Title | ||
---|---|---|
22.8 A 24-to-35Gb/s x4 VCSEL driver IC with multi-rate referenceless CDR in 0.13um SiGe BiCMOS |
Abstract | ||
---|---|---|
The optical interconnect technologies are a promising solution for high-speed and high-density interconnects because of the high-bandwidth and low-crosstalk properties of optical signals. The next challenge for optical interconnects is to move to a serial data-rate of 25Gb/s or higher [1,2]. To achieve flexible interconnects on a bandwidth demand, a CDR is required to operate at multiple rates in a wide tuning range. A selectable multi-VCO structure is one method to overcome this issue. However, when multi-VCOs are allocated in each channel, the large size of VCOs makes it difficult to achieve a high-density optical link. In this paper, we presenta dual-loop hybrid CDR including a phase interpolator (PI) loop for phase tracking and a common VCO loop situated outside the channel areas for frequency acquisition. We develop a quadrant-switching analog Pl-loop that has the ability to track the frequency mismatch corresponding to full-rate frequency up to 35Gb/s. The 4-channel driver IC with this dual-loop hybrid CDR is fabricated in 0.13μm SiGe BiCMOS technology. With these circuits, we achieve a driver IC with a multi-rate, ranging from 24 to 35Gb/s, reference-less CDR for flexible optical interconnects. |
Year | DOI | Venue |
---|---|---|
2015 | 10.1109/ISSCC.2015.7063102 | ISSCC |
Keywords | Field | DocType |
control systems,integrated circuits,detectors | Optical link,BiCMOS,Computer science,Voltage-controlled oscillator,Electronic engineering,Ranging,Bandwidth (signal processing),Electronic circuit,Electrical engineering,Integrated circuit,Optical interconnect | Conference |
Citations | PageRank | References |
0 | 0.34 | 3 |
Authors | ||
8 |
Name | Order | Citations | PageRank |
---|---|---|---|
Yukito Tsunoda | 1 | 33 | 7.23 |
Takayuki Shibasaki | 2 | 66 | 12.00 |
Satoshi Ide | 3 | 40 | 7.35 |
Toshihiko Mori | 4 | 20 | 6.30 |
Yoichi Koyanagi | 5 | 68 | 13.60 |
Kazuhiro Tanaka | 6 | 3 | 2.22 |
Tomohiro ISHIHARA | 7 | 6 | 2.62 |
Hirotaka Tamura | 8 | 204 | 32.19 |