ANALOG AMPLIFIERS AND COMPARATORS

摘要

An innovative analog circuit design using digital components is disclosed. Embodiments of the present invention includes, but not limited to analog amplifiers and comparators. An amplifier of an embodiment of the present invention includes an inverter, a plurality of switches, offset capacitor and flying capacitor. The one terminal of the offset capacitor is connected to the input of the inverter. During setup phase of clock signals, the switches are configured to connect input and output of the inverter and to connect the flying capacitor to input terminals of the amplifier, respectively, for storing a differential input voltage. Then, during the enable phase of the clock signals, the switches are configured to connect the first terminal of the second capacitor and the first terminal of the first capacitor, and to connect the second terminal of the second capacitor to the output of the inverter.

主权项

1. An amplifier comprising:
a. an inverter having an input and an output; b. a plurality of switches operable with clock signals providing a setup phase and an enable phase; c. a first capacitor, having a first terminal and a second terminal, and the second terminal of the first capacitor is in communication with the input of the inverter; d. a second capacitor having a first terminal and a second terminal; wherein during the setup phase of the clock signals, the plurality of switches are configured to connect:
the input and the output of the inverter, andthe first and second terminals of the second capacitor to first and second input terminals of the amplifier, respectively, for storing a differential input voltage; and during the enable phase of the clock signals, the plurality of switches are configured to connect:
the first terminal of the second capacitor and the first terminal of the first capacitor, andthe second terminal of the second capacitor to the output of the inverter.