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  • Re: How to use the Pspice simulation models downloaded from this website?

    Resolved
    Pspice model unencrypted **** 07/30/10 12:01:16 ******* PSpice 16.3.0 (June 2009) ****** ID# 0 ******** ** Profile: "SCHEMATIC1-ina331" [ F:\ina331\ina331-pspicefiles\schematic1\ina331.sim ] **** CIRCUIT DESCRIPTION *************************…

  • Re: INA331IDGKT model file is not working

    Hello Abhratanu, The issue with your INA331 simulation circuit is not related to the simulator or model, but the way the INA331 has been set up in the circuit. By allowing the REF pin to float the inverting input of INA331 A1 takes on the same common…
    • Answered

  • Capacitive Wheatstone Bridge

    Resolved
    Other Parts Discussed in Thread: INA331 , TEST2 Hello, I am experimenting with an RC Wheatstone Bridge with the intention of measuring the change in capacitance in a sensor. The bridge is excited using a sine wave with a dc offset of 2.5v. Attached…
    • Resolved

  • Input Bias Current Return Path for INA

    Other Parts Discussed in Thread: INA331 Hello, I am using a bridge variation shown below. I would like to use an instrumentation amplifier (I am currently experimenting with the INA331) to read the differential voltage between points A and B. My problem…
    • Answered

  • Offset Voltage err. Calc. for INA129&OPA277

    Resolved
    Other Parts Discussed in Thread: INA331 , OPA277 Dear Sirs, Kindly asking about the offset voltage error calculations for INA129E and OPA277. I noticed that the INA331 has the following formula for the voltage offset calculation: Adjusted VOS…
    • Resolved
    • Answered

  • High Gain Amplifier Design

    Resolved
    Other Parts Discussed in Thread: INA163 , INA331 , INA2331 Hello, It is intended to design an array of amplifiers with a gain of 1200 on each channel. Input signals are between 1uV to 3uV with a BW of 100Hz to 100kHz. I intend to use TI op-amps. I have…
    • Resolved

  • RE: OPA189: OPAMP choice for ADC

    Hello Niclas, That is certainly a lot of information to consider. You are working from a proven design so that provides you with a basis to work and improve upon. Since Raymond and I are not an expert on your system design, it is a bit difficult for…
    • Answered

  • Using ADS1298ECGFE-PDK for EEG measuring

    Resolved
    Other Parts Discussed in Thread: ADS1298ECGFE-PDK , ADS1298 , INA331 Dear All, Kindly, asking about using the demo kit ADS1298ECGFE-PDK to digitize and interface 6 sensor signals and analyze them with the software ADS1298ECG-FE?? The signals are…
    • Resolved
    • Answered

  • 2 stage amp., Irregular circuit

    Resolved
    Other Parts Discussed in Thread: INA332 , INA129 , TINA-TI , INA331 Dear All, hoping you have a good day.. Kindly asking about the "Irregular Circuit" for the attached TINA-TI, we are about to amplify two signals of 50uV and 5Hz. via first stage…
    • Resolved
    • Answered

  • Re: Stuck with T&M in TINA-TI

    Resolved
    Dear Mr. Rick, Thank you very much for your health, The circuit really works!!!! About the Offset, I checked the datasheet of the In-Amp INA331 and it was 250uV, i am not sure if i can apply this very small voltage practically? Also, can we consider…

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