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LMC1992

更新时间: 2024-01-24 19:41:51
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 261K
描述
LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector

LMC1992 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
包装说明:DIP, DIP28,.6Reach Compliance Code:unknown
风险等级:5.92JESD-30 代码:R-PDIP-T28
JESD-609代码:e0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:DIP
封装等效代码:DIP28,.6封装形状:RECTANGULAR
封装形式:IN-LINE电源:8 V
认证状态:Not Qualified子类别:Audio Control ICs
表面贴装:NO技术:BICMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUALBase Number Matches:1

LMC1992 数据手册

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December 1994  
LMC1992 Digitally-Controlled Stereo Tone and Volume  
Circuit with Four-Channel Input-Selector  
General Description  
Features  
Y
Low noise and distortion  
The LMC1992 is a monolithic integrated circuit that provides  
four stereo inputs, bass and treble tone controls, and vol-  
ume, balance, and front-rear fader controls. These functions  
are digitally controlled through a three-wire communication  
interface. All of the LMC1992s functions are achieved with  
only three external capacitors per channel. It is designed for  
Y
Four stereo inputs  
Y
40 volume levels including mute  
Y
20 fader levels  
Y
All attenuators have a 2 dB of attenuation per step  
Y
Front/back fade control  
b
line level input signals (300 mV  
gain of 0 dB.  
2V) and has a maximum  
Y
External processor loop  
Y
Only three external components per channel  
Serial programmable: standard MICROWIRETM  
interface  
The internal design is optimized for external capacitors hav-  
ing values of 0.1 mF or less. This allows the use of chip  
capacitors for coupling and tone control functions.  
Y
Y
Single supply operation: 6V to 12V supply voltage  
Low noise and distortion result from using analog switches  
and thin-film silicon-chromium resistor networks in the sig-  
nal path.  
Y
Protection address (similar to DS8906)  
Y
DC-coupled inputs  
Y
Single supply operation  
Volume and fader are at minimum and tone controls are flat  
when supply voltage is first applied.  
Applications  
Y
Additional tone control can be achieved using the LMC835  
stereo 7-band graphic equalizer connected to the  
LMC1992’s select-out/select-in external processor loop.  
Automotive audio systems  
Y
Sound reinforcement systems  
Y
Home entertainmentÐstereo television and music re-  
production systems  
Y
Electronic music (MIDI)  
Block and Connection Diagrams  
TL/H/10789–2  
Order Number LMC1992CCN  
See NS Package Number N28B  
TL/H/10789–1  
Left channel shown. Pin numbers in parentheses are for the right channel.  
DNRÉ is a registered trademark of National Semiconductor Corporation.  
COPSTM and MICROWIRETM are trademarks of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/H/10789  
RRD-B30M75/Printed in U. S. A.  

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