Title :
New low-voltage fully-balanced wide-band differential CMOS current amplifier
Author :
Sun, Bendong ; Yuan, Fei
Author_Institution :
Dept. of Electr. & Comput. Eng., Ryerson Univ., Toronto, Ont., Canada
Abstract :
This paper presents a new low-voltage fully balanced wide-band differential CMOS current amplifier. The number of transistors between the power and ground rails is minimum so that the minimum supply voltage is needed. The circuit is fully balanced such that the effect of bias-induced mismatches is eliminated. In addition, a differential configuration is employed to minimize the fluctuation of the power and ground caused by the switching of the digital portion of mixed-mode circuits. A new differential negative current-current feedback mechanism is introduced to lower the input impedance and increase the bandwidth. The proposed amplifier is implemented in a 0.18 μm 1.8 V CMOS process and analyzed using SPICE. The results are presented.
Keywords :
CMOS analogue integrated circuits; circuit simulation; current-mode circuits; differential amplifiers; feedback amplifiers; integrated circuit design; low-power electronics; microwave amplifiers; wideband amplifiers; 0.18 micron; 1.8 V; 25.3 dB; 3.5 GHz; CMOS current amplifier; CMOS current-mode circuits; bias-induced mismatch elimination; differential negative current feedback mechanism; fully-balanced current amplifier; input impedance reduction; low-voltage amplifier; supply voltage minimization; wide-band differential current amplifier; Bandwidth; Broadband amplifiers; CMOS process; Differential amplifiers; Fluctuations; Impedance; Negative feedback; Rails; Switching circuits; Voltage;
Conference_Titel :
Circuits and Systems, 2002. MWSCAS-2002. The 2002 45th Midwest Symposium on
Print_ISBN :
0-7803-7523-8
DOI :
10.1109/MWSCAS.2002.1186796
