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參數(shù)資料
| 型號： | LM1872N |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 消費家電 |
| 英文描述： | Radio Control Receiver/Decoder |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP18 |
| 封裝： | PLASTIC, DIP-18 |
| 文件頁數(shù)： | 17/19頁 |
| 文件大?。?/td> | 371K |
| 代理商： | LM1872N |
Applications
(Continued)
Where only one of the two available analog channels needs
conversion to a digital format, the LM555 approach offers
simplicity combined with up to 150 mA of output drive (Fig-
ure 14). The trailing edge of CH 1’s output pulse is used to
reset the timer in preparation for comparing CH 2’s pulse
width to the time constant (1.1 ms) set by the internal 10k
resistor and C1. For CH 2 pulse widths greater than 1.1 ms
C1 ramps to threshold, setting an internal latch in the
LM555 and causing the load to be energized. Due to the
timing of the reset pulse, however, the LM555 output will go
high again for 1.1 ms during the next pulse comparison cy-
cle thus producing an ON state duty cycle of about 95%.
For most commonly encountered loads such as motors, so-
lenoids, lamps, and horns, this is of little consequence. The
OFF state duty cycle is 100%.
TL/H/7912–25
FIGURE 13. Conversion of an Analog Channel
to a Digital (On/Off) Channel
TL/H/7912–26
FIGURE 14. Simple Conversion of an Analog to a Digital Channel
17
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相關代理商/技術參數(shù) |
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| LM1872N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| LM1872N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Receiver/Decoder |
| LM1875 | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W AUDIO POWER AMPLIFIER |
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| LM1875L-TA5-T | 制造商:UTC-IC 制造商全稱:UTC-IC 功能描述:20W AUDIO POWER AMPLIFIER |
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