A 2-Gbaud 0.7-V swing voltage-mode driver and on-chip terminator for high-speed NRZ data transmission

Citation
G. Ahn et al., A 2-Gbaud 0.7-V swing voltage-mode driver and on-chip terminator for high-speed NRZ data transmission, IEEE J SOLI, 35(6), 2000, pp. 915-918
Citations number
6
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
IEEE JOURNAL OF SOLID-STATE CIRCUITS
ISSN journal
00189200 → ACNP
Volume
35
Issue
6
Year of publication
2000
Pages
915 - 918
Database
ISI
SICI code
0018-9200(200006)35:6<915:A20SVD>2.0.ZU;2-6
Abstract
A large-swing, voltage-mode driver and an on-chip termination circuit are p resented for high-speed nonreturn-to-zero (NRZ) data transmission through a copper cable. The proposed driver with active pull-up and pull-down can ge nerate a 700-mV signal to deliver a 2-Gbaud serial NRZ data stream. Low out put impedance offered by simple negative-feedback resistors alleviates the detrimental effect of the parasitic capacitance by supplying fast curl ent impulses. A proposed on-chip termination circuit provides termination imped ance to a mid-supply termination voltage with the benefit of reduced parasi tic capacitance and better termination characteristics compared with off-ch ip termination. The driver and termination circuits have been incorporated in a 2-Gbaud transceiver chip and fabricated in 0.35-mu m CMOS technology. Measurements show a 1.4-V differential swing with a slew rate of 2.5 V/ns a t the receiver output and a 65% reduction of reflection by the on-chip term ination circuit with power consumption of 191 mW at 3.3-V supply.