A new multipath amplifier design technique for enhancing gain without sacrificing bandwidth

A new multistage multipath amplifier design technique is introduced that combines the formerly distinct phases of stage design and compensation. The result is an inherently stable n-stage amplifier whose gain-bandwidth product is not compromised as the number of stages is increased. The technique relies upon (n - 1) systematic pole-zero cancellations to achieve a near first-order open-loop system transfer function. The resultant amplifier architectures are attractive for realization in low-voltage processes because they accumulategain using horizontal techniques (cascading) rather than vertical techniques (device stacking).

• Type: Conference
• Year: 1999
• Where: ISCAS
• Authors: M. E. Schlarmann, E. K. F. Lee, Randall L. Geiger
• Keywords: Hardware, ISCAS 1999, Multipath Amplifier Design, Stable N-stage Amplifier, Systematic Pole-zero Cancellations