Lecture_36 - EE 310 Lecture 36 Lecture 36 Page 4 Offset Voltage Compensation Circuits Circuits for use when there are no external compensation

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Input Offset Voltage Effects Technology V OS (V) BJT MOSFET Precision EE 310 Lecture 36 Lecture 36 Page 1
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Origins of Offset Voltage Mismatches in the input differential amplifier give rise to an offset voltage effect: EE 310 Lecture 36 Lecture 36 Page 2
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V OS Calculations v O _ + ( ) Ideal ( ) V OS An op-amp circuit is configured for a noninverting voltage gain of 500 V/V. If V OS magnitude is 5 mV, find the error in v O due to the input offset voltage. EE 310 Lecture 36 Lecture 36 Page 3
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V OS Compensation When Offset-null terminals are available:
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Unformatted text preview: EE 310 Lecture 36 Lecture 36 Page 4 Offset Voltage Compensation Circuits Circuits for use when there are no external compensation terminals on the op amp: Noninverting Inverting EE 310 Lecture 36 Lecture 36 Page 5 Input Bias Current The input transistors require base current to operate in the active region. This current is the op-amp's Input Bias Current . Definitions: EE 310 Lecture 36 Lecture 36 Page 6...
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This note was uploaded on 10/12/2010 for the course E E 310 at Pennsylvania State University, University Park.

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Lecture_36 - EE 310 Lecture 36 Lecture 36 Page 4 Offset Voltage Compensation Circuits Circuits for use when there are no external compensation

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