TY - JOUR
T1 - A 12-Gb/s 10-ns turn-on time rapid on/off baud-rate dfe receiver in 65-nm cmos
AU - Kim, Dongwook
AU - Ahmed, Mostafa G.
AU - Choi, Woo Seok
AU - Elkholy, Ahmed
AU - Hanumolu, Pavan Kumar
N1 - Manuscript received August 4, 2019; revised December 1, 2019 and February 2, 2020; accepted February 16, 2020. Date of publication March 16, 2020; date of current version July 23, 2020. This article was approved by Associate Editor Hui Pan. This work was supported in part by Semiconductor Research Corporation under the Texas Analog Center of Excellence (TxACE) under Grant 2712.009. (Corresponding author: Dongwook Kim.) Dongwook Kim is with Apple Inc., West Lake Hills, TX 78746 USA (e-mail: [email protected]). Mostafa G. Ahmed and Pavan Kumar Hanumolu are with the Department of Electrical and Computer Engineering, University of Illinois Urbana– Champaign, Urbana, IL 61801 USA. Woo-Seok Choi is with the Department of Electrical and Computer Engineering, Seoul National University, Seoul 08826, South Korea. Ahmed Elkholy is with Broadcom Corporation, Irvine, CA 92618 USA. Color versions of one or more of the figures in this article are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/JSSC.2020.2978138
PY - 2020/8
Y1 - 2020/8
N2 - Rapid ON/OFF (ROO) operation helps scale power in accordance with link utilization. In this article, we present a baud-rate ROO receiver that can turn on in just 10 ns (120 UI). Baud-rate clock and data recovery (CDR) is implemented using a new timing function that is amenable to operation with a loop un-rolled decision feedback equalizer (DFE). The receiver is turned on rapidly by sweeping the recovered clock phase across the received data bit by offsetting the digitally controlled oscillator (DCO) frequency at each power-ON event. This first ROO DFE receiver also includes a continuous-Time linear equalizer (CTLE) and three-Tap DFE to compensate up to 20-dB channel loss at Nyquist. Fabricated in a 65-nm CMOS process, the prototype receiver recovers 12 Gb/s with BER < 10-12 and achieves a >30-MHz JTOL corner, 377 fs_{\text {rms}} recovered clock jitter, and 3.8-pJ/bit energy efficiency.
AB - Rapid ON/OFF (ROO) operation helps scale power in accordance with link utilization. In this article, we present a baud-rate ROO receiver that can turn on in just 10 ns (120 UI). Baud-rate clock and data recovery (CDR) is implemented using a new timing function that is amenable to operation with a loop un-rolled decision feedback equalizer (DFE). The receiver is turned on rapidly by sweeping the recovered clock phase across the received data bit by offsetting the digitally controlled oscillator (DCO) frequency at each power-ON event. This first ROO DFE receiver also includes a continuous-Time linear equalizer (CTLE) and three-Tap DFE to compensate up to 20-dB channel loss at Nyquist. Fabricated in a 65-nm CMOS process, the prototype receiver recovers 12 Gb/s with BER < 10-12 and achieves a >30-MHz JTOL corner, 377 fs_{\text {rms}} recovered clock jitter, and 3.8-pJ/bit energy efficiency.
KW - Baud rate
KW - burst mode
KW - clock and data recovery (CDR)
KW - decision feedback equalizer (DFE)
KW - rapid ON/OFF (ROO)
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U2 - 10.1109/JSSC.2020.2978138
DO - 10.1109/JSSC.2020.2978138
M3 - Article
AN - SCOPUS:85081624269
SN - 0018-9200
VL - 55
SP - 2196
EP - 2205
JO - IEEE Journal of Solid-State Circuits
JF - IEEE Journal of Solid-State Circuits
IS - 8
M1 - 9036902
ER -