LM339 datasheet(7/10 Pages) STMICROELECTRONICS

Part #	LM339

Description	LOWPOWER QUAD VOLTAGE COMPARATORS

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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7 / 10 page

LM139,A-LM239,A-LM339,A

7/10

TYPICAL SINGLE (continued)

TWO-DECADE HIGH-FREQUENCY VCO

LIMIT COMPARATOR

SPLIT-SUPPLY APPLICATIONS

ZERO CROSSING DETECTOR

CRYSTAL CONTROLLED OSCILLATOR

COMPARATOR WITH A NEGATIVE

REFERENCE

VCC

Output 1

Output 2

VCC

100k

Ω

3k

Ω

5.1k

Ω

VCC /2

0.01

µ F

500pF

100k

Ω

0.1

µF

20k

Ω

50k

Ω

Frequency control

voltage input

vcontrol

VCC =+30V

+250mV

Vcontrol +50V

700 Hz

f

100kHz

o

20k

Ω

3k

Ω

1/4

LM139

1/4

LM139

1/4

LM139

10k

Ω

e I ~

RS

2RS

V(ref)

high

2RS

V(ref)

low

2N 2222

(12V)

V

CC

Lamp

1/4

LM139

1/4

LM139

15V

5.1k

Ω

e o

e I ~

15V

1/4

LM139

2k

Ω

0.1

µF

200k

Ω

f = 100kHz

eo

=15V

VCC

0

100k

Ω

200k

Ω

1/4

LM139

15V

5.1k Ω

e o

e I ~

15V

5V

1/4

LM139

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