Abstract: A very high bandwidth class AB (Push-Pull) current amplifier using the compensation resistor technique is presented and analyzed. Such technique stands as a powerful method of bandwidth enhancement for general circuits using CMOS current mirrors. The proposed bandwidth is enhanced from 675 MHz for the uncompensated current amplifier to 745MHz for the compensated one without affecting the current gain and other design parameters such as power consumption and output swing. The circuit exhibits a current gain of 20 dB and consumes 1.48 mW for $\pm$2.5V power supply voltage. All simulation results were performed using Hspice tool with 0.35$\mu$m CMOS TSMC parameters.
Keywords: Microelectronics, current mode, CMOS technology, analog integrated circuits, class AB amplifiers, compensation resistor technique.