US 2010/0164626 A1 · BOOST OPERATIONAL AMPLIFIER

Abstract

A boost operational amplifier. A boot operational amplifier may include a differential amplifying unit amplifying and/or outputting an inputted differential voltage, a first mirroring unit mirroring a current flowing through a first output terminal of a differential amplifying unit, which may output a mirrored first mirror current, a second mirroring unit mirroring a current flowing through a second output terminal of a differential amplifying unit, which may output a mirrored second mirror current, a pull-up transistor connected between a first power source and an output node, which may switch based on a first and/or a second mirror current, and/or a pull-down transistor connected between a second power source and an output node, which may switch based on a first and/or a second mirror current.

Claims20

Dependent claims

An apparatus comprising:

a differential amplifying unit configured to amplify and output an inputted differential voltage;
a first mirroring unit configured to mirror a current flowing through a first output terminal of said differential amplifying unit, said first mirroring unit configured to output a mirrored first mirror current;
a second mirroring unit configured to mirror a current flowing through a second output terminal of said differential amplifying unit, said second mirroring unit configured to output a mirrored second mirror current;
a pull-up transistor connected between a first power source and an output node, said pull-up transistor configured to switch based on said first and second mirror currents;
and
a pull-down transistor connected between a second power source and said output node, said pull-down transistor configured to switch based on said first and second mirror currents.

3 more elements

A method comprising:

forming a differential amplifying unit configured to amplify and output an inputted differential voltage;
forming a first mirroring unit configured to mirror a current flowing through a first output terminal of said differential amplifying unit, said first mirroring unit configured to output a mirrored first mirror current;
forming a second mirroring unit configured to mirror a current flowing through a second output terminal of said differential amplifying unit, said second mirroring unit configured to output a mirrored second mirror current;
forming a pull-up transistor connected between a first power source and an output node, said pull-up transistor configured to switch based on said first and second mirror currents;
and
forming a pull-down transistor connected between a second power source and said output node, said pull-down transistor configured to switch based on said first and second mirror currents.

3 more elements

Dependencies are inferred from the claim text.

Boost operational amplifier

Life of this patent

Boost operational amplifier

Life of this patent

Abstract

Claims20