Name
Abstract | ||
|---|---|---|
A burst-mode transmitter achieves 6 ns turn-on time by utilizing a fast frequency settling ring oscillator in digital multiplying delay-locked loop and a rapid on-off biasing scheme for current mode output driver. The resistor tuning-based ring oscillator avoids the use of bias voltages and thereby eliminates the related settling time overhead. The calibrated rapid on-off biasing circuit utilizes a fast charging technique to achieve bias voltage settling time of 4 ns, resulting in 30X improvement over a diode-connected bias circuit. Fabricated in 90 nm CMOS process, the prototype achieves 2.29 mW/Gb/s energy efficiency at peak data rate of 8 Gb/s. A 125X (8 Gb/s to 64 Mb/s) change in effective data rate results in 67X (18.29 mW to 0.27 mW) change in transmitter power consumption corresponding to only 2X (2.29 mW/Gb/s to 4.24 mW/Gb/s) degradation in energy efficiency for 32 byte long data bursts. We also present an analytical bit error rate (BER) computation technique for rapid on-off links, which uses MDLL settling measurement data in conjunction with always-on transmitter measurements. This technique indicates that the BER bathtub width for 10-12 BER is 0.65 UI and 0.72 UI during rapid on-off operation and always-on operation, respectively. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/JSSC.2014.2348317 | Solid-State Circuits, IEEE Journal of |
Keywords | DocType | Volume |
CMOS analogue integrated circuits,delay lock loops,error statistics,oscillators,BER computation technique,CMOS process,MDLL settling measurement data,always-on transmitter measurements,analytical bit error rate computation technique,bit rate 8 Mbit/s to 64 Mbit/s,burst-mode transmitter,current mode output driver,digital multiplying delay-locked loop,diode-connected bias circuit,energy efficiency,fast charging technique,fast frequency settling ring oscillator,rapid on-off biasing scheme,resistor tuning,size 90 nm,time 4 ns,time 6 ns,transmitter power consumption,Bit error rate,current mode logic (CML) output driver,digital multiplying delay-locked loop (MDLL),digitally-controlled ring oscillator (DCO),energy-proportional operation,fast turn-on clock multiplier,rapid on-off bias | Journal | 49 |
Issue | ISSN | Citations |
10 | 0018-9200 | 0 |
PageRank | References | Authors |
0.34 | 0 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Talegaonkar, M. | 1 | 0 | 0.34 |
| Elshazly, A. | 2 | 0 | 0.34 |
| Reddy, K. | 3 | 0 | 0.34 |
| Prabha, P. | 4 | 0 | 0.34 |