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LMR321GFVT-E2 Datasheet(PDF) 30 Page - Rohm

Part # LMR321GFVT-E2
Description  Ground sense Low Power General Purpose Operational amplifiers
PDF  41 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

LMR321GFVT-E2 Datasheet(HTML) 30 Page - Rohm

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Datasheet
www.rohm.com
TSZ02201-0RAR1G200560-1-2
© 2012 ROHM Co., Ltd. All rights reserved.
30/38
30.NOV.2012 Rev.001
TSZ22111･15･001
LMR321G, LMR358xxx, LMR324xxx
Application example
○Voltage Follower
○Inverting amplifier
○Non-inverting amplifier
Figure 78. Voltage follower
Voltage gain is 0 dB.
This circuit controls output voltage (OUT) equal input
voltage (IN), and keeps OUT with stable because of high
input impedance and low output impedance.
OUT is shown next expression.
OUT=IN
VSS
OUT
IN
VDD
Figure 79.
Inverting amplifier
For inverting amplifier, IN is amplified by voltage gain
decided R1 and R2, and phase reversed voltage is
output.
OUT is shown next expression.
OUT=-(R2/R1)・IN
Input impedance is R1.
R2
R1
VSS
R1//R2
IN
VDD
Figure 80. Non-inverting amplifier
For non-inverting amplifier, IN is amplified by voltage
gain decided R1 and R2, and phase is same with Vin.
OUT is shown next expression.
OUT=(1+R2/R1)・IN
This circuit performes high input impedance because
Input
impedance
is
operational
amplifier’s
input
Impedance.
VSS
R2
VDD
IN
OUT
R1
OUT



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