Design Techniques for Low Noise and High Speed AD Converters

TEXAS A&M UNIVERSITY Department of Electrical and Computer Engineering Col l ege St at i on, Texa s 7843-3128 TEL (409) 845-7 498 FA X (409) 845- 161 sanc hez @ec e ta m u edu ht :/ / am esp 02 ta m u edu SEMINAR Room 227A ZEC Wednesday, September 27, 2006 3:00 p.m - 3:50 p.m Design Techniques for Low Noise and High Speed A/D Converters by Amit Kumar Gupta Dept of Electrical and Computer Engineering College Station, TX 77843-3128 Abstract: Analog-to-digital (A/D) conversion is a process that bridges the real analog world to digital signal processing The resolution and sampling rate of an A/D converter vary depending on the application Recently, there has been a growing demand for broadband (>1 MHz), high-resolution (>14bits) A/D converters Applications that demand such converters include asymmetric digital subscriber line (ADSL) modems, cellular systems, high accuracy instrumentation, and military SONAR There is also an increasing trend to integrate the input driver for such A/D converters on the same chip as ADC In this presentation we look at some design techniques for such high resolution and high sampling rate A/D converters and also for drivers for these ADC’s Amit Kumar Gupta received his B.E (Hons.) Electrical and Electronics degree from Birla Institute of Technology and Science, Pilani, India He is currently working towards M.S degree in Analog & Mixed-signal Center, Texas A&M University He worked at Texas Instruments, India as a design engineer from 2002-2004, where he was involved in the design of pipelined A/D converters He worked as a Co-op designer with Texas Instruments, Dallas from June to Dec, 2005 on design of broadband sigma delta ADC’s His main research interests include design of continuous time delta sigma A/D converters