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LM1971MWC PDF预览

LM1971MWC

更新时间: 2024-11-23 13:09:19
品牌 Logo 应用领域
美国国家半导体 - NSC 衰减器
页数 文件大小 规格书
11页 251K
描述
IC SPECIALTY CONSUMER CIRCUIT, UUC, WAFER, Consumer IC:Other

LM1971MWC 技术参数

生命周期:Transferred包装说明:DIE, DIE OR CHIP
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.25Is Samacsys:N
商用集成电路类型:CONSUMER CIRCUITJESD-30 代码:X-XUUC-N
功能数量:1最高工作温度:85 °C
最低工作温度:-20 °C封装主体材料:UNSPECIFIED
封装代码:DIE封装等效代码:DIE OR CHIP
封装形状:UNSPECIFIED封装形式:UNCASED CHIP
电源:12 V认证状态:Not Qualified
子类别:Audio Control ICs最大压摆率:3 mA
最大供电电压 (Vsup):12 V最小供电电压 (Vsup):4.5 V
表面贴装:YES技术:CMOS
温度等级:OTHER端子形式:NO LEAD
端子位置:UPPERBase Number Matches:1

LM1971MWC 数据手册

 浏览型号LM1971MWC的Datasheet PDF文件第2页浏览型号LM1971MWC的Datasheet PDF文件第3页浏览型号LM1971MWC的Datasheet PDF文件第4页浏览型号LM1971MWC的Datasheet PDF文件第5页浏览型号LM1971MWC的Datasheet PDF文件第6页浏览型号LM1971MWC的Datasheet PDF文件第7页 
May 1999  
vOutre  
LM1971Overture Audio Attenuator Series  
Digitally Controlled 62 dB Audio Attenuator with/Mute  
General Description  
Key Specifications  
n Total harmonic distortion  
n Frequency response  
n Attenuation range (excluding mute)  
n Dynamic range  
0.0008% (typ)  
200 kHz (−3 dB) (typ)  
62 dB (typ)  
The LM1971 is a digitally controlled single channel audio at-  
tenuator fabricated on a CMOS process. Attenuation is vari-  
able in 1 dB steps from 0 dB to −62 dB. A mute function dis-  
connects the input from the output, providing over 100 dB of  
attenuation.  
>
115 dB (typ)  
102 dB (typ)  
n Mute attenuation  
The performance of the device is exhibited by its ability to  
change attenuation levels without audible clicks or pops. In  
addition, the LM1971 features a low Total Harmonic Distor-  
tion (THD) of 0.0008%, and a Dynamic Range of 115 dB,  
making it suitable for digital audio needs. The LM1971 is  
available in both 8-pin plastic DIP or SO packages.  
Features  
n 3-wire serial interface  
n Mute function  
n Click and pop free attenuation changes  
n 8-pin plastic DIP and SO packages available  
The LM1971 is controlled by a TTL/CMOS compatible 3-wire  
serial digital interface. The active low LOAD line enables the  
data input registers while the CLOCK line provides system  
timing. Its DATA pin receives serial data on the rising edge of  
each CLOCK pulse, allowing the desired attenuation setting  
to be selected.  
Applications  
n Communication systems  
n Cellular Phones and Pagers  
n Personal computer audio control  
n Electronic music (MIDI)  
n Sound reinforcement systems  
n Audio mixing automation  
Typical Application  
DS012353-1  
FIGURE 1. Typical Audio Attenuator Application Circuit  
Overture is a trademark of National Semiconductor Corporation.  
© 1999 National Semiconductor Corporation  
DS012353  
www.national.com  

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