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DexaDAC S.2011³â 4¿ù NewClassD / DEXA
Technologies´Â ½ÅÁ¦Ç° Network player upgrade¿ë DAC board¸¦ Ãâ½ÃÇÕ´Ï´Ù.
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Network player ³»ºÎ¿¡´Â ±×·¸°Ô ¶Ù¾î³ªÁö ¸øÇÑ DAC chipÀ» »ç¿ëÇÏ°í
ÀÖ¾î ¿Ö°îÀÌ ½ÉÇÏ°í À½ÁúÀÌ ¿ì¼öÇÏÁö ¸øÇÕ´Ï´Ù. ±×·¡¼ ¸¹Àº »ç¶÷µéÀÌ
À½Áú Çâ»óÀ» À§Çؼ ¿ÜºÎ DAC¸¦ »ç¿ëÇÏ°í ÀÖ½À´Ï´Ù. ÇÏÁö¸¸ ±×°ÍÀº ¿ÀÈ÷·Á
´õ ÁÁÁö ¾ÊÀº °á°ú¸¦ °¡Á®¿Ã ¼öµµ ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ ÀÌÀ¯·Î ¿ì¸®´Â
¼¼°è ÃÖ°í DAC chipset°ú ¶Ù¾î³ ¾Æ³¯·Î±×´Ü°ú ÀÎÅÍÆäÀ̽º¸£ °¡Áø DAC
moduleÀ» ¸¸µé °Ô µÈ ÀÌÀ¯ÀÔ´Ï´Ù. ¼Õ½±°Ô ÃÖ°í¼öÁØÀÇ À½ÁúÀ» ¿©·¯ºÐÀÇ
Network player¿¡ À̽ÄÇϰųª ¶ÇÇÑ ÇÁ¸®¾ÚÇÁ³ª ´Ù¸¥ ±â±âµé¿¡°Ô Àû¿ëÇÒ
¼ö µµ ÀÖ½À´Ï´Ù.
´ÙÀ½°ú °°Àº ½ºÆåÀ¸·Î ¹ß¸ÅµË´Ï´Ù:
DAC Chipset: |
PCM1704-K2 |
Digital filter: |
DF1704 Standalone |
Expandability: |
Microprocessor control |
Analog Filter: |
None |
Analog Stage: |
LM4562 or Discrete OPAMP |
Receiver: |
Low jitter digital PLL |
Interfaces: |
SP/DIF, ext. Clock |
Analog Outputs: |
Unbalanced only |
Power Supply: |
12V DC 300 mA |
Expandability: |
External lownoise power supply |
Size: |
50 by 80 mm and 25mm height (2 by 3.2 by 1
inch). |
º¸µå¿¡´Â Power supply º¯È¯±â¸¦
žÀçÇÏ°í ÀÖ¾î Network player³»ºÎÀÇ Àü¿øÀ» »ç¿ëÇÒ ¼ö ÀÖ°Ô ÇÏ°í ÀÖ½À´Ï´Ù.
³»ºÎ¿¡ žÀçµÈ º¯È¯±â´Â 12V ´ÜÀü¿øÀ» +/- 12V DC´Â ¾Æ³¯·Î±×¿¡, +5V¿Í
3.3V´Â µðÁöÅÐ ½Ã½ºÅÛ¿¡ °ø±ÞÇϵµ·Ï ÇÕ´Ï´Ù. PCM1704 analog ÂÊ¿¡´Â
ºÐ¸®Çü Low noise power supply¸¦ °¡Áö°í ÀÖ½À´Ï´Ù. ÀÌ·¯ÇÑ °ÍÀÌ High
end DAC system¿¡¼ Àû¿ëµÇ´Â ¹æ¹ýÀÔ´Ï´Ù.
¿ÜºÎ ÀÔ·ÂÀü¿øµµ
°¡´ÉÇÏ¿© ÀÌ·¯ÇÑ ¸ñÀû¿ëÀ¸·Î ÀÔ·Â plug°¡ ¸¶·ÃµÇ¾î ÀÖ½À´Ï´Ù. ¿©±â¿¡´Â
DexaÀÇ Low noise power supply¿¬°áÇϸé ÁöÀúºÐÇÑ Àü¿ø¿¡¼ Çعæ½ÃÄÑÁÙ
¼ö ÀÖ½À´Ï´Ù.
Analog stage´Â LM4572³» À¯»çÇÑ National Semiconductor typeÀÇ
Single opamp·Î ±¸µ¿µË´Ï´Ù. 8 pin DIP socketÀÌ Á¦°øµÇ¾î ½±°Ô ´Ù¸¥
°ÍÀ¸·Î ±³Ã¼ ºñ±³ÇÒ ¼ö ÀÖ½À´Ï´Ù. ÃÖ»óÀÇ Ãßõ¹æ½ÄÀ¸·Î´Â DexaÀÇ discrete
OPAMP¸¦ ÃßõÇÏ¸ç ¿ª½Ã º°µµÀÇ socketÀÌ Å¾ÀçµÇ¾î ÀÖ¾î ¹Ù·Î Àû¿ëÀÌ
°¡´ÉÇÕ´Ï´Ù.
»ý»ê½Ã DAC board´Â Stand alond mode·Î µ¿À۵Ǹç
44.1rhk 48KHz mode·Î¸¸ playµË´Ï´Ù. ´ëºÎºÐÀÇ Network player³ª Sound
card, CD Player¿¡¼ Àû¿ëµÇ´Â ¹æ½ÄÀÔ´Ï´Ù. ÇÏÁö¸¸ žÀçµÈ Plug
ÀÎÅÍÆäÀ̽º¿Í DIsplay¸¦ °¡Áø ¿ÜºÎ Microprocessor module°ú µ¿ÀÛ PanelÀÌ
¿ÃÇظ»±îÁö °ø±ÞµÉ ¿¹Á¤ÀÔ´Ï´Ù. ÀÌ·² °æ¿ì 96/192KHz ÀÎÅÍÆäÀ̽º,
Digital volume control, Filter adjustmentµîÀÇ Àû¿ëÀÌ °¡´ÉÇØÁ® ´Ù¾çÇÑ
±â´Éµé·Î È®´ëÇÒ ¼ö ÀÖ½À´Ï´Ù.
³»ºÎ Network player¿¡
D Clock 11.2896MHz°¡ Àû¿ëµÇ¸é Àü¼Û Jitter°¡ Á¦°ÅµÇ¸ç ÀÌ·¯ÇÑ ¼±ÅÃÀ»
ÇÒ °æ¿ì D/A converter PCM1704-K2´Â ÃÖ»óÀÇ ¼º´ÉÀ¸·Î Çâ»óµÉ ¼ö
ÀÖ½À´Ï´Ù.
DAC S´Â Network player¿ëÀ¸·Î °³¹ßµÇ¾úÁö¸¸ SP/DIF
onlyÀÔ·ÂÀ» ¹Þ´Â ÀÏ¹Ý ´Ù¸¥ DAC¿¡µµ ¿Ïº®ÇÏ°Ô Àû¿ëÇÒ ¼ö ÀÖ½À´Ï´Ù.
ÀÛÀº »çÀÌÁî·Î ÀÎÇØ ´ëºÎºÐÀÇ CD Player³ª ÇÁ¸®¾ÚÇÁ¿¡ Àû¿ëÇÒ ¼ö ÀÖ°í,
ÃÖ°íÀÇ DAC ChipsetÀÎ PCM1704¿¡ ÀÇÇÑ È®½ÇÇÑ À½ÁúÇâ»óÀ¸·Î º¸»ó¹ÞÀ»
¼ö ÀÖÀ» °ÍÀÔ´Ï´Ù.
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