User profiles for Rahul Sarpeshkar

Rahul Sarpeshkar

Thomas E. Kurtz Professor, Professor of Engg., Microbiol.& Immunol., Physics, Mol. and Syst …
Verified email at dartmouth.edu
Cited by 14213

Analog versus digital: extrapolating from electronics to neurobiology

R Sarpeshkar - Neural computation, 1998 - ieeexplore.ieee.org
We review the pros and cons of analog and digital computation. We propose that computation
that is most efficient in its use of resources is neither analog computation nor digital …

An ultra-low-power programmable analog bionic ear processor

R Sarpeshkar, C Salthouse, JJ Sit… - IEEE Transactions …, 2005 - ieeexplore.ieee.org
We report a programmable analog bionic ear (cochlear implant) processor in a 1.5-/spl mu/m
BiCMOS technology with a power consumption of 211 /spl mu/W and 77-dB dynamic range …

Synthetic analog computation in living cells

R Daniel, JR Rubens, R Sarpeshkar, TK Lu - Nature, 2013 - nature.com
A central goal of synthetic biology is to achieve multi-signal integration and processing in
living cells for diagnostic, therapeutic and biotechnology applications 1 . Digital logic has been …

A time-based energy-efficient analog-to-digital converter

HY Yang, R Sarpeshkar - IEEE Journal of Solid-State Circuits, 2005 - ieeexplore.ieee.org
Dual-slope converters use time to perform analog-to-digital conversion but require 2/sup N+1/
clock cycles to achieve N bits of precision. We describe a novel current-mode algorithm …

A bio-inspired ultra-energy-efficient analog-to-digital converter for biomedical applications

HY Yang, R Sarpeshkar - … on Circuits and Systems I: Regular …, 2006 - ieeexplore.ieee.org
There is an increasing trend in several biomedical applications such as pulse-oximetry, ECG,
PCG, EEG, neural recording, temperature sensing, and blood pressure for signals to be …

Digital selection and analogue amplification coexist in a cortex-inspired silicon circuit

RHR Hahnloser, R Sarpeshkar, MA Mahowald… - nature, 2000 - nature.com
Digital circuits such as the flip-flop use feedback to achieve multi-stability and nonlinearity to
restore signals to logical levels, for example 0 and 1. Analogue feedback circuits are …

An energy-efficient micropower neural recording amplifier

…, M Fee, R Sarpeshkar - IEEE Transactions on …, 2007 - ieeexplore.ieee.org
This paper describes an ultralow-power neural recording amplifier. The amplifier appears to
be the lowest power and most energy-efficient neural recording amplifier reported to date. …

Low-power CMOS rectifier design for RFID applications

S Mandal, R Sarpeshkar - … on Circuits and Systems I: Regular …, 2007 - ieeexplore.ieee.org
We investigate theoretical and practical aspects of the design of far-field RF power extraction
systems consisting of antennas, impedance matching networks and rectifiers. Fundamental …

Feedback analysis and design of RF power links for low-power bionic systems

MW Baker, R Sarpeshkar - IEEE transactions on biomedical …, 2007 - ieeexplore.ieee.org
This paper presents a feedback-loop technique for analyzing and designing RF power links
for transcutaneous bionic systems, ie, between an external RF coil and an internal RF coil …

Power-efficient impedance-modulation wireless data links for biomedical implants

S Mandal, R Sarpeshkar - IEEE Transactions on Biomedical …, 2008 - ieeexplore.ieee.org
We analyze the performance of wireless data telemetry links for implanted biomedical
systems. An experimental realization of a bidirectional half-duplex link that uses near-field …