R. Sarpeshkar

Publications123
h-index41
Citations7,699
Highly Influential Citations392
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An Energy-Efficient Micropower Neural Recording Amplifier
TLDR
We present an ultralow-power neural recording amplifier that achieves input-referred noise near the theoretical limit of any amplifier using a differential pair as an input stage. Expand
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Digital selection and analogue amplification coexist in a cortex-inspired silicon circuit
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 generally… Expand
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Analog Versus Digital: Extrapolating from Electronics to Neurobiology
  • R. Sarpeshkar
  • Computer Science, Medicine
  • Neural Computation
  • 1 October 1998
TLDR
We propose that the brain computes in a hybrid fashion and that an underappreciated and important reason for the efficiency of the human brain is the hybrid and distributed nature of its architecture. Expand
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Feedback Analysis and Design of RF Power Links for Low-Power Bionic Systems
TLDR
We present an example of a bionic implant system designed for load power consumptions in the 1-10-mW range, a low-power regime not significantly explored in prior designs. Expand
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Low-Power CMOS Rectifier Design for RFID Applications
  • S. Mandal, R. Sarpeshkar
  • Engineering, Computer Science
  • IEEE Transactions on Circuits and Systems I…
  • 11 June 2007
TLDR
We investigate theoretical and practical aspects of the design of far-field RF power extraction systems consisting of antennas, impedance matching networks and rectifiers. Expand
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Ultra Low Power Bioelectronics: Fundamentals, Biomedical Applications, and Bio-Inspired Systems
Part I. Foundations: Ten chapters lay a foundation in device physics, noise, and feedback systems including nano scales in a highly original fashion, emphasizing intuitive thinking. This foundation… Expand
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A Low-Power Wide-Dynamic-Range Analog VLSI Cochlea
TLDR
We describe an analog electronic cochlea that processes sounds over 6 orders of magnitude in intensity, with an estimated power dissipation of only a few tens of microwatts. Expand
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Synthetic analog computation in living cells
TLDR
We demonstrate that synthetic analog gene circuits can be engineered to execute sophisticated computational functions in living cells using just three transcription factors. Expand
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A Low-Power Wide-Linear-Range Transconductance Amplifier
TLDR
We describe a transconductance amplifier designed for low-power(< 1 µW) subthreshold operation with a wideinput linear range. Expand
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An Energy-Efficient, Adiabatic Electrode Stimulator With Inductive Energy Recycling and Feedback Current Regulation
TLDR
We present a novel energy-efficient electrode stimulator which uses a dynamic power supply as a variable voltage source to efficiently drive an electrode with positive or negative current. Expand
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