Transcription of MT-037: Op Amp Input Offset Voltage - Analog …
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MT-037: Op Amp Input Offset Voltage - Analog …
MT-037 TUTORIAL Op Amp Input Offset Voltage DEFINITION OF Input Offset Voltage Ideally, if both inputs of an op amp are at exactly the same Voltage , then the output should be at zero volts. In practice, a small differential Voltage must be applied to the inputs to force the output to zero. This is known as the Input Offset Voltage , VOS. Input Offset Voltage is modeled as a Voltage source, VOS, in series with the inverting Input terminal of the op amp as shown in Figure 1. , 10/08, WK Page 1 of 10 zzzzzzzOffset Voltage : The differential Voltage which must be applied to the Input of an op amp to produce zero :Chopper Stabilized Op Amps:<1 VGeneral Purpose Precision Op Amps:50-500 VBest Bipolar Op Amps:10-25 VBest JFET Input Op Amps:100-1,000 VHigh Speed Op Amps:100-2,000 VUntrimmed CMOS Op Amps:5,0
MT-037 TUTORIAL. Op Amp Input Offset Voltage . DEFINITION OF INPUT OFFSET VOLTAGE . Ideally, if both inputs of an op amp are at exactly the same voltage, then the output should be at
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