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LMC1983CIN

更新时间: 2024-02-27 05:47:29
品牌 Logo 应用领域
美国国家半导体 - NSC 音频控制集成电路消费电路商用集成电路光电二极管
页数 文件大小 规格书
14页 335K
描述
Digitally-Controlled Stereo Tone and Volume Circuit with Three Selectable Stereo Inputs

LMC1983CIN 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:5.77Is 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

LMC1983CIN 数据手册

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August 1992  
LMC1983  
Digitally-Controlled Stereo Tone and Volume Circuit with  
Three Selectable Stereo Inputs  
n Three pairs of stereo inputs  
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 LMC1983 is a monolithic integrated circuit that provides  
volume, balance, tone (bass and treble), loudness controls  
and selection between three pairs of stereo inputs. These  
functions are digitally controlled through a three-wire com-  
munication interface. There are two digital inputs for easy in-  
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  
terface to other audio peripherals such as stereo decoders.  
The LMC1983 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 volt-  
age 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  
LMC1983’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  
Block Diagram  
DS011279-1  
DNR® is a registered trademark of National Semiconductor Corporation.  
Dolby® is a registered trademark of Dolby Labs.  
© 1999 National Semiconductor Corporation  
DS011279  
www.national.com  

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