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High CMRR Instrumentation Amplifier (Schematic and Layout) design for biomedical applications

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Instrumentation amplifiers are intended to be used whenever acquisition of a useful signal is difficult. IA’s must have extremely high input impedances because source impedances may be high and/or unbalanced. bias and offset currents are low and relatively stable so that the source impedance need not be constant. Balanced differential inputs are provided so that the signal source may be referenced to any reasonable level independent of the IA output load reference. Common mode rejection, a measure of input balance, is very high so that noise pickup and ground drops, characteristic of remote sensor applications, are minimized.Care is taken to provide high, well characterized stability of critical parameters under varying conditions, such as changing temperatures and supply voltages. Finally, all components that are critical to the performance of the IA are internal to the device. The precision of an IA is provided at the expense of flexibility. By committing to the one specific task of
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Final year Project Ideas

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  Bio-instrumentation Final year Project Ideas
  • Blood pressure
    • Arm pulse/ox and ECG to get vital signs (including blood pressure by P-wave velocity)
    • Doppler blood flow meter
    • Blood pressure cuff.
  • ECG/heart
    • ECG using capacitative electrodes on arm or fingers.
    • ECG using RF coupled passive sensors.
    • ECG with advanced QRS detection.
    • ECG with improved noise removal 
    • Electronic stethoscope and heart sound analysis.
    • Transistor hardware model of the heart with model pacemaker and defibrillator.
  • Impedance
    • GSR and skin impedance measurement.
    • Impedance tomography.
  • Eye
    • Eye-motion measurement by IR or camera or electro-ocular methods.
    • Pupil servo cnaracterization 
  • Functional imaging
    • IR tomography -- Functional Near-Infrared brain imaging.
  • EMG
    • Correlate and model IR reflectance with EMG.
  • Oscillators
    • Hardware model of gene oscillator
    • Nonlinear oscillator synchronization
  • Infrastructure/instrumentation
    • Analog adaptive 60 Hz filter. (LMS or other algorithms)
    • Adaptive filters for ECG/EMG 
    • Eliminate the DAQ6008 interface and use audio input to the computer.
  • Joint/sports
    • Wireless knee angle sensor.
  • Acoustic
    • Measure head-related transfer function and synthsize sound using it.
    • Oto-acoustic response