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LM2902 数据表(PDF) 9 Page - STMicroelectronics

部件名 LM2902
功能描述  LOW POWER QUAD OPERATIONAL AMPLIFIERS
PDF  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

LM2902 数据表(HTML) 9 Page - STMicroelectronics

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background image
R3
10kΩ
1/4
LM2902
e
1
e
O
R8
100kΩ
R7
100kΩ
C3
10µF
VCC
R5
470kΩ
C2
330pF
R4
10MΩ
R6
470kΩ
R1
100k Ω
C1
330pF
1/4
LM2902
1/4
LM2902
FO = 1kHz
Q= 50
AV = 100 (40dB)
ACTIVER BANDPASS FILTER
1/4
LM29 0 2
R1
100kΩ
R2
100kΩ
R4
100kΩ
R3
100kΩ
+V2
+V1
Vo
1/4
LM29 02
eo
(1+
R4
R3
)(e2− e1)
As shown eo =(e2 -e1)
For
R1
R2
=
R4
R3
(CMRR depends on this resistor ratio match)
HIGH INPUT Z, DC DIFFERENTIAL AMPLIFIER
1/4
LM2902
IB
2N 929
0.001µF
IB
3MΩ
IB
e o
I
I
e I
IB
IB
Aux. a mplifier for input
curre nt compe ns a tion
1.5MΩ
1/4
LM2902
USING SYMMETRICAL AMPLIFIERS TO REDUCE INPUT CURRENT (GENERAL CONCEPT)
TYPICAL SINGLE - SUPPLY APPLICATIONS
LM2902
9/14



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