CPC H03F 3/45475 (2013.01) [H03F 2200/129 (2013.01); H03F 2203/45512 (2013.01)] | 15 Claims |
1. An amplification apparatus comprising:
an amplifier having an inverting terminal, and a non-inverting terminal connected to a reset voltage node;
a first capacitor connected to the inverting terminal, an input voltage being applied to the first capacitor;
a second capacitor connected to the inverting terminal and an output terminal of the amplifier; and
a duty-cycled resistor, connected in parallel to the second capacitor, comprising a first resistor, the duty-cycled resistor being configured to
connect the first resistor and the inverting terminal and to disconnect the first resistor and the reset voltage node during a first time interval included in a period to complete an on-and-off cycle of the duty-cycled resistor, and
disconnect the first resistor and the inverting terminal and to connect the first resistor and the reset voltage node during a second time interval included in the period.
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