A Current-Steering DAC Architecture with Novel Switching Scheme for GPON Burst-Mode Laser Drivers

Autor:	Wei Chen, Xing-Zhi Qiu, Peter Ossieur, Jan Vandewege, Johan Bauwelinck
Rok vydání:	2007
Předmět:	Engineering Technology and Engineering Differential nonlinearity Settling time business.industry Linearity Integrated circuit design BiCMOS Chip Electronic Optical and Magnetic Materials Current mirror Electronic engineering Electrical and Electronic Engineering business Burst mode (computing)
Zdroj:	IEICE TRANSACTIONS ON ELECTRONICS
ISSN:	1745-1353 0916-8524
Popis:	SUMMARY This paper describes a current-steering Digital-to-Analog Converter (IDAC) architecture with a novel switching scheme, designed for GPON Burst Mode Laser Drivers (BMLD) and realized in a 0.35 µ mS iGe BiCMOS technology with 3.3 V power supply. The (4+6) segmented architecture of the proposed 10-bit IDAC is optimized for minimum DNL (Differential Nonlinearity). It combines a 4-bit MSBs (Most Significant Bits) unit-element sub-DAC and a 6-bit LSBs (Least Significant Bits) binaryweighted sub-DAC. A switching scheme based on this dedicated architecture yields a high monotony and a fast settling time. The linearity errors caused by systematic influences and random variations are reduced by the 2-D double centroid symmetrical architecture. Experimental results show that the DNL is below ± 0.5 LSB and that the settling time after the output current mirror is below 12 ns. Although the proposed IDAC architecture was designed for a BMLD chip, the design concept is generic and can be applied for developing other monotonic high-speed current-mode DACs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::855cb80ef8e2c852f8fc0cae93ffdbf9 https://doi.org/10.1093/ietele/e90-c.4.877 Zobrazit plný text záznamu