LMV331M7 datasheet(19/38 Pages) TI1

tên linh kiện	LMV331M7

Giải thích chi tiết về linh kiện	General-Purpose, Low-Voltage, Tiny Pack Comparators

PDF	38 Pages

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nhà sản xuất	TI1 [Texas Instruments]

Trang chủ	http://www.ti.com

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LMV331-N, LMV339-N, LMV393-N

www.ti.com

SNOS018H – AUGUST 1999 – REVISED DECEMBER 2014

Typical Applications (continued)

8.2.3 Pulse Generator With Variable Duty Cycle

Figure 24. Pulse Generator With Variable Duty Cycle

The pulse generator with variable duty cycle is just a minor modification of the basic square wave generator.

Providing a separate charge and discharge path for capacitor C1generates a variable duty cycle. One path,

through R2 and D2 will charge the capacitor and set the pulse width (t1). The other path, R1 and D1 will discharge

the capacitor and set the time between pulses (t2).

By varying resistor R1, the time between pulses of the generator can be changed without changing the pulse

width. Similarly, by varying R2, the pulse width will be altered without affecting the time between pulses. Both

controls will change the frequency of the generator. The pulse width and time between pulses can be found from:

(16)

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LMV331M7 bảng dữ liệu(PDF) 19 Page - Texas Instruments