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LMC555CBPEVAL 数据表(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 LMC555CBPEVAL
功能描述  CMOS Timer
PDF  12 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LMC555CBPEVAL 数据表(HTML) 7 Page - National Semiconductor (TI)

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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 kΩ
RB = 3kΩ
C = 0.01µF
FIGURE 11. Pulse Position Modulator Waveforms
DS008669-6
FIGURE 12. 50% Duty Cycle Oscillator
www.national.com
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