USB Audio Decoder ICs - BU94702AKV

ROHM's USB Audio Decoder ICs integrate a USB 2.0 host, SD memory card controller, AAC decoder, WMA decoder, MP3 decoder, Audio DAC amp, and a system controller all on a single chip, allowing easy playback of music stored in USB flash memory using an audio player. They can be easily added to virtually any audio device (i.e. CD player, mini-component stereo, portable player, car stereo) for greater functionality.

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* This product is a STANDARD grade product and not recommend for on-vehicle devices.
número de peça
Estado de Condição
Quantidade Unidade
Quantidade mínima Package
tipo de embalagem
BU94702AKV-E2 Active VQFP80 1000 1000 Taping sim
Vcc(Min.)[V] 3.0
Vcc(Max.)[V] 3.6
Digital Audio I/F I2S SPDIF
USB USB2.0 Full Speed
SD MMC SD / miniSD / microSD / SDHC
Display information Number(Folder, File), Reproduction time, Name(Folder, File), Tag(Artist, Album, Title)
MP3 MPEG 1, 2, 2.5 LAYER 1, 2, 3
WMA WMA9 Standard
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ・ USB2.0 Full Speed host I/F function contained.
    ・ SD card I/F function contained.
    ・ I²C format I/F function contained.
    ・ Protocol conversion from I²C to USB HID or from USB HID to I²C. *1
    ・ MP3 encode function contained. *2,*3,*10
    ・ MP3 decode function contained. *4
    ・ WMA decode function contained. *5
    ・ AAC decode function contained. *6,*7
    ・ WAV format file playing function contained. *7
    ・ Sample Rate Converter contained. *8
    ・ System Controller contained.
    ・ FAT analysis function contained.
    ・ CD-ROM I/F function and CD-ROM decoder function contained.
    ・ Browsing function of File Names, Folder Names on music playing contained.
    ・ ID3TAG and WMATAG and AACTAG Analysis.
    ・ Fast forward/backward playing function contained.
    ・ Resume function contained.
    ・ File data Reading/Writing function contained.
    ・ Program download function from external serial Flash ROM contained.
    ・ Audio DAC and Sound Effect function contained.
    ・ Digital Audio Out function contained. *9
    ・ Regulator for internal CORE power supply contained.
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Dados técnicos
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.