LM2902 datasheet(8/14 Pages) STMICROELECTRONICS

部件名	LM2902

功能描述	LOW POWER QUAD OPERATIONAL AMPLIFIERS

PDF	14 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

8 / 14 page

10kΩ

1MΩ

1/4

LM2902

10kΩ

e I

e O

+5V

(mV)

AV=1 +

(As s hown

= 101)

NON-INVERTING DC GAIN

1/4

LM2902

e O

100kΩ

eo =e1 +e2 -e3 -e4

where (e1 +e2)

≥ (e3 +e4)

to keep eo

≥ 0V

DC SUMMING AMPLIFIER

100kΩ

e O

100kΩ

e 1

1/4

LM290 2

100kΩ

e 2

2kΩ

G ain ad jus t

100kΩ

1/4

LM2902

1/4

LM2902

if R1 =R5 and R3 =R4 =R6 =R7

= [1+

2R1

]

(e2 − e1)

As shown eo = 101 (e2 -e1).

HIGH INPUT Z ADJUSTABLE GAIN DC

INSTRUMENTATION AMPLIFIER

TYPICAL SINGLE - SUPPLY APPLICATIONS

2N 929

0.001µF

3MΩ

Input curre nt

compe ns a tion

e I

1/4

LM2902

1µF

1MΩ

* P olyca rbona te or polyethylene

1/4

LM2902

1/4

LM2902

LOW DRIFT PEAK DETECTOR

LM2902

8/14

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