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LMC1982

更新时间: 2024-01-20 18:23:20
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
14页 351K
描述
Digitally-Controlled Stereo Tone and Volume Circuit with Two Selectable Stereo Inputs

LMC1982 技术参数

是否Rohs认证:不符合生命周期:Obsolete
包装说明:QCCJ, LDCC28,.5SQReach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.89Is Samacsys:N
信道分离:80 dB商用集成电路类型:TONE CONTROL CIRCUIT
谐波失真:0.5%JESD-30 代码:S-PQCC-J28
JESD-609代码:e0长度:11.43 mm
频带数量:2信道数量:2
功能数量:1端子数量:28
最高工作温度:85 °C最低工作温度:-40 °C
封装主体材料:PLASTIC/EPOXY封装代码:QCCJ
封装等效代码:LDCC28,.5SQ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):NOT SPECIFIED
电源:9 V认证状态:Not Qualified
座面最大高度:4.57 mm子类别:Audio Control ICs
最大压摆率:25 mA最大供电电压 (Vsup):12 V
最小供电电压 (Vsup):6 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:11.43 mm
Base Number Matches:1

LMC1982 数据手册

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December 1994  
LMC1982  
Digitally-Controlled Stereo Tone and Volume Circuit with  
Two Selectable Stereo Inputs  
n Enhanced stereo function  
n Loudness compensation  
n 40 position 2 dB/step volume attenuator plus mute  
n Independent left and right volume controls  
n Low noise-suitable for use with DNR® and Dolby® noise  
reduction  
General Description  
The LMC1982 is a monolithic integrated circuit that provides  
volume, balance, tone (bass and treble), enhanced stereo,  
and loudness controls and selection between two pairs of  
stereo inputs. These functions are digitally controlled  
through a three-wire communication interface. There are two  
n External processor loop  
n Signal handling suitable for compact discs  
n Pop-free switching  
n Serially programmable: INTERMETAL bus (IM) interface  
n 6V to 12V single supply operation  
n 28 Pin DIP or PLCC package  
digital inputs for easy interface to other audio peripherals  
such as stereo decoders. The LMC1982 is designed for line  
level input signals (300 mV–2V) and has a maximum gain of  
−0.5 dB. Volume is set at minimum and tone controls are flat  
when supply voltage is first applied.  
Low noise and distortion result from using analog switches  
and poly-silicon resistor networks in the signal path.  
Additional tone control can be achieved using the LMC835  
stereo 7-band graphic equalizer connected to the  
LMC1982’s SELECT OUT/SELECT IN external processor  
loop.  
Applications  
n Stereo television  
n Music reproduction systems  
n Sound reinforcement systems  
n Electronic music (MIDI)  
n Personal computer audio control  
Features  
n Low noise and distortion  
n Two pairs of stereo inputs  
Block and Connection Diagrams  
DS011028-1  
DNR® is a registered trademark of National Semiconductor Corporation.  
Dolby® is a registered trademark of Dolby Labs.  
© 1999 National Semiconductor Corporation  
DS011028  
www.national.com  

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