7.5 Gb/s monolithically integrated clock recovery using PLL and 0.3 μM gate length quantum well HEMTs

Autor: Wang, Zhigong, Berroth, Manfred, Nowotny, Ulrich, Hofmann, Peter, Hülsmann, Axel, Köhler, Klaus, Raynor, Brian, Schneider, Joachim
Jazyk: angličtina
Rok vydání: 2014
Předmět:
DOI: 10.18419/opus-8204
Popis: A monolithically integrated clock recovery (CR) circuit making use of the phase-locked loop (PLL) circuit technique and enhancement/depletion AlGaAs/GaAs quantum well high electron mobility transistors (QW-HEMTs) with gate lengths of 0.3 μm has been realized. A novel preprocessing circuit was used. In the PLL a fully-balanced varactorless VCO has been introduced. The VCO has a centre oscillating frequency of about 7.5 GHz and a tuning range greater than 500 MHz. A satisfactory clock signal has been obtained at the bit rate of about 7.5 Gb/s. The power consumption is less than 200 mW at the supply voltage of -5 V.
Databáze: OpenAIRE