Precision Amplifiers

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Precision Amplifiers

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  • Forum Post: Re: EEG system first stage after RC low pass filter below 20Khz I liked LT 1168 I could use some help getting a TI chip that is better

    josh wojnas
    The information I am looking for is for EMG Decomposition from surface electrodes with low amplification using a high bit adc. http://emglab.net/emglab/Figures/figures.html This source here states " In theory, a 10 kHz sampling rate captures all the information in the signal. Interpolation...
    on Feb 23, 2010

  • Forum Post: EMG/ECG measurement without DRL

    Gustav
    Normally, when you measure EMG or ECG you will have on electrode used as a Driven Right Leg. This DRL will make sure, that the electric potential of the person is correct, so that the input voltage level to the first instrumentation amplifier is within the CMR. Now that more and more EMG/ECG systems...
    on Jul 16, 2010

  • Forum Post: Re: INA326 EMG amplifier

    TC55946
    I have been following the discussion here since I also wish to design an EMG front end. I am hoping to use the INA126 chip and wondering if there would be any special differences to consider vs. the INA333, and also if there are any EMG front end reference circuits available from TI or one that you can...
    on Aug 31, 2010

  • Forum Post: Re: INA333 EMG Instrumentation Amplifier

    Bruce Trump
    Jacek, Low input bias current is desirable because it reacts with electrode contact resistance to create an input voltage that is not related to muscle activity. It is generally the variation in contact resistance with motion or movement that creates undesirable artifacts. The guideline you cite calling...
    on Dec 2, 2010

  • Forum Post: Re: INA326 EMG amplifier

    jainu jogani
    Hey, I was thinking of designing an EMG amplifier using INA101 . However, I want to limit my system to 5Vdc supply or up to 9V battery operated system. What kind of Instrumentation Amplifiers will work well for this purpose. I am thinking of trying INA333 . Please let me know if it will work. ...
    on Mar 4, 2011

  • Forum Post: EMG Design HELP!!!!!

    Pierre Chao
    Hey Our group is working on our final year engineering and have ran into a lot of issues one of which is overheating of our instrumentation amp. Our system is operating on a +/- 6 V source with reference mapped to ground. The design is comprised of two INA116, to amplify and remove crosstalk and...
    on Apr 7, 2011

  • Forum Post: Re: INA326 EMG amplifier

    jainu jogani
    Hello, I implemented EMG circuit using LM308 for instrumentation amplifier. This picture might give you a better idea of the same: Now, instead of using LM308, I am using INA 101 and also, instead of single channel, I am designing it to be multichannel. I had a few questions about INA 101...
    on Apr 12, 2011

  • Forum Post: EMG active amplifier using INA326

    Christopher Wiebe
    Hi, I am designing an EMG amplifier using the INA326 as the differential input component. I have referred to many of the forum posts involving the design of EMG/ECG amplifiers but still I am unsure about a couple parts of the design. 1) Design for Single Supply I intend to power the INA326 using...
    on May 12, 2011

  • Forum Post: Re: EMG active amplifier using INA326

    Neil Albaugh
    Pete; If we could find John Brown he would be a great resource for biomedical electronics answers; he wrote a texbook on biomedical instrumentation. Many of the INA circuits were developed by John.
    on May 18, 2011

  • Forum Post: INA128 EMG design question

    libuz
    I found a article on design of EMG http://advan.physiology.org/content/31/2/242.full.html They have a circuit using INA128 instrumentation amplifier with gain of 400. I couldn't understand how will it work though, considering the dc-offset. Can anyone explain me if this circuit is valid? Thank...
    on Jun 20, 2012

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