Signal Processing blocks in Analog Circuits for deep submicron technologies

TEXAS A&M UNIVERSITY
Department of Electrical and Computer Engineering
Col l ege St at i on, Texa s 7 7843-3128
TEL (97 9) 845-9583 FA X (97 9) 845- 7161
el l a @ec e. ta m u. edu
ht tp :/ / am sc. ta mu. edu

SEMINAR
Room 223C ZEC
Thursday, March 5, 2009

3:55 - 5:10 P.M.

Signal Processing blocks in Analog Circuits for deep submicron technologies
by
Srinadh Madhavapeddi
Texas Instruments, Inc.
Dallas, Texas

Abstract: When we think of traditional circuits like data converter (DAC and ADC)
circuits, Phase locked loops or High Speed Serial Transceivers; we associate these to be in
the Analog circuit design domain. While this is true, what is also happening is that as
technologies shrink, the cost of integrating more digital gates has reduced even as the
variation of Analog components becomes a bigger concern. These two factors mean that
the use of digital gates as a means of correction/compensation up-front or post processing
is becoming more common place.
This seminar will focus on the “digital inside Analog”! It will discuss the motivation, the
trade-offs involved and the key concerns that apply to the use of digital techniques in
analog circuits. We will look at a few illustrative examples and also discuss the challenges
involved therein.
Srinadh Madhavapeddi is a Digital Design Lead in the Wireless Analog and RF Section

of Wireless Business Unit of Texas Instruments. He has been with TI for 9 years and has
most recently worked on Digital Signal Processing blocks like Decimation and
Interpolation Filters for Sigma Delta Data Converters as well as Frequency Synthesizer
loops. He also works on Mixed Signal Methodology in areas like modeling of Analog
circuits in HDL and Mixed Signal Design for Test (DFT. Previously he has worked on
System on Chip (SOC) designs in the Connectivity business including Ultra Wideband
Baseband, PCI-Express Switch and Bridge products as well as 1394 Link Layer devices.
Srinadh obtained an MSEE from the Johns Hopkins University in Baltimore, MD where he
was a student of Prof. Gert Cauwenberghs. He has filed three patents with the USPTO and
has published both conference and journal papers.