Abstract

OF THE DISSERTATION An 8-Bit 150-MHz CMOS A/D Converter by Yun-Ti Wang Doctor of Philosophy in Electrical Engineering University of California, Los Angeles, 1999 Professor Behzad Razavi, Chair High-speed analog-to-digital converters (ADCs) with resolutions of 8 bits find wide application in instrumentation and communication systems. For example, portable digital oscilloscopes use 8-bit ADCs with sampling rates above one hundred megahertz. Also, the Gigabit Ethernet standard with CAT-5 copper cable requires four 125-MHz ADCs having a resolution of 7 to 8 bits to perform the frontend analog-to-digital data conversion. This dissertation presents an 8-bit, 5-stage interleaved and pipelined ADC that performs analog processing only by means of open-loop circuits such as differential pairs and source followers, thereby achieving a high conversion rate. The concept of "sliding interpolation" is proposed to obviate the need for a large number of comparators or interstage digital-to-analog conve...

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