Title :
Fully differential current operational amplifier
Author :
Jun, Sibum ; Kim, Dae Mann
Author_Institution :
Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol., South Korea
fDate :
1/8/1998 12:00:00 AM
Abstract :
A fully differential, wide bandwidth and good CMRR current operational amplifier is presented. The proposed circuit employs a tapped cascode current mirror as an input stage and simple common source stages as an output stage. To enhance the common-mode rejection ratio (CMRR), a high impedance node is implemented by two cross-coupled simple current mirrors. SPICE simulation is carried out
Keywords :
SPICE; circuit analysis computing; differential amplifiers; operational amplifiers; CMRR; SPICE simulation; bandwidth; common source stages; common-mode rejection ratio; cross-coupled simple current mirrors; differential current operational amplifier; high impedance node; tapped cascode current mirror;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19980106
