A new CMOS class AB serial link transmitter with a low supply voltage sensitivity

  • Authors:
  • Fei Yuan;Minghai Li

  • Affiliations:
  • Department of Electrical and Computer Engineering, Ryerson University, Toronto, Canada M5B 2K3;Micron Technology Inc., Boise, USA

  • Venue:
  • Analog Integrated Circuits and Signal Processing
  • Year:
  • 2006

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Abstract

This paper presents a new class AB transmitter with a low supply voltage/ground bouncing sensitivity for 10 Gb/s serial links. The low sensitivity of the output current to supply voltage fluctuation and ground bouncing is achieved by operating the system in a rail-to-rail swing mode. High data rates are obtained by multiplexing at low-impedance nodes and inductive shunt peaking with active inductors. The fully differential configuration and bipolar signaling of the transmitter minimize the effect of both common-mode disturbances and electro-magnetic interferences exerted from channels to neighboring devices. The class AB operation of the transmitter minimizes its static power consumption. The proposed transmitter is implemented in a 1.2 V 0.13驴m CMOS technology and analyzed using Spectre from Cadence Design Systems with BSIM3v3 device models. Both pre and post-layout simulation results demonstrate that the transmitter conveys a sufficiently large differential output current that is insensitive to supply voltage fluctuation and ground bouncing at 10 Gb/s.