5206\u3067\u57fa\u677f\u4e0a\u306e\u30e9\u30a4\u30f3\u3092\u8ffd\u3044\u304b\u3051\u3066\u884c\u304f\u3057\u304b\u306a\u3044\u306e\u3060\u304c\u3001\u4f8b\u306b\u3088\u3063\u3066\u591a\u5c64\u57fa\u677f\u306a\u306e\u3067\u3001\u30e9\u30a4\u30f3\u3092\u8ffd\u3063\u3066\u884c\u304f\u3053\u3068\u306f\u81f3\u96e3\u306e\u6280\u3060\uff0e\u660e\u78ba\u306b\u8ffd\u3048\u308b\u7b87\u6240\u306f\u5c11\u306a\u304f\u3001\u30c6\u30b9\u30bf\u30fc\u306e\u5c0e\u901a\u30c1\u30a7\u30c3\u30af\u6a5f\u80fd\u3092\u5229\u7528\u3057\u306a\u304c\u3089\u52d8\u3092\u983c\u308a\u306b\u8fbf\u3063\u3066\u884c\u304f\uff0e\u3053\u306e\u3088\u3046\u306a\u6ce5\u7e04\u7684\u306a\u4f5c\u696d\u3092\u7d9a\u3051\u3066\u3088\u3046\u3084\u304f\u5404\u4fe1\u53f7\u30e9\u30a4\u30f3\u306e\u6982\u8981\u304c\u5206\u304b\u3063\u3066\u304d\u305f\uff0e<\/p>\r\n
\r\n

\u4eca\u56de\u306e\u8abf\u67fb\u3067\u3001DA-300USB\u306eDAC\u30e1\u30a4\u30f3\u57fa\u677f\u3067\u306fDAC\u30c1\u30c3\u30d7\u306e\u5236\u5fa1\u306b\u4e00\u822c\u7684\u306aI2C\u3067\u306f\u306a\u304f\u3001SPI\u65b9\u5f0f\u3092\u7528\u3044\u3066\u3044\u308b\u3053\u3068\u304c\u5224\u660e\u3057\u305f\uff0e\u30dc\u30ea\u30e5\u30fc\u30e0\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u7528\u306e\u5c02\u7528IC NJU72341 \u7528\u3068\u3057\u3066I2C\u306b\u3088\u308b\u5236\u5fa1\u30e9\u30a4\u30f3\u3082\u8a2d\u3051\u3089\u308c\u3066\u3044\u308b\u306e\u3067I2C\u3060\u3051\u3067\u3082\u826f\u3055\u305d\u3046\u306a\u6c17\u304c\u3059\u308b\u304c\u3001\u30d8\u30c3\u30c9\u30d5\u30a9\u30f3\u30a2\u30f3\u30d7\u7528\u306e\u30dc\u30ea\u30e5\u30fc\u30e0\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306f\u3001\u30e6\u30fc\u30b6\u304c\u8996\u8074\u4e2d\u306b\u6bd4\u8f03\u7684\u983b\u7e41\u306b\u97f3\u91cf\u3092\u5236\u5fa1\u3059\u308b\u53ef\u80fd\u6027\u3092\u8003\u3048\u3066\u3001\u6562\u3048\u3066DAC\u30c1\u30c3\u30d7\u306e\u5236\u5fa1\u306fSPI\u3092\u7528\u3044\u3066\u5225\u7cfb\u7d71\u306b\u3057\u305f\u306e\u304b\u3082\u3057\u308c\u306a\u3044\uff0e<\/p>\r\n
\r\n

Amanero \u3084 XMOS \u306a\u3069\u306e\u6c4e\u7528\u7684\u306aUSB-DAC\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3067\u306f\u3001DAC\u5074\u3067DSD\/PCM\u306e\u5207\u308a\u66ff\u3048\u308b\u305f\u3081\u306e\u4fe1\u53f7\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u304c\u3001DA-300USB\u306eUSB-DAC\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u90e8\u5206\u306f\u3001Burr Brown(TI) \u306ePCM1795(1792\uff09\u306e\u5236\u5fa1\u30b3\u30de\u30f3\u30c9\u3092\u76f4\u63a5\u5410\u304d\u51fa\u3059\u3088\u3046\u306b\u4f5c\u3089\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u4ed6\u306eDAC\u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u306f\u56f0\u96e3\u3092\u6975\u3081\u305d\u3046\u3060\uff0e\u5c24\u3082\u3001\u81ea\u5206\u3067PCM1795\u7528\u306eSPI\u5236\u5fa1\u4fe1\u53f7\u3092\u89e3\u6790\u3057\u3066\u4ed6\u306eDAC\u7528\u306b\u30a8\u30df\u30e5\u30ec\u30fc\u30c8\u3059\u308b\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u9593\u306b\u631f\u3081\u3070\u3067\u304d\u306a\u3044\u3053\u3068\u3082\u306a\u3044\u3060\u308d\u3046\u304c\uff0e\uff0e\uff0ePCM\u30e2\u30fc\u30c9\u3060\u3051\u3067\u826f\u3051\u308c\u3070\u3001\u4ed6\u306eDAC\u30c1\u30c3\u30d7\u3082\u63a5\u7d9a\u3057\u3066\u4f7f\u3046\u3053\u3068\u306f\u5bb9\u6613\u3060\u308d\u3046\uff0e<\/p>\r\n
\r\n

DA-300USB\u306eDAC\u30c1\u30c3\u30d7\u306b\u6e21\u3059\u30c7\u30fc\u30bf\u4fe1\u53f7\u306f\u4e00\u822c\u7684\u306aI2S\u3067\u306f\u306a\u304f\u3001\u5185\u90e8\u306e\u30c7\u30b8\u30bf\u30eb\u30d5\u30a3\u30eb\u30bf\u30fc\u51e6\u7406\u3092\u30d0\u30a4\u30d1\u30b9\u3059\u308b “External Digital Filter Interface ” \u30e2\u30fc\u30c9\u3067\u6e21\u3057\u3066\u3044\u308b\u3088\u3046\u306a\u306e\u3067\u3001\u3053\u306e\u8fba\u306e\u30c7\u30fc\u30bf\u4fe1\u53f7\u306e\u53d7\u3051\u6e21\u3057\u65b9\u6cd5\u306b\u3064\u3044\u3066\u4eca\u5f8c\u8a73\u7d30\u306b\u8abf\u3079\u3066\u898b\u308b\u4e8b\u306b\u3059\u308b\uff0e<\/p>\r\n
\r\n

\u53c2\u8003\u307e\u3067\u306b\u3001DA-300USB\u306eUSB-DAC\u30e2\u30b8\u30e5\u30fc\u30eb\u57fa\u677f\u306e\u30d4\u30f3\u756a\u53f7\u3068DAC\u30c1\u30c3\u30d7(PCM1795)\u306e\u30d4\u30f3\u756a\u53f7\u3068\u306e\u95a2\u4fc2\u3092\u793a\u3057\u305f\u56f3\u3092\u8f09\u305b\u3066\u304a\u304f\uff0e<\/p>\r\n
\r\n

\r\n\r\n
\r\n\"DAC
\u30c7\u30b8\u30bf\u30eb\u30a2\u30a4\u30bd\u30ec\u30fc\u30bf(AduM1285CRZ)\u3092\u4ecb\u3057\u3066DAC\u3001\u30de\u30eb\u30c1\u30d7\u30ec\u30af\u30b5(157\uff09\u306b\u63a5\u7d9a\u3055\u308c\u3066\u3044\u308b<\/span>\r\n
\r\n
\r\n
\r\n\"Digital<\/a>
\r\nDAC\u306e\u30c7\u30b8\u30bf\u30eb\u5165\u529b\u4fe1\u53f7\u3068USB-DAC\u30e2\u30b8\u30e5\u30fc\u30eb\u57fa\u677f\u5074\u306e\u4fe1\u53f7\u306e\u95a2\u4fc2<\/span>\r\n
\r\n
\r\n<\/div>","protected":false},"excerpt":{"rendered":"DENON DA-300USB\u3092\u66ab\u304f\u4f7f\u3063\u3066\u307f\u308b\u3068\u3001\u3084\u306f\u308a\u8272\u3005\u3068\u4e0d\u6e80\u304c\u51fa\u3066\u304f\u308b\uff0e\u5b89\u7269\u306e\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0AC\u30a2\u30c0\u30d7\u30bf\u65b9\u5f0f\u306e\u96fb\u6e90\u4f9b\u7d66\u306a\u3069\u306f\u8ad6\u5916\u3068\u3057\u3066\u3001\u30b1\u30fc\u30b9\u306e\u30c7\u30b6\u30a4\u30f3\u3092\u512a\u5148\u3055\u305b\u3066\u3057\u307e\u3063\u305f\u305b\u3044\u304b\u3001\u30b7\u30b9\u30c6\u30e0\u5168\u4f53\u306e\u96fb\u6e90\u4f9b\u7d66\u65b9\u5f0f\u306b\u554f\u984c\u304c\u3042\u308b\u3088\u3046\u3060\uff0e\r\n
\r\n

\u4eca\u56de\u306fDA-300USB\u306e\u5185\u90e8\u3092\u958b\u3051\u3066\u3001\u96fb\u6e90\u5468\u308a\u3084\u5168\u4f53\u306e\u56de\u8def\u69cb\u6210\u3084\u4f7f\u7528\u3057\u3066\u3044\u308bIC\u30c1\u30c3\u30d7\u306a\u3069\u306e\u60c5\u5831\u3092\u7c21\u5358\u306b\u7d39\u4ecb\u3057\u3066\u304a\u304f\uff0e","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[197,713],"tags":[665,666],"class_list":["post-4268","post","type-post","status-publish","format-standard","hentry","category-d-i-y","category-digital-audio","tag-da300usb","tag-inside-da-300usb"],"_links":{"self":[{"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/posts\/4268","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/comments?post=4268"}],"version-history":[{"count":3,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/posts\/4268\/revisions"}],"predecessor-version":[{"id":4646,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/posts\/4268\/revisions\/4646"}],"wp:attachment":[{"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/media?parent=4268"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/categories?post=4268"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/y2tech.net\/blog\/wp-json\/wp\/v2\/tags?post=4268"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}