LMV331M7X datasheet(13/32 Pages) TI

Part #	LMV331M7X

Description	LMV331-N Single / LMV393-N Dual / LMV339-N Quad General Purpose, Low Voltage, Tiny Pack Comparators

PDF	32 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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13 / 32 page

LMV331-N, LMV339-N, LMV393-N

www.ti.com

SNOS018G – AUGUST 1999 – REVISED FEBRUARY 2013

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:

Figure 18. Pulse Generator

(16)

Solving these equations for t1 and t2

t1 =R4C1ln2

(17)

t2 =R5C1ln2

(18)

These terms will have a slight error due to the fact that Vmax is not exactly equal to 2/3 VCC but is actually

reduced by the diode drop to:

(19)

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Product Folder Links: LMV331-N LMV339-N LMV393-N

LMV331M7X Datasheet(PDF) 13 Page - Texas Instruments