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參數資料
| 型號： | LMC1983 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Digitally-Controlled Stereo Tone and Volume Circuit with Three Selectable Stereo Inputs |
| 中文描述： | 數字控制音調和音量立體聲三種可選擇的立體聲輸入電路 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 331K |
| 代理商： | LMC1983 |
LMC1983
Digitally-Controlled Stereo Tone and Volume Circuit with
Three Selectable Stereo Inputs
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-
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
LMC1983’s SELECT OUT/SELECT IN external processor
loop.
connected
to
the
Features
n
Low noise and distortion
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
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
Applications
n
Stereo television
n
Music reproduction systems
n
Sound reinforcement systems
n
Electronic music (MIDI)
n
Personal computer audio control
Block Diagram
DNR
is a registered trademark of National Semiconductor Corporation.
Dolby
is a registered trademark of Dolby Labs.
DS011279-1
August 1992
L
I
1999 National Semiconductor Corporation
DS011279
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LMC1983CIN | Pushbutton Switch; Actuator Style:Rectangular; Circuitry:DPST-1NO/1NC; Switch Operation:On-(On); Contact Current Max:5A; Collar Shape:Rectangular; Features:Illuminated; Leaded Process Compatible:Yes; Mounting Type:PCB |
| LMC1983CIV | Digitally-Controlled Stereo Tone and Volume Circuit with Three Selectable Stereo Inputs |
| LMC1992 | LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector |
| LMC1992CCN | LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector |
| LMC2001 | High Precision, 6MHz Rail-To-Rail Output Operational Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMC1983CIN | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMC1983CIV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMC1983CIVX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone/Volume/Balance Control |
| LMC1992 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector |
| LMC1992CCN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:LMC1992 Digitally-Controlled Stereo Tone and Volume Circuit with Four-Channel Input-Selector |
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