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Title-Solutions for CMOS Current Amplifier with High-Drive Output Stages
Authors-Giuseppe Palmisano, Associate Member, IEEE, Gaetano Palumbo, Senior Member, IEEE, and Salvatore Pennisi
Abstract—Design guidelines for CMOS current amplifiers with a high-drive capability are discussed in detail, paying special attention to the implementation of output stages with improved linearity performance. As a design example, two different current amplifiers were realized in a 1.2- m process and experimentally tested. Both circuits used a 5-V power supply and dissipated 5.5 and 4 mW, respectively. The open-loop gain was found to be 90 and 100 dB and the gain-bandwidth product was 8 and 10 MHz. The two amplifiers provide bipolar output currents as high as 15 and 7 mA, with a maximum total harmonic distortion of around 54 dB, using a quiescent current in the output branches of only 200 A.
Index Terms—CMOS analog integrated circuits, current mode, integrated circuit design, operational amplifiers, power amplifiers. |
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发表于 2006-11-1 20:42:10
