Electronic Devices-Basic Op-Amp Circuits

Electronic Devices-Basic Op-Amp Circuits
21. Operational amplifiers are never used as nonlinear devices.
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22. In an op-amp comparator, when the input voltage exceeds a reference voltage, the voltage output changes state.
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23. The R/2R ladder is commonly used for D/A converters.
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24. Bounding allows the output of a comparator to be an unlimited voltage.
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25. The difference between the UTP and the LTP is the hysteresis voltage.
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26. The output of an op-amp comparator will be zero when the input voltage exceeds the reference voltage.
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27. A positive feedback network for hysteresis improves an op-amp comparator's noise immunity.
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