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network playerµéÀº ³»ºÎ¿¡ Á» Á¶¾ÇÇÑ Ç°ÁúÀÇ DAC ChipÀ» ³»ÀåÇÏ°í ÀÖ¾î À½Áú°ú
¼º´ÉÀÌ µÚ¶³¾îÁø´Ù. ±×·¡¼ ¸¹Àº »ç¶÷µéÀÌ À½ÁúÇâ»óÀ» À§Çؼ network player·Î ¿ÜÀåÇü
DAC¸¦ »ç¿ëÇÏ°í ÀÖ´Ù. ÇÏÁö¸¸ ÀÌ°Í ¶ÇÇÑ ´õ Å« ¹®Á¦Á¡À» ¸¸µé°í ÀÖ´Ù. °°Àº ¹®Á¦Á¡µéÀÌ
DVD³ª Blu Ray player, CD Player¿¡¼µµ »ý±â°í ÀÖ´Ù.
ÀÌ·¯ÇÑ ÀÌÀ¯·Î ÃÖ»óÀÇ
DAC Chipset°ú ÃÖ»óÀÇ analog stage¿Í interface¸¦ °¡Áø DAC moduleÀ» °³¹ßÇÏ°Ô
µÈ µ¿±â°¡ µÈ °ÍÀÌ´Ù. ÀÌÁ¨ ÀÌ module¸¸À¸·Îµµ ½±°Ô »ó±ÞÀÇ À½ÁúÀ» °¡Áø network
player³ª preamp ¶Ç´Â ´Ù¸¥ °ÍµéÀ» ¸¸µé ¼ö ÀÖÀ» °ÍÀÌ´Ù.
ModuleÀÇ Æ¯Â¡Àº
¾Æ·¡¿Í °°´Ù.
DAC Chipset: |
PCM1704-K |
Digital filter: |
DF1704 rev E Standalone |
Expandability: |
Microprocessor control |
Analog Filter: |
None |
Analog Stage: |
LM4562 or Discrete OPAMP |
Receiver: |
Low jitter 50 pS digital PLL |
Interfaces: |
SP/DIF, Toslink, ext. Clock, microprocessor port, Clock Resync
port |
Settings: |
Digital source, Phase |
Analog Outputs: |
Unbalanced only 2.6V rms |
Power Supply: |
+/-12V DC 150 mA (Optional DEXA Dual Tracking Regulator) |
Size: |
80 by 80 mm and 25mm height (3.2 by 3.2 by 1
inch). |
DAC module˼ +/-
12V DC·Î ÀÛµ¿ÀÌ µÇ¸ç 150mA¸¸ ¼Ò¸ðµÈ´Ù. PCM1704 analog reference¿¡´Â ºÐ¸®Çü low
noise power regulator·Î Áö¿øµÇ¸ç ÀÌ°ÍÀÌ hi-end DAC systemÀÌ´Ù.
ÃÖ»óÀÇ ¼º´ÉÀ» ³»±â
À§Çؼ hi-end module type¿¡´Â Dexa ultra low noise mains power supply°¡ Á¦°øµÈ´Ù.
Analog stage´Â single
opampÀÎ type LM4572³ª À¯»ç National Semiconductor typeÀ¸·Î ±¸µ¿ÀÌ µÇ¸ç ½±°Ô
±³Ã¼°¡ °¡´ÉÇϵµ·Ï 8pin DIP socketÀÌ ÀåÂøµÇ¾ú´Ù. ÇÏÁö¸¸ ÃÖ»óÀÇ ¼º´ÉÀ» À§Çؼ´Â
DexaÀÇ dicerete opamp°¡ ´ç¿¬ÇÑ ¼±ÅÃÀÌ µÉ °ÍÀÌ´Ù.
Phase
Á¶Á¤ jumper´Â phase¸¦ 0³ª 180µµ·Î ¼³Á¤ÇÒ ¼ö ÀÖ°Ô ÇÑ´Ù. µû¶ó¼ ÇÊ¿ä¿¡ µû¶ó¼
DAC SÀÇ Ãâ·ÂÀ» Á÷Á¢ inverting class D amp¿¡ ¿¬°áÇÒ ¼ö µµ ÀÖ´Ù. ÀÌ·¯ÇÑ ÀåÁ¡À¸·Î
analog inverter stage¸¦ ¾ø¿¡ »ç¿ëÇÏÁö ¾ÊÀ» ¼ö ÀÖ´Ù.
Ãâ°í½Ã
DAC board´Â stand alone mode·Î µ¿ÀÛÇϵµ·Ï µÇ¾î ÀÖ´Ù. ÀÌ´Â ´ëºÎºÐÀÇ network formatÀ̳ª
sound card, cd player¿¡ ÀûÇÕÇÑ 44.1°ú 48KHz mode¿¡¼¸¸ playÇÑ´Ù´Â ¶æÀÌ´Ù. ÇÏÁö¸¸
³ªÁß¿¡ Ãâ½Ã°èȹÀ¸·Î ÀÖ´Â diaplay¿Í operation panelÀ» °¡Áø ¿ÜºÎ microprocessor module¿¡
¿¬°áµÇ´Â onboard plug interface°¡ Ãß°¡µÇ¸é 96/192KHz¿Í 24bit interface, digital
volume control, filter adjustment µî ´Ù¾çÇÑ ±â´ÉÀ» ¼ö¿ëÇÒ ¼ö ÀÖÀ» °ÍÀÌ´Ù.
network
player ³»ºÎ¿¡ »ç¿ëµÉ °æ¿ì D Clock 11.2896MHz¸¦ Àû¿ëÇÒ ¼ö ÀÖ¾î Àü¼Û jitter¸¦
Å©°Ô ÁÙ¿©ÁÙ ¼ö ÀÖ´Ù. ÀÌ·¯ÇÑ ¼±Åûç¾çÀ» Àû¿ëÇÏ°Ô µÇ¸é network playerÀÌ¶óµµ D/A
converter PCM1704-KÀÇ ¼º´ÉÀ» ¸Å¿ì ³ôÀº level·Î ¼º´ÉÇâ»óÀ» ½Ãų ¼ö ÀÖ´Ù.
ºñ·Ï DAC S°¡
network playerÀÇ upgrade¿ëÀ¸·Î °³¹ßµÇ¾ú´Ù ÇÏ´õ¶óµµ SP/DIF³ª Toslink input¸¸
ÀÌ¿ëÇÑ´Ù¸é µ¶¸³ DAC¿¡¼µµ ¿Ïº®È÷ Àû¿ëÀÌ °¡´ÉÇÏ´Ù. ÀÌÁ¦ ÀÌ ÀÛÀº module·Îµµ cd
player³ª preamplifier¸¦ ¾ÆÁÖ ÃÖ»óÀÇ À½Áú ¼º´ÉÀ¸·Î upgrade ½ÃÄÑÁִµ¥ ºÎÁ·ÇÔÀÌ ¾øÀ» °ÍÀÌ´Ù.
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