Document Type and Number:
Japanese Patent JPH0363848
Kind Code:
B2
Abstract:
An operational amplifier has a bias stage, a sampled differential stage, and a push-pull cascode stage. Unlike the conventional operational amplifier, the sampled differential stage is adopted in place of a differential stage has switches and capacitors. An input signal is transferred to the push-pull cascode stage through the capacitors in cooperation with the switches operated in response to clock signals phase-shifted by 180 DEG , thereby applying optimal bias voltages to the push-pull cascode stage and providing a wide frequency bandwidth.
Inventors:
MASUDA SHINJI
Application Number:
JP20930283A
Publication Date:
October 02, 1991
Filing Date:
November 08, 1983
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H03F3/00; G06G7/12; H03F3/217; H03F3/345; H03H19/00
Next Patent: CACHE MEMORY OF SET ASSOCIATIVE SYSTEM