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A CMOS single stage fully differential folded cascode amplifier employing gain boosting technique

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2 Author(s)
Enche Ab Rahim, S.A. ; Adv. Phys. Technol. Lab., TM R&D Sdn. Bhd., Cyberjaya, Malaysia ; Azmi, I.M.

In this paper, a single stage fully differential folded cascode amplifier using gain boosting technique is presented. The amplifier was initially designed for 12 bits 22 MSPS pipelined analog-to-digital converter (ADC). However, the amplifier alone could not provide a sufficient DC gain in order to meet the ADC requirement. In order to obtain higher DC gain, a gain boosting technique was employed for this op-amp. The amplifier was implemented in 0.13μm CMOS process technology. The simulation results show that this amplifier has a DC gain of 95dB, a unity gain bandwidth of 414 MHz and a phase margin of 82 degrees.

Published in:

Integrated Circuits (ISIC), 2011 13th International Symposium on

Date of Conference:

12-14 Dec. 2011