OpAmps7Ed - CIRCUITSWITHOPERATIONALAMPLIFIERS...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
CIRCUITS WITH OPERATIONAL AMPLIFIERS hy do we study them at this point??? 1. OpAmps are very useful electronic components 2. We have already the tools to analyze practical circui      using OpAmps 3. The linear models for OpAmps include dependent source COMMERCIAL PACKAGING OF TYPICAL OP-AMP 
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
P-AMP ASSEMBLED ON PRINTED CIRCUIT BOARD LMC 6294 DIP PIN OUT FOR LM324 DIMENSIONAL DIAGRAM LM 324
Background image of page 2
CIRCUIT SYMBOL FOR AN OP-AMP LINEAR MODEL OUTPUT RESISTANCE INPUT RESISTANCE GAIN 7 5 12 5 10 10 : 50 1 : 10 10 : - - - A R R O i TYPICAL VALUES
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
CIRCUIT WITH OPERATIONAL AMPLIFIER DRIVING CIRCUIT LOAD OP-AMP MANUFACTURER PART No A Ri[MOhm] Ro[Ohm] National LM324 100,000 1 20 National LMC6492 50,000 10 150 Maxim MAX4240 20,000 45 160 COMMERCIAL OP-AMPS AND THEIR MODEL VALUES
Background image of page 4
CIRCUIT AND MODEL FOR UNITY GAIN BUFFER 0 = + + + - in O O i s V A I R I R V    : KVL 0 = + + in O O V A I R out V -    : KVL I R V i in =    :   VARIABLE G CONTROLLIN i O O i s out R A R R V V + + = 1 1 SOLVING 1 S out O V V A WHY UNIT GAIN BUFFER ? BUFFER GAIN PERFORMANCE OF REAL OP-AMPS Op-Amp BUFFER GAIN LM324 0.99999 LMC6492 0.9998 MAX4240 0.99995
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
= A ) ( 0 - + - = = v v A v R O O THE IDEAL OP-AMP = i R = = = A R R i O , , 0 IDEAL  + i - i
Background image of page 6
THE VOLTAGE FOLLOWER OR UNITY GAIN BUFFER s v v = + + - = v v - = v v O S O v v = CONNECTION WITHOUT BUFFER CONNECTION WITH BUFFER S O v v = THE VOLTAGE FOLLOWER ACTS AS  BUFFER AMPLIFIER THE SOURCE SUPPLIES POWER THE SOURCE SUPPLIES NO POWER THE VOLTAGE FOLLOWER ISOLATES ONE CIRCUIT FROM ANOTHER ESPECIALLY USEFUL IF THE SOURCE HAS VERY LITTLE POWER
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
LEARNING EXAMPLE s out V V G =    GAIN    THE    DETERMINE 0 = + v 0 = = = - - + v v v A o 0 = - v 0 = = = + - i i R i 0 0 0 2 1 = - + - R V R V out s -  v @ KCL  APPLY  0 = - i 1 2 R R V V G s out - = = NEXT WE EXAMINE THE SAME CIRCUIT WITHOUT THE ASSUMPTION OF IDEAL OP-AMP
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/01/2012 for the course EEL 3041 taught by Professor Haroldklee during the Spring '12 term at University of Central Florida.

Page1 / 27

OpAmps7Ed - CIRCUITSWITHOPERATIONALAMPLIFIERS...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online