m8ta
You are not authenticated, login.
text: sort by
tags: modified
type: chronology
{1041}
hide / / print
ref: Dorman-1985.12 tags: recording ASIC wireless date: 01-15-2012 05:35 gmt revision:2 [1] [0] [head]

IEEE-1052457 (pdf) A monolithic signal processor for a neurophysiological telemetry system

    • 8 channels.
    • 11 mW.
    • 12 cm^3 volume.
    • 900 pF or nitride-dielectric capacitance.
  • FM telemetry. consumes 75% of the system power in high bandwidth mode.
    • 8 cm^3 2.5 AH LiIon.
    • Some very clever stuffs with forward-biased diodes (picoamps, 10^10 ohms) to get the filtering...
    • Abstract: A micropower signal-processor IC is the key component of an implantable telemetry system for neurophysiology. The bipolar/JFET/I/SUP 2/L chip uses digital and low-noise analog circuitry to amplify, filter, and multiplex eight channels of neutral, electrogram, and temperature data from unanesthetized and freely moving animals. Fully integrated continuous-time bandpass amplifiers incorporate a frequency-sensitive feedback network to prevent the amplification of input offset voltage. The system can telemeter data for over 500 h, permitting long-term neurophysiological investigations.

____References____

Dorman, M.G. and Prisbe, M.A. and Meindl, J.D. A monolithic signal processor for a neurophysiological telemetry system Solid-State Circuits, IEEE Journal of 20 6 1185 - 1193 (1985)