LM2901Q4T datasheet(7/17 Pages) STMICROELECTRONICS

Numer części	LM2901Q4T

Szczegółowy opis	Low-power quad voltage comparator

PDF	17 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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7 / 17 page

LM2901

Typical application schematics

Doc ID 2468 Rev 7

7/17

Figure 14.

Low frequency op-amp with

offset adjust

Figure 15.

Zero crossing detector (single

power supply)

2N 2222

5 V

100 k

1 k

5 V

1 M

100 k

1 M

Offset adjust

15 k

0.5

μF

1/ 4

LM2901

100 k

10 k

20 M

5 V

1N4148

5.1 k

100 k

1/ 4

LM2901

5.1 k

Figure 16.

Limit comparator

Figure 17.

Split-supply applications - zero

crossing detector

10 k

(ref)

high

(ref)

low

2N 2222

Lamp

1/ 4

LM2901

1/ 4

LM139

(12 V)

15 V

5.1 k

15 V

1/4

LM2901

Figure 18.

Crystal controlled oscillator

Figure 19.

Comparator with a negative

reference

2 k

200 k

100 k

200 k

1/ 4

LM2901

0.1

μF

f = 100 kHz

= 15 V

15 V

5.1 k

15 V

5 V

1/ 4

LM2901

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