Title :
An Adaptation Engine for a 2x Blind ADC-Based CDR in 65 nm CMOS
Author :
Abiri, Behrooz ; Sheikholeslami, Ali ; Tamura, Hirotaka ; Kibune, Masaya
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
This paper proposes an adaptation engine for a 2 blind sampling ADC-based receiver. The proposed adaptive engine uses a triangular desired waveform, instead of two fixed desired levels, to shape the equalizer output in spite of blind nature of sampling. The measured results confirm the adaptive engine restores a 5 Gb/s eye subjected to 13 dB of attenuation at Nyquist frequency to an equivalent of 320 mV of vertical opening. The receiver consumes 192 mW, out of which 78 mW is used by the digital CDR.
Keywords :
CMOS digital integrated circuits; Nyquist criterion; analogue-digital conversion; clock and data recovery circuits; receivers; 2x blind ADC-based CDR; CMOS 2x blind sampling ADC-based receiver; Nyquist frequency; adaptation engine; digital CDR; size 65 nm; triangular desired waveform; Decision feedback equalizers; Receivers; ADC; Adaptation; CDR; DFE; blind sampling; equalizer;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2011.2169183
