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参数资料
| 型号： | LMC555MX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 模拟波形发生器 |
| 英文描述： | PULSE; RECTANGULAR, 3 MHz, TIMER, PDSO8 |
| 封装： | PLASTIC, SOIC-8 |
| 文件页数： | 13/15页 |
| 文件大小： | 425K |
| 代理商： | LMC555MX |
Application Info (Continued)
the modulating signal, since the threshold voltage and hence
the time delay is varied.
Figure 11 shows the waveforms
generated for a triangle wave modulation signal.
50% DUTY CYCLE OSCILLATOR
The frequency of oscillation is
f = 1/(1.4 R
CC)
DS008669-21
FIGURE 10. Pulse Position Modulator
DS008669-16
VCC = 5V
Top Trace: Modulation Input 1V/Div.
TIME = 0.1 ms/Div.
Bottom Trace: Output Voltage 2V/Div.
RA = 3.9 k
RB =3 k
C = 0.01F
FIGURE 11. Pulse Position Modulator Waveforms
DS008669-6
FIGURE 12. 50% Duty Cycle Oscillator
micro SMD Marking Orientation
Top View
DS008669-23
Bumps are numbered counter-clockwise
www.national.com
7
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