Title :
Linear amplifiers architectures with very high gain-bandwidth product
Author :
Ramirez-Angulo, Jaime
Author_Institution :
Sch. of Electr. Eng., New Mexico State Univ., Las Cruces, NM, USA
Abstract :
An approach for implementation of amplifiers with high and accurate gain and with very wide bandwidth that is gain independent is introduced. The approach is based on sensing the output current of a unity gain amplifier. The current is then passed to a resistive load through a second stage without negative feedback. Simulations verify it is feasible to obtain gain bandwidth products close to 10 GHz in 1.2 μm CMOS technology. Experimental results of a breadboard and a test chip prototype are used to demonstrate the proposed approach
Keywords :
BiCMOS analogue integrated circuits; CMOS analogue integrated circuits; operational amplifiers; wideband amplifiers; 1.2 micron; CMOS technology; gain independent wide bandwidth; high gain-bandwidth product; linear amplifiers architectures; op amps; output current; resistive load; unity gain amplifier; Bandwidth; Broadband amplifiers; CMOS technology; Impedance; Mirrors; Negative feedback; Negative feedback loops; Operational amplifiers; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780840
