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Research and Design of High Speed DAC Based on ECL in InP-DHBT Technology

Author: FanXiaoJiao
Tutor: MaPeiJun
School: Xi'an University of Electronic Science and Technology
Course: Microelectronics and Solid State Electronics
Keywords: Indium phosphide Double heterostructure Current Steering Digital-to-Analog Converter Emitter coupled logic
CLC: TN792
Type: Master's thesis
Year: 2010
Downloads: 44
Quote: 0
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Abstract


The radar system and the rapid development of optical communication technology , more and more urgent demand for high-speed digital-to-analog converter (DAC) , ordinary silicon devices have been unable to meet the requirements , the gradually mature indium phosphide (InP) device to become the first choice for high-speed DAC . This article discusses the basic working principle of the DAC and InP-DHBT device parameters and model . On this basis , an InP-DHBT devices to achieve current rudder structure DAC . The DAC of the binary code - a thermometer code encoding circuit , using emitter coupled logic (ECL) . In order to optimize the power consumption and latency purpose of of ECL basic logical unit average propagation delay estimation , and based on the results of the estimation circuit structure optimization design . In this article, the basic logic unit , thermometer encoder and current switching circuit design and simulation , and, ultimately, the performance of the overall DAC simulation results show that : the DAC sampling frequency can reach 33GSPS integral nonlinearity error (INL) 0.0017LSB, and differential nonlinearity (DNL) 0.0087LSB, monotonicity meet the design requirements .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Basic electronic circuits > Digital circuits > Digital-analog , digital to analog conversion circuit
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