Rohm BU7858KN, Technical Note

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TECHNICAL NOTE
Sound Path Selector LSI Series
Mixer & Selector
With 16bit D/A Converters
BU7858KN
，
BU7893GU
●
OUTLINE
This LSI is mounted with stereo 16bit D/A Converter and suitable for higher sound quality and miniaturization of cellular
phone with music play. BU7893GU has a 3D surround enhancement function and hence can play the wide-spreading stereo
sound from stereo speakers that are arranged nearby.
●
FEATURE
1) Mounted with Stereo 16bit audio D/A converter
2) Compatible with Stereo analogue interface
3) Stereo headphone amplifier (16
Ω
)
4) Low-band corrective circuit in headphone amplifier
5) Volume that can adjust the gain
6) Flexible mixing function
●
APPLICATION
Portable information & communication equipments such as cellular phone and PDA (Personal Digital Assistant) etc.
Cellular phone with music play
●
LINEUP
Function BU7858KN BU7893GU
Stereo audio D/A converter 16bit 16bit
Stereo audio interface format 16bit Right justified
18bit Right justified
IIS
16bit Left justified
16bit Right justified
IIS
3D surround enhancement function No Yes
3 band equalizer No Yes
Stereo headphone amplifier 16
Ω
driver 16
Ω
driver
Line output (600
Ω
driver) Yes No
Headphone amplifier low-band
correction function Built-in Built-in
Click noise reduction function Yes
(headphone only)
Yes
Package VQFN28 VCSP85H3
Oct. 2007