| 摘要 |
A switched-capacitor integrator eliminates noise caused by the switching of an input signal. For this purpose, the integrator includes a switched-capacitor unit for providing a capacitor with one of a first and a second input voltage in response to clock signals, a reference voltage providing unit for receiving a reference voltage and outputting an amplified reference voltage, a switching noise eliminating unit for maintaining an output of the reference voltage providing unit at a stabilized voltage level, an operational amplifying unit for receiving an output of the switched-capacitor unit as its negative input and the output of the reference voltage providing unit passed through the switching noise eliminating unit as its positive input and a feedback capacitor for feeding back an output of the operational amplifying unit to the negative input.
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