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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/17508

Title: An 8-bit, 12.5GS/s Folding-interpolating Analog-to-digital Converter
Authors: Ghetmiri, Shohreh
Advisor: Salama, C. A. T.
Department: Electrical and Computer Engineering
Keywords: An 8-bit, 12.5GS/s Folding-Interpolating Analog-to-Digital Converter
high speed ADC
shoreh ghetmiri
Shohreh Ghetmiri
C.A.T Salama
Folding interpolating ADC
8 bit SiGe ADC
IHP ADC
Issue Date: 10-Aug-2009
Abstract: The motivation behind this work is to target the demand for high-speed medium-resolution ADCs for satellite communication systems. An 8-bit, 12.5GS/s folding-interpolating ADC was designed in 0.25µm, 190GHz SiGe BiCMOS technology from IHP. The ADC consists of a THA, a reference resistor ladder, folding amplifiers, an interpolating resistor string, a comparator array, a digital encoder, a coarse quantizer and a bit synchronizer. Post-layout simulation results of the ADC verify that its performance meets all the required specifications. By comparison to other high-speed ADCs, implemented in SiGe technologies, the present design features the highest sampling rate for 8-bit resolution ADCs to date with a good FOM (12.9pJ/conversion). The THA and the comparator were implemented experimentally and characterized to verify their performance and to ascertain the possibility of implementing the complete ADC. The experimental results meet the expected specifications and indicate that both circuits are suitable for the implementation of the ADC.
URI: http://hdl.handle.net/1807/17508
Appears in Collections:Master
The Edward S. Rogers Sr. Department of Electrical & Computer Engineering - Master theses

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