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參數(shù)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(shù)字控制音調(diào)和音量立體聲三種可選擇的立體聲輸入電路 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大小： | 331K |
| 代理商： | LMC1983 |
Application Information
(Continued)
at lower output levels. If the load impedance is DC-coupled,
an increased quiescent current can flow. Latch-up may occur
if the total emitter current exceeds 5 mA. Thus, maximum
output voltage can be increased and much lower distortion
levels can be achieved using load impedances of at least
25 k
.
INPUT IMPEDANCE
The input impedance of pins 4, 5, 6, 23, 24 and 25 is defined
by internal bias resistors and is typically 50 k
.
The SELECT IN pins have an input impedance that varies
with the BASS and TREBLE control settings. The input im-
pedance is 100 k
at DC and 19 k
at 1 kHz when the con-
trols are set at 0 dB. Minimum input impedance of 30.4 k
at
DC and 16 k
at 1 kHz occurs when maximum boost is se-
lected. At 10 kHz the minimum input impedance, with the
tone controls flat, is 6.8 k
and, with the tone controls at
maximum boost, is 2.5 k
.
DS011279-4
FIGURE 2. Input and Mode Select Circuitry
www.national.com
8
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| LMC1983CIV | Digitally-Controlled Stereo Tone and Volume Circuit with Three Selectable Stereo Inputs |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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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