Introduction

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Introduction

1/23/2011Comparison of Operational Amplifier CharacteristicIdeal CharacteristicPerfect balance Q1 = Q2Zero offset VoltageZero offset currentFeatures that do not drift withtemperatureinfinite bandwidthReal Characteristic Q1 ≠ Q2Min offset voltage = 2 mvMin offset current = 100 nABeta drift with temperatureBandwidth = 1 Mhz43Advantages of Operational AmplifierSmall sizeHigh reliablityLower priceCan operate at low temperature rangeHave low voltage and current offset.4422

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