| 摘要 |
The present invention provides a current comparator that reduces both input and output resistance. The current comparator positions a resistive feedback network in a first inverting amplifier of an input stage. The input stage according to the present invention can include a first and a second input terminal, an output terminal, a reference current source, a load circuit, a driving unit, and a resistive circuit. The reference current source supplies a reference current to the first input terminal. The load circuit supplies a first current to the output terminal. The first current is preferably equal to the reference current. The driving unit generates a prescribed output voltage by controlling the first current based on an input current applied to the second input terminal. The resistor is coupled between a control terminal of the driving unit, the second input terminal and the output terminal.
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