BU7861KN_08 Datasheet, PDF (1/13 Pages) Rohm – Mixer & Selector with PCM CODEC and 16bit D/A Converter

TECHNICAL NOTE
Sound Path Selector IC Series for Mobile Phones
Mixer & Selector
with PCM CODEC
and 16bit D/A Converter
BU7861KN
●Abstract
The “In/Output Selector with Built-in PCM Codec 16bit D/A Converter” LSI is ideal for improving the sound quality of and
miniaturizing cellular phone handsets with music playback function, accumulating analog circuits for sound which
application CPUs and bass band LSIs are not ideally able to handle.
●Features
1) Loaded with stereo 16bit audio D/A converter
2) Compatible with stereo and analog interfaces
3) Built-in stereo headphone amp (16Ω)
4) Lowpass correction circuit built into the headphone amp
5) Gain-adjustable volume built in
6) Flexible mixing function built in
●Uses
Portable information communication devices such as cellular phone handsets and PDA (Personal Digital Assistants)
Cellular phone handsets with music playback function
●Absolute Maximum rating
Parameter
Symbol
rating
Unit
DVDD
Supply Voltage
AVDD, PVDD
-0.3 ～ 4.5
V
Power Dissipation
Pd
500 *1
mW
Operational Temperature Range
TOPR
-25 ～ +80
℃
Storage Temperature Range
TSTG
-55 ～ +125
℃
*1 When used at over Ta=25℃, lessen by 5.0mW per 1℃ increase.
●Recommended Operational Range
Parameter
Symbol
Min.
Typ.
Max.
Unit
Digital Supply Voltage
DVDD
2.7
3.0
3.3
V
Analog Supply Voltage
AVDD
2.7
3.0
3.3
V
Power Supply Voltage
PVDD
2.7
3.0
3.3
V
PLL Synchronous Signal
FSYNC
－
8
－
kHz
Frequency
Sep. 2008