JSTS:Journal of Semiconductor Technology and Science

The Institute of Electronics and Information Engineers (대한전자공학회)
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A 6-Gb/s Differential Voltage Mode Driver with Independent Control of Output Impedance and Pre-Emphasis Level

  • Bae, Chang-Hyun (Integrated Circuits Lab., Hanyang University, DRAM Design Department of Samsung Electronics) ;
  • Choi, Dong-Ho (Integrated Circuits Lab., Hanyang University) ;
  • Ahn, Keun-Seon (Integrated Circuits Lab., Hanyang University) ;
  • Yoo, Changsik (Integrated Circuits Lab., Hanyang University)
  • Received : 2012.11.09
  • Accepted : 2013.05.28
  • Published : 2013.10.31
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Abstract

A 6-Gb/s differential voltage mode driver is presented whose output impedance and pre-emphasis level can be controlled independently. The voltage mode driver consists of five binary-weighted slices each of which has four sub-drivers. The output impedance is controlled by the number of enabled slices while the pre-emphasis level is determined by how many sub-drivers in the enabled slices are driven by post-cursor input. A prototype transmitter with a voltage-mode driver implemented in a 65-nm CMOS logic process consumes 34.8-mW from a 1.2-V power supply and its pre-emphasized output signal shows 165-mVpp,diff and 0.56-UI eye opening at the end of a cable with 10-dB loss at 3-GHz.

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References

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