A 2-bit 20 Gsps InP HBT A/D converter for optical communications

Concepts

PhotonicsEngineeringOptical CommunicationsOptical Transmission SystemOptical PropertiesGsps Analog-to-digital ConverterData ConverterDigital EqualizationAnalog DesignPrototype 2-Bit 20Mixed-signal Integrated Circuit2-Bit 20Optical CommunicationOptical NetworkingOptoelectronicsOptical AmplifierAnalog-to-digital Converter

Abstract

A prototype 2-bit 20 Gsps analog-to-digital converter (ADC) fabricated in a 0.8/spl mu/m InP HBT technology is presented. With applicability to digital equalization in high rate optical communications receivers, this ADC achieves 1.8 effective number of bits (ENoB) Nyquist performance at a sample rate of 20 Gsps, while dissipating 1.6 watts.

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