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AK4368 Datasheet, PDF (55/58 Pages) Asahi Kasei Microsystems – PLL & HP-AMP DAC | |||
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ASAHI KASEI
[AK4368]
1. άϥϯÏ
ͱిݯͷÏΧοÏϦϯά
ͱݯిάϥϯÏ
Í·à¤Îà¹Í´Í¸à¥à·¼à®«ÒÍ Í¯Ô¼ÍÍɻ௨à§ÉºAVDD, PVDD, HVDD͸γεÏÏÍ·ÎÏϩάిݯɺ
DVDDʹ͸AVDDÍÎ10â¦Í·Î³Ï¦Êζà°ß
Îà¯¨Í Í¨Î³ÎµÏÏÍ·ÎÏϩάిݯÎÍ¢ÎÍ Ú
ÚÉ»AVDDͱDVDDÍ
à¸à°¿ÍÚ
ÚͰݯÎÎà§ß¹Í°ÎɺిÍà§Íªà½±Ý¯Î³ÊÎϯεÎßà¾Í¢Îà¶à½Í¸ÍÎÎͤÎÉ»AVDDͱHVDDÎà¸
Í¢Ú
ÚͰݯిÎà§ß¹ÉºAVDD͸HVDDͱà²à£Îͨ͸àªÍ´à½±Íªà§ÍͯԼÍÍÉ»ÎͨɺిݯOFFà£Í¸ÉºHVDDͱà²
à£Îͨ͸ཱͪʹÞÔ¼ÍͯԼÍÍÉ»PVDD͸ిÍà§Íªà½±Ý¯Î³ÊÎϯεÎßà¾Í¢Îà¶à½Í¸ÍÎÎͤÎÉ»AVSS,
DVSS, PVSS, HVSS͸γεÏÏÍ·ÎÏϩάάϥϯÏ
Í´àªà¬Í ͯԼÍÍɻγεÏÏͷάϥϯÏ
͸ÎÏϩάͱÏÎ
δλϧͰ෼Íͯà´àª¢Í ɺPCÏÊÏ
à§Í·à°¿ÍͱÍÛʹݯÎÍ°àªà¬Í ͯԼÍÍÉ»à¦à¼°à¾Í·ÏΧοÏϦϯάίϯÏ
ϯα͸ͳÎÎÍిݯÏϯͷÛÍÍ´àªà¬Í ͯԼÍÍÉ»
2. ج४ిѹ
AVDDÍ´à³à¾ÍÎÎిѹÍÎÏϩάà¥à¾Ï¨Ï¯Î´Îàªà°Í Î͢ɻ௨à§AVDD͸AVSSͱͷØÍ´0.1µFͷηϥÏο
ΫίϯÏϯαÎàªà¬Í Î͢ɻVCOM͸0.475 x AVDDిѹ(typ)Îà¥à¾Í ͯÍÎɺÎÏϩά৴߸ͷίÏϯిѹͱ
Í Í¯à¢ÎÎÎ͢ɻÍÍ·ÏϯʹÎߴप೾ÏΠζÎà¦Í¢ÚÎͨÎÍ´2.2µFà°à±Í·à°¿Õ²Î¯Ï¯ÏϯαÎAVSSͱͷØÍ´
àªà¬Í ͯԼÍÍÉ»ÎͨɺVCOM pinÍÎిྲྀÎͱͬͯ͸ÍÍÎͤÎÉ»ÏÎδλϧ৴߸ɺà²Í´Î«Ï©Î¿Î«Í¸à¸¡à¯Ø«
ÎͷΧοÏϦϯάÎà¶ÍÎͨÎɺAVDD pinÍÎͼVCOM pinÍÎÍ°ÍÎÍ©Íà½Í ͯԼÍÍÉ»
3. ÎÏϩάà¥à¾
DACà¥à¾Í¸Î³Ï¯Î¬Ï§Î¤Ï¯Ï
ʹͳͬͯÍÎɺà¥à¾Ï¨Ï¯Î´Í¸VCOMిѹÎத৺ʹɺÏοÏ
ÏΥϯͷà¥à¾Ï¨Ï¯Î´Í¸
VCOMిѹÎத৺ʹ0.47xAVDD(typ)@â3dBFSɺLOUT/ROUTÍ·à¥à¾Ï¨Ï¯Î´Í¸VCOMిѹÎத৺ʹ
0.61xAVDD(typ)@0dBFSͰ͢ɻà³à¾Î¯ÊÏ
Í·ÏÎ¥ÊÏοÏ͸ 2âsίϯÏϦÏϯÏ(2ͷิ਺)Ͱɺ7FFFFFH(@24bit)
Í´à¬°Í Í¯Í¸à©Í·ÏϧεÎÊϧɺ800000H(@24bit)Í´à¬°Í Í¯Í¸à·Í·ÏϧεÎÊϧɺ000000H(@24bit)Ͱͷཧà«à®
͸VCOMిѹÍà¥à¾ÍÎÎ͢ɻâΣมà¯àµÍØ«à©Í¢ÎଳҬÖÏΠζ (γΣÊÏϯάÏΠζ)ͳʹؾÍÎà§ß¹Í¸Éº
Öà·ÍÍ·ÏÎϧλͰݮਰÍͤͯԼÍÍÉ»
ÎÏϩάà¥à¾Í¸VCOM+਺mVà°à±Í·DCΦÏηοÏÎà£ÍͨÎɺ௨à§Í·à¢à¼»Í°Í¸Î¯Ï¯ÏϯαͰ DCà©à·¼ÎΧο
ÏÍ Î͢ɻ
MS0409-J-01
- 55 -
2005/08
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