Operational amplifier, Comparator (Tutorial)

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1/51 Application Note 2011 ROHM Co., Ltd. Op-Amp/ Comparator Application Note Operational amplifier , Comparator (Tutorial) This application note explains the general terms and basic techniques that are necessary for configuring application circuits with op-amps and comparators. Refer to this note for guidance when using op-amps and comparators. a Contents 1 What Is Op-Amp/ Comparator ? ........................................ ........................................ ........................................ ........................................ .......... 2 What is op-amp?.

resistor, and AV is the amplification factor of the op-amp. The relation between the input and output voltages is described in the equation (1.1.1). (1.1.1) As shown in Figure 1.1.2 and the equation (1.1.1), the signal voltage VS is divided into resistance voltages by the signal source resistor RS and the input resistor Ri of the op-amp. As

  Voltage, Amplification