Precision Amplifiers

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Operational Amplifier
Related Posts

  • Forum Post: Amplifier (can be Op. Amplifier) for signal conditioning of an avalanche photodiode

    C���sar Alba
    I am currently developing an application with an avalanche photodiode. The output signal of this component is connected to an operational amplifier (example OP211). The thermal noise of the avalanche photodiode is influenced by the Famp( Noise figure of the amplifier). The thermal noise TN is given by...
    on Oct 8, 2010

  • Forum Post: TI LT1013 op amp does not follow the input

    Matt Hosler
    I'm using a TI LT1013 op-amp to process the current through a 50 mV shunt. I'm having some issues with the op-amp not performing well in certain conditions and I'm not sure why. It seems that the output of the opamp does not follow the input although the inputs are with Common mode range...
    on Mar 7, 2011

  • Forum Post: TLV237x input protection

    Zdenek Masek
    Hello, I have a qestion about operational amplifier TLV237x . Does it have input protection diodes (from inputs to Vcc and to GND) ? No info in datasheet..... There is a possibility in my application, that input voltage is present when OPAMP is off. OPAMP is connected as voltage follower, single...
    on Apr 12, 2011

  • Forum Post: Re: How can I design a Photodiode Amplifier Circuit optimized for 470nm wavelength?

    Neil Albaugh
    Grant; Your recommendations are all excellent but one-- that one is a trap that almost everyone falls into when first designing photodiode amplifiers. :...use as large a photodiode as you can but then be careful that the capacitance doesnt become too large to limit the frequency...." That...
    on Apr 25, 2011

  • Forum Post: Re: How can I design a Photodiode Amplifier Circuit optimized for 470nm wavelength?

    Neil Albaugh
    David; The best photodiode for your application depends on your signal level and bandwidth requirements as well as on the wavelength of your optical signal. High speed photodiodes are generally optimized for longer wavelengths while general purpose photodiodes peak at a shorter wavelength, even "blue...
    on Apr 25, 2011

  • Forum Post: Can the IVC102 current integrator also be utilized as a voltage integrator?

    S F Soares
    I am interested in using the IVC102 as a voltage integrator. It appears that there is access to Op-Amp terminals which allows one to do this. I'm just wondering if there are any limitations to running this chip as a voltage integrator? Also curious what the resistance of the two switches...
    on May 12, 2011

  • Forum Post: OPA2171 differential input range

    Martin Fuchs
    Hello! I can't find a "differential input range" in the OPA2171-Datasheet. So I suppose the differential input voltage is not limited as long as the input voltages do not exceed the common-mode input range? Regards, Martin Fuchs
    on Sep 5, 2011

  • Forum Post: adjustable sallen key filter design

    BRIAN PENG
    Dear sir: I got an application problem when designing my sallen key filter. I want to make filter bands adjustable through switching the capacitors as attached. I plan to switch S1, S3 together in lower band and switch S2, S4 together in higher band. Is there any concern of this design? Should...
    on Oct 12, 2011

  • Forum Post: PGA112 Gain Issue

    jun yang46050
    Hi, I tested an Gain-programmable circuit which uses IC - PGA112. The circuit is shown as below: The input signal is connected to C174 then into CH1. The amplified output can be measured at Min2 or RLine1. Its gain is controlled by SPI. PGA112 has binary gain (6db step). As a testing result...
    on Nov 30, 2011

  • Forum Post: Photodiode transimpedance amplifer

    Ali Teke91715
    Hello, I need to receive a raw infrared data streams by photodiode. The infrared emiter has different baudrates(300 to 115200 bps) and different light intensity . I used OPA314 op-amp as a transimpedance amplifer. In my tests, output signal looks good at low light intensities but the output signal...
    on Dec 19, 2011

  • Forum Post: I need to convert sound stethoscope audio signals to electric signal to be transmitted through some board (Like arduino) through pic.

    mudassar aslam
    I am thinking to take input from condenser (mic small) then amplify its output waveform and after that thinking to process it through arduino board to computer. i am using condensor mic to take data in. can you please help me out in any respect? http://uk.farnell.com/pro-signal/abm-715...
    on Feb 20, 2012

  • 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

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