Title :
A 200 MHz steered current operational amplifier in 1.2-μm CMOS technology
Author :
Abou-Allam, Eyad ; El-Masry, Ezz I.
Author_Institution :
Dept. of Electr. Eng., Tech. Univ. Nova Scotia, Halifax, NS, Canada
fDate :
2/1/1997 12:00:00 AM
Abstract :
In this paper, we present the design of a CMOS current operational amplifier (COA). A design technique based on current steering is proposed to enhance the frequency capability of the amplifier and achieve higher bandwidth of operation. A complete COA was designed and fabricated using a 1.2-μm CMOS technology, the COA occupies an area of 0.13 mm2. Results from HSPICE simulations and measurements indicate an open-loop gain of 70 dB, a gain-bandwidth product exceeding 200 MHz, and a settling time of 5.1 ns. The amplifier operated under ±3 V DC voltage supplies, and the power dissipation is approximately 4.5 mW
Keywords :
CMOS analogue integrated circuits; operational amplifiers; wideband amplifiers; -3 V; 1.2 micron; 200 MHz; 3 V; 4.5 mW; 70 dB; CMOS current operational amplifier; bandwidth; design technique; frequency capability enhancement; steered current op amp; Bandwidth; CMOS technology; Frequency; Gain measurement; Operational amplifiers; Power amplifiers; Power dissipation; Power supplies; Time measurement; Voltage;
Journal_Title :
Solid-State Circuits, IEEE Journal of
