AK4589 Datasheet, PDF(73/76 Page) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR

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AK4589 Datasheet, PDF (73/76 Pages) Asahi Kasei Microsystems – 2/8 CHANNEL AUDIO CODEC WITH DIR

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ASAHI KASEI

[AK4589]

1. Î¬Ï¥Ï¯ÏÍ±à°¿Ý¯Í·ÏÎ§Î¿ÏÏ¦Ï¯Î¬

Í±Ý¯à°¿Î¬Ï¥Ï¯ÏÍ·à¤Îà¹Í´Í¸à¥à·¼à®«ÒÍ Í¯Ô¼ÍÍÉ»à¯¨à§ AVDD, DVDD, PVDD Í´Í¸Î³ÎµÏÏÍ·ÎÏÏ©Î¬à°¿Ý¯

ÎÍ¢ÎÍ ÚÚÉ»AVDD, DVDD, PVDD Íà¸à°¿ÍÚÚÍ°Ý¯ÎÎà§ß¹Í¸Éºà°¿Íà§Íªà½±Ý¯Î³ÊÎÏ¯ÎµÎßÍÎà¶à½Í¸

ÍÎÎÍ¤ÎÉ»AVSS, DVSS, PVSS Í¸ÎÏÏ©Î¬Î¬Ï¥Ï¯ÏÍ´àªà¬Í Í¯Ô¼ÍÍÉ»Î³ÎµÏÏÍ·Î¬Ï¥Ï¯ÏÍ¸ÎÏÏ©Î¬Í±ÏÎÎ´

Î»Ï§Í°à·¼ÍÍ¯à´àª¢Í ÉºPC ÏÊÏà§Í·à°¿ÍÍ±ÍÛÍ´Ý¯ÎÍ°àªà¬Í Í¯Ô¼ÍÍÉ»à¦à¼°à¾Í·ÏÎ§Î¿ÏÏ¦Ï¯Î¬Î¯Ï¯ÏÏ¯Î±Í¸Í³ÎÎ

Ý¯à°¿ÍÏÏ¯Í·ÛÍÍ´àªà¬Í Í¯Ô¼ÍÍÉ»

2. Ø¬à¥ªà°¿Ñ¹à³à¾

VREFH pin Í´à³à¾ÍÎÎà°¿Ñ¹ÍÎÏÏ©Î¬à³à¥à¾Ï¨Ï¯Î´Îàªà°Í ÎÍ¢É»à¯¨à§ VREFH pin Í¸ AVDD pin Í´àªà¬Í Éº

AVSS pin Í±Í·ØÍ´ 0.1ÂµF Í·Î·Ï¥ÏÎ¿Î«Î¯Ï¯ÏÏ¯Î±Îàªà¬Í ÎÍ¢É»VCOM pin Í¸ AVDD/2 à°¿Ñ¹Îà¥à¾Í Í¯ÍÎÉº

ÎÏÏ©Î¬à§´ß¸Í·Î¯ÏÏ¯à°¿Ñ¹Í±Í Í¯à¢ÎÎÎÍ¢É»ÍÍ·ÏÏ¯Í´Í¸ß´à¤ªà³¾ÏÎ Î¶Îà¦Í¢ÚÎÍ¨ÎÍ´ 2.2ÂµF à°à±Í·à°¿

Õ²Î¯Ï¯ÏÏ¯Î±Í±à¸à¾»Í´ 0.1ÂµF Í·Î·Ï¥ÏÎ¿Î«Î¯Ï¯ÏÏ¯Î±Î AVSS Í±Í·ØÍ´àªà¬Í Í¯Ô¼ÍÍÉ»à²Í´Î·Ï¥ÏÎ¿Î«Î¯

Ï¯ÏÏ¯Î±Í¸ÏÏ¯Í´à¥à½ÎÍ©ÍÛÍ®ÍÍ¯àªà¬Í Í¯Ô¼ÍÍÉ»VCOM pin ÍÎà°¿à½¶Îà¤Í¬Í¯Í¸ÍÍÎÍ¤ÎÉ»ÎÍ¨Éº

ÏÎÎ´Î»Ï§à§´ß¸Éºà²Í´Î«Ï©Î¿Î«à§´ß¸Í¸à¸¡à¯ÎØ«Í·Î§Î¿ÏÏ¦Ï¯Î¬Îà¶ÍÎÍ¨Î VREFH pin,VCOM pin ÍÎÍ°Í

ÎÍ©Íà½Í Í¯Ô¼ÍÍÉ»

3. ÎÏÏ©Î¬à³à¾

ADC à³à¾Í¸Î³Ï¯Î¬Ï§Î¤Ï¯ÏÍ´Í³Í¬Í¯ÍÎÉºà²ºà·¦Í° VCOM Í´ÏÎ ÎÎµÍÎÍ¯ÍÎÍ¢É»à³à¾Ï¨Ï¯Î´Í¸ 0.62 x

VREFH Vpp (typ)@fs=48kHz Í°Í¢É»AK4589 Í¸ AVSS ÍÎ AVDD ÎÍ°Í·à°¿Ñ¹Îà³à¾Í¢ÎÍÍ±ÍÍ°ÍÎÍ¢É»à¥à¾

Î¯ÊÏÍ·ÏÎ¥ÊÏÎ¿ÏÍ¸ 2âs complement(2 Í·à¸´à¨º)Í°Í¢É»DC Î¦ÏÎ·Î¿ÏÍ¸à²ºà¬Í· HPF Í°Î©ÏÏ¯Î·Ï§ÍÎÎÍ¢É»

AK4589 Í¸ 64fs Í°ÎÏÏ©Î¬à³à¾ÎÎ±Ï¯ÏÏ¦Ï¯Î¬Í ÎÍ¢É»ÏÎÎ´Î»Ï§ÏÎÏ§Î»Í¸Éº64fs Í·à©à¨ºà´à·ÛÍ·à¬³Ò¬Î

à¦Íà«à¢Ò¬Òà§Í·ÏÎ Î¶ÎÍ¢ÎÍ¯à¦Í¢ÎÍ ÚÉ»AK4589 Í¸ 64fs à·ÛÍ·ÏÎ Î¶ÎÝ®à¨°ÍÍ¤ÎÍ¨ÎÍ´ÎÏ¯Î½Î¤Ï¦

ÎÎ´Ï¯Î¬ÏÎÏ§Î»(RC ÏÎÏ§Î»)Îà²ºà¬Í Í¯ÍÎÍ¢É»

4. ÎÏÏ©Î¬à¥à¾

DAC à¥à¾Í¸×¬àª¶à ©à²à¥à¾Í´Í³Í¬Í¯ÍÎÉºà¥à¾Ï¨Ï¯Î´Í¸à²ºà·¦Î¯ÏÏ¯à°¿Ñ¹Ê¢à»¿ AVDD/2Ê£Îà®¤à§ºÍ´ 0.54 x VREF Vpp

(typ)Í°Í¢É»à ©à²à¥à¾Í¸Öà·¦Í°Õà¢ÍÎÎÍ¢É»AOUT+Í± AOUT-Í·Õà¢à°¿Ñ¹Í¸ VAOUT=(AOUT+)-(AOUT-)Í°Í¢É»

Õà¢Î®Î Ï¯Í 1 Í·à§ß¹Éºà¥à¾Ï¨Ï¯Î´Í¸ 5.4Vpp (typ @VREF=5V)Í°Í¢É»Öà·¦Õà¢Õ³à¿Í·ÏÎ ÎÎµà°¿Ñ¹Í¸Öà·¦Í°

ÍÚÚÎÎÍ¢É»à³à¾Î¯ÊÏÍ·ÏÎ¥ÊÏÎ¿ÏÍ¸ 2âs complementÊ¢ÌÍ·à¸´à¨ºÊ£Í°Éº7FFFFFH(@24bit)Í´à¬°Í Í¯Í¸à©

Í·ÏÏ§ÎµÎÊÏ§Éº800000H(@24bit)Í´à¬°Í Í¯Í¸à·Í·ÏÏ§ÎµÎÊÏ§Éº000000H(@24bit)Í°Í· AOUT Í·à½§à«à®Í¸ 0V

Íà¥à¾ÍÎÎÍ¢É»

à ©à²à¥à¾Í·Í¨ÎÎ¯Ï¯ÏÏ¯Î±Îà¢ÎÍ£Í´ AOUT+/AOUT-Í· DC à©à·¼(à²ºà·¦Î¯ÏÏ¯à°¿Ñ¹=à»¿ AVDD/2É¼Î¦ÏÎ·Î¿Ï

à°¿Ñ¹Îà¦Í)Îà¦Í¢ÚÎÍÍ±Íà¥à½ÎÍ¢ÍÉºà¿ªà±³Í·ÎÏÏ©Î¬à²à©Îà¥à·¼Í´Ò¾Íà¥Í¢Í¨ÎÍ´Í¸ C Î§Î¿ÏÍ Í¯à¢à¼»

Í¢ÎÍÍ±Îà¨ªà¦Í ÎÍ¢É»z

MS0339-J-00

- 73 -

2004/09

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