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Lect_15 - ECE 442 ECE 442 SolidState Devices Circuits 15...

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ECE 442 Solid State Devices & Circuits 15. Differential Amplifiers Jose E. Schutt-Aine Electrical & Computer Engineering University of Illinois [email protected] ECE 442 – Jose Schutt Aine 1
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Background Diff ti l A lifi Differential Amplifiers – The input stage of every op amp is a differential amplifier – Immunity to temperature effects – Ability to amplify dc signals Ability to amplify dc signals – Well-suited for IC fabrication because – (a) they depend on matching of elements – (b) they use more components – Less sensitive to noise and interference Enable to bias amplifier and connect to other – Enable to bias amplifier and connect to other stage without the use of coupling capacitors ECE 442 – Jose Schutt Aine 2
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