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BU8731

更新时间: 2024-02-11 04:29:52
品牌 Logo 应用领域
罗姆 - ROHM 蜂窝蜂窝式PC电话
页数 文件大小 规格书
11页 240K
描述
PCM codec IC for digital cellular telephones

BU8731 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:QFP
包装说明:VQFP-48针数:48
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.73压伸定律:A/MU-LAW
滤波器:YESJESD-30 代码:S-PQFP-G48
JESD-609代码:e3/e2长度:7 mm
线性编码:14-BIT功能数量:1
端子数量:48工作模式:SYNCHRONOUS
最高工作温度:85 °C最低工作温度:-20 °C
封装主体材料:PLASTIC/EPOXY封装代码:LFQFP
封装等效代码:QFP48,.35SQ,20封装形状:SQUARE
封装形式:FLATPACK, LOW PROFILE, FINE PITCH峰值回流温度(摄氏度):260
电源:3 V认证状态:Not Qualified
座面最大高度:1.625 mm子类别:Codecs
最大压摆率:0.0115 mA标称供电电压:3 V
表面贴装:YES技术:CMOS
电信集成电路类型:PCM CODEC温度等级:OTHER
端子面层:TIN/TIN COPPER端子形式:GULL WING
端子节距:0.5 mm端子位置:QUAD
处于峰值回流温度下的最长时间:10宽度:7 mm
Base Number Matches:1

BU8731 数据手册

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Communication ICs  
PCM codec IC for digital cellular  
telephones  
BU8731KV  
The BU8731KV is a PCM codec IC developed for use with digital cellular telephones. It contains analog input / output  
features such as a 14-bit linear precision, µ / A-LAW codec, mic and speaker amplifiers, and switching transistor for the  
ringer drive. This all makes the BU8731KV perfect for PDC and CDMA-type cellular telephones.  
FApplications  
Digital cellular telephones  
FFeatures  
1) )3V single power supply (VDD = 2.7V to 3.3V).  
2) Built-in 14-bit precision linear, µ / A-LAW codec.  
3) Transmission filter for the codec unit conforms to  
ITU-T recommendations.  
S Built-in drive amplifier for reception REXT (600).  
S Built-in electronic volume control for gain adjust-  
ment (for reception, transmission, and tone).  
S Data signal I / O circuit allows for connection to ex-  
ternal devices.  
4) Built-in PLL circuit for system clock generation.  
5) Clock frequency for PCM data transmission can be  
set anywhere between 64kHz (128kHz when linear)  
to 2048kHz.  
S For the REXT output and earphone output, soft-  
mute function reduces pop noise when the power  
is turned on and off.  
6) Analog input / output functions:  
7) DTMF signal and scale tone signal generator func-  
tions are built into the tone signal generator block.  
8) Internal switching transistor for ringer drive.  
9) VQFP 48-pin package.  
S Built-in mic amplifier.  
S Built-in receiver speaker amplifier (32BTL type).  
S Built-in earphone speaker amplifier (32single  
type).  
FAbsolute maximum ratings (Ta = 25_C)  
610  

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