Name
Title | ||
|---|---|---|
A 26–28-Gb/s Full-Rate Clock and Data Recovery Circuit With Embedded Equalizer in 65-nm CMOS |
Abstract | ||
|---|---|---|
This paper presents a power and area efficient approach to embed a continuous-time linear equalizer (CTLE) within a clock and data recovery (CDR) circuit implemented in 65-nm CMOS. The merged equalizer/CDR circuit achieves full-rate operation up to 28 Gb/s while drawing 104 mA from a 1-V supply and occupying 0.33 mm2. Current-mode-logic (CML) circuits with shunt peaking loads using customized differential pair layout are used to maximize circuit bandwidth. To minimize the area penalty, differential stacked spiral inductors (DSSIs) are employed extensively. A novel and practical methodology is introduced for designing DSSIs based on single-layer inductors provided in foundry process design kits (PDK). The DSSI design increases the inductance density by over 3 times and the self-resonance frequency by 20% compared to standard single-layer inductors in the PDK. The measured BER of the recovered data by the CDR is less than 10-12 at 27 Gb/s for 211-1 400 mV PP pseudo-random binary sequence (PRBS) as input data. The measured rms jitter of the recovered clock and data are 1.0 and 2.6 ps, respectively. The CDR is able to lock to inputs ranging from 26 to 28 Gb/s with 29-1 PRBS pattern. Measurement results show that with the equalizer enabled, the CDR can recover a 26-Gb/s 27-1 PRBS data with BER ≤ 10-12 after a channel with 9-dB loss at 13 GHz. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TCSI.2014.2304669 | IEEE Trans. on Circuits and Systems |
Keywords | Field | DocType |
frequency 13 ghz,differential stacked spiral inductor,cmos integrated circuits,bit error rate,continuous time linear equalizer,current 104 ma,full-rate clock and data recovery circuit,bit rate 26 gbit/s to 28 gbit/s,binary sequences,size 65 nm,pseudorandom binary sequence,current-mode logic,embedded equalizer,dssi,continuous-time linear equalizer,foundries,prbs,ctle,clock and data recovery,differential pair layout,cmos technology,voltage 1 v,continuous time systems,foundry process design kits,pdk,equalisers,embedded systems,differential stacked spiral inductors,error statistics,current mode logic circuits,clock and data recovery circuits,area penalty,inductors,single-layer inductors,random sequences,bandwidth,jitter,transfer functions | Inductance,Pseudorandom binary sequence,Inductor,Full Rate,Electronic engineering,CMOS,Bandwidth (signal processing),Jitter,Electronic circuit,Mathematics | Journal |
Volume | Issue | ISSN |
61 | 7 | 1549-8328 |
Citations | PageRank | References |
3 | 0.44 | 5 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Li Sun | 1 | 3 | 0.44 |
| Quan Pan | 2 | 521 | 40.66 |
| Keh-Chung Wang | 3 | 3 | 0.44 |
| C. Patrick Yue | 4 | 148 | 41.70 |