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LM1971MWC

更新时间： 2024-11-23 13:09:19
品牌 Logo 应用领域
德州仪器 - TI 衰减器
页数 文件大小 规格书
19页 939K
描述
SPECIALTY CONSUMER CIRCUIT, UUC, WAFER

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LM1971MWC 技术参数

生命周期：Obsolete零件包装代码：WAFER
包装说明：DIE,Reach Compliance Code：unknown
HTS代码：8542.39.00.01风险等级：5.58
Is Samacsys：N商用集成电路类型：CONSUMER CIRCUIT
JESD-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
封装形状：UNSPECIFIED封装形式：UNCASED CHIP
认证状态：Not Qualified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：UPPER
Base Number Matches：1

LM1971MWC 数据手册

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LM1971  
www.ti.com  
SNAS104B –FEBRUARY 1995–REVISED APRIL 2013  
LM1971 Overture™ Audio Attenuator Series Digitally Controlled 62 dB Audio Attenuator  
with/Mute  
Check for Samples: LM1971  
1
FEATURES  
DESCRIPTION  
The LM1971 is a digitally controlled single channel  
audio attenuator fabricated on a CMOS process.  
Attenuation is variable in 1 dB steps from 0 dB to −62  
dB. A mute function disconnects the input from the  
output, providing over 100 dB of attenuation.  
23  
•
3-Wire Serial Interface  
•
•
•
Mute Function  
Click and Pop Free Attenuation Changes  
8-Pin Plastic PDIP and SOIC Packages  
Available  
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 Distortion (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 PDIP or SOIC packages.  
APPLICATIONS  
•
•
•
•
•
•
Communication Systems  
Cellular Phones and Pagers  
Personal Computer Audio Control  
Electronic Music (MIDI)  
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.  
Sound Reinforcement Systems  
Audio Mixing Automation  
KEY SPECIFICATIONS  
•
•
•
Total Harmonic Distortion 0.0008 % (Typ)  
Frequency Response > 200 kHz (−3 dB) (Typ)  
Attenuation Range (Excluding Mute) 62 dB  
(Typ)  
•
•
Dynamic Range 115 dB (Typ)  
Mute Attenuation 102 dB (Typ)  
Typical Application  
Figure 1. Typical Audio Attenuator Application Circuit  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Overture is a trademark of dcl_owner.  
2
3
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 1995–2013, Texas Instruments Incorporated  
 
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