1. A 1-GHz, multibit, continuous-time, delta–sigma ADC for Gigabit Ethernet
- Author
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Arias, J., Quintanilla, L., Enríquez, L., Hernández-Mangas, J., Vicente, J., and Segundo, J.
- Subjects
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ELECTRONIC modulators , *GIGABIT Ethernet , *ETHERNET , *INTEGRATED circuits , *COMPUTER simulation , *COMPLEMENTARY metal oxide semiconductors , *ENERGY consumption - Abstract
Abstract: In this work the design of a continuous-time modulator for Gigabit Ethernet applications is presented. The input bandwidth and oversampling ratio are, respectively, 62.5MHz and 8, resulting in a clock frequency of 1GHz. It was designed and implemented in a standard 90nm CMOS technology. The active area of the modulator measures . It consists of a loop filter based on RC-opamp integrators and a 3-bit quantizer which includes a data weighted averaging scrambler. A digital tuning scheme to deal with process variations has also been included. System level simulations including several non-ideal effects have been carried out in order to determine in detail the performance of the converter. Experimental results show a resolution of 7.1 effective bits, and a power consumption of 10.8mW from a nominal power supply of 1V. [Copyright &y& Elsevier]
- Published
- 2008
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