Precision Amplifiers

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Precision Amplifiers

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Related Posts

  • Forum Post: Re: INA111AP - Instrument Op Amp

    Deke
    Revisting.... Matt, could I use a potentiometer for Rg? Thanks, Deke
    on May 30, 2009

  • Forum Post: OPA209 Gain Bandwidth ?

    SciMan
    OPA209 Gain band width per data sheet is 18 MHz. However, when I simulate it in a non-inverting amplifier for a gain of ~ 200, I get a 3 dB bandwidth of ~ 1 MHz. This doesn't make sense. (If the gain is 200, then the BW is approximately 18 MHz /200 ~ 90 kHz). Either (i) I am wrong or, (ii) the...
    on Mar 2, 2011

  • Forum Post: Problem with INA122P

    Rodrigo J���ger
    Hi guys, I've tried to test the circuit in the following picture, and even though it works flawlessly in the simulator, the amplification stage using a INA122P doesn't work as intended whilst mounted in a protoboard. The gain is not constant, it is falling as the input voltage increase, as you...
    on May 2, 2011

  • Forum Post: PGA280 Settling times

    David Musoke
    Hi: I have need for for 0.001% settling time for the PGA280. The datasheet lists between 30-40us typical, dependingon the gains. 1. What is the maximum input voltage i'd need to guarantee my 15us time? 2. What is the maximum gain switching time from G=1/8 to G=128? Regards, David
    on Oct 13, 2011

  • Forum Post: PGA116 Gain settings not working

    1365631
    I have a design where I have used a PGA116 for it's multiplexing/calibration capabilities and have had this working happily for a while. Now I need to use the gain block and so I have modified the firmware on the processor which controls it (over SPI) to send the new gain setting with the channel...
    on Oct 14, 2011

  • Forum Post: Problem with OPA2320

    Yogesh Palkar
    I have configured the OPA2320 to work as a buffer. I have used no capcitors in the feedback circuit. The output of the OPA2320 is amplified for higher frequencies while is perfectly acting as a buffer for the lower frequencies. What might be the problem?
    on Mar 20, 2012

  • Forum Post: Re: Problem with OPA2320

    Yogesh Palkar
    Hello Sir, No I dont have a Gain/Phase analyzer. The schematic is very simple. OPA2320 is fed with an input to the positive pin from a signal generator. The negative pin and the output are shorted. The output is given to a DSO. The positive 2.5V and the negative 2.5V supplies are bypassed using...
    on Mar 20, 2012

  • Forum Post: DC Offset with opa2350

    David Armstrong
    Howdy, I'm using the opa2350 op amp to amplify a <1mV signal by 2000. The problem is I want to have a greater gain (either second stage or larger feedback resistor) however the DC level is reaching too high so that it reaches over 2 V, and I need it under 2 V in order for a digital read into an...
    on Mar 28, 2012

  • Forum Post: lmp8640 problem

    Tan Chin Yew
    halo all, i am using the lmp8640, and Vcc=5, Vout to adc is 1.5V, sense resistor =3mili ohm; the problem with this high voltage current sense amplifier is too small, and only written AF6A, so i didnt which side is the 1st pin ? and the value of filter resistor and capacitor is...
    on Apr 2, 2012

  • Forum Post: OPT101 photodiode responsisivity at 470nm ???

    albert torres
    I have a medical application where i need to measure the irradiance of a source light with a wave length of 470nm,and I have some ambient noise (sun and fluorescent lights) I have already filter the ambient noise and I have a good reading of the irradiance all I need to know is the responsivity at 470nm...
    on Apr 15, 2012

  • Forum Post: INA333 Gain Calculation

    David Escandon
    TI Team, The gain calculation shown on page 14 of the datasheet--an application circuit--shows that the INA333 has a gain of 10. I'm assuming that this value is derived from the RLD drive circuit, in series with the RG resistors 2.8K. The combined resistance is 11.4K, which results in a gain close...
    on May 9, 2012

  • Forum Post: INA2321 OP AMP Formula

    Jeff Hawkins
    This datasheet for this part can also be found using INA321. My problem is the following: The formula for the datasheet basically says that the Op-Amp is NOT V(ref) dependent. However, my results say otherwise. We are using this op-amp to amplify the signal of a dual-bridge rotary sensor. The bridges...
    on Jun 13, 2012

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