BU7858KN-E2 ROHM

Audio Accessory ICs for Mobile Devices Mixer & Selector ICs with 16bit D/A Converter BU7858KN,BU7893GU No.10087EAT03 Description 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. Features 1) Mounted with Stereo 16bit audio D/A converter 2) Compatible with Stereo analogue interface 3) Stereo headphone amplifier (16) 4) Low-band corrective circuit in headphone amplifier 5) Volume that can adjust the gain 6) Flexible mixing function Applications Portable information & communication equipments such as cellular phone and PDA (Personal Digital Assistant) etc. Cellular phone with music play Line up matrix Function BU7858KN BU7893GU Stereo audio D/A converter 16bit 16bit 16bit Right justified 16bit Left justified Stereo audio interface format 18bit Right justified 16bit Right justified IIS IIS 3D surround enhancement function No Yes 3 band equalizer No Yes Stereo headphone amplifier 16 driver 16 driver Line output (600 driver) Yes No Headphone amplifier low-band correction function Built-in Built-in Yes Click noise reduction function Yes (headphone only) Package VQFN28 VCSP85H3 www.rohm.com 2010.09 - Rev.A 1/24 2010 ROHM Co., Ltd. All rights reserved. Technical Note BU7858KN,BU7893GU Absolute maximum ratings Parameter Symbol Ratings Unit BU7858KN VDD -0.3 4.5 V DVDDIO Power-Supply Voltage -0.3 4.5 AVDD BU7893GU V DVDDCO -0.3 2.5 *1 BU7858KN 580 Power Dissipation Pd mW *2 BU7893GU 700 BU7858KN -20 +85 Operating Temperature T OPR BU7893GU -30 +85 BU7858KN -55 +125 Storage Temperature T STG BU7893GU -50 +125 *1 : 5.8mW is decreased every 1 when using it over 25. (Mounted on the ROHM standard PCB ) *2: 7.0mW is decreased every 1 when using it over 25. Operating conditions BU7858KN Ratings Parameter Symbol Unit Min. Typ. Max. Power-Supply Voltage VDD 2.7 3.0 3.3 V BU7893GU Ratings Parameter Symbol Unit Min. Typ. Max. Analog Power-Supply Voltage AVDD 2.6 2.8 3.3 V Digital I/O Power-Supply Voltage DVDDIO DVDDCO 1.8 3.3 V Digital Core Power-Supply Voltage DVDDCO 1.62 1.8 1.98 V www.rohm.com 2010.09 - Rev.A 2/24 2010 ROHM Co., Ltd. All rights reserved.