Patent Number: 7,786,794

Title: Amplifier circuit

Abstract: An amplifier circuit is disclosed that includes a first input terminal; a second input terminal; a first differential amplifier circuit that samples signals input to the first and second input terminals and outputs signals obtained by applying a gain to the sampled input signals having different voltages; and a second differential amplifier circuit that supplies first and second reference voltages referred to when a sampling operation is performed in the first differential amplifier circuit to the first and second input terminals, respectively. A potential difference between the first and second reference voltages is equal to an offset voltage of the first differential amplifier circuit.

Inventors: Murakami; Hideaki (Hyogo, JP)

Assignee: Ricoh Company, Ltd.

International Classification: H03F 1/02 (20060101)

Expiration Date: 8/31/12018