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Photodiode Amplifier
Related Posts

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

    Matt Hann
    Hi David, What is the application of this photodiode? Do you have a bandwidth requirement? What range of photocurrents do you expect to measure (i.e. 1n -1uA)? Are you trying to make your design run off of a single supply? Do you have an A/D picked out and are you going to be performing any signal processing...
    on May 29, 2009

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

    Haroldo
    Take a look at this presentation: (Please visit the site to view this file)
    on Apr 12, 2010

  • Forum Post: Photodiode Amplifier problem

    alley1122
    hello! I do not have a lot of basic electronics background but I need a simple photodiode amplifier circuit for my project. The optical beam received has intensity of a few microwatts and the photodiode amplifier circuit is needed to convert the optical signal into a voltage one. I am using a Hammamatsu...
    on Aug 12, 2010

  • Forum Post: Re: Photodiode Amplifier problem

    Vinay Shrivastava
    Hi , Like your case i am also poor in electronics background however having reasonable control in MCU . In my project i need to use photodiode as position sensor by detecting laser light falling on the photodiode . I plan to use ADCs of microcontroller and scan voltages across all photodiodes . One having...
    on Sep 8, 2010

  • 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: LOG114

    Teodor Neagoe
    I am looking for answers and suggestions on TI’s LOG114 (Log Amp). LOG114 provides best results when the input is current (for example: photodiode output). However, for my application, we have to use it with voltage source. We would like to monitor the photodiode’s output (pulse) in two ways...
    on May 17, 2011

  • Forum Post: Good OpAmp choice for TIA in UI panel?

    Tom Schroetter
    Hello TI community! I am looking for a good opamp (single supply) in a transimpedance amplifier application and was hoping to get some recommendations from the experienced engineers here. We are developing a user interface panel that uses lot's of photodiodes to detect infrared light (pulsed...
    on Jun 5, 2011

  • Forum Post: Precision Photodiode comparator

    Julien GUY
    Dear, I found a "Precision Photodiode Comparator" application in the LM111 datasheet. Have you got an update of this circuit with ROHS components? Have you got technical notes about this application? Thanks and best regards.
    on Jun 16, 2011

  • Forum Post: Re: photodiode transimpedance for quick pulse (20ns) with high DC background light

    Neil Albaugh
    Pierre-Yves; You have presented an interesting problem-- a very high bandwidth, high dynamic range requirement. It sounds as if you may be using a photomultiplier tube (PMT) or an avalanche photodiode (APD) to get such a high current output. It really does not matter what the source is, though, since...
    on Jun 20, 2011

  • Forum Post: IVC102 timing

    Maarten Wassenaar
    hi community, I'm considering using the IVC102 for measuring small currents from photodiodes (nA). what would be a good way to time the IVC 102? What is the easiest way to get a reliable low noise timing? And what would be a good way to sample the output? Maarten
    on Jul 19, 2011

  • Forum Post: Please recommend an amp for my application

    Inyong Kwon
    Hello. I am a graduate student in U of Michigan. Our research group has made photodetectors by ourselves. It has been very successful. Now, for the next step, we would like to see the current shape from our detector on a oscilloscope. So, we are looking for special amplifiers because the output current...
    on Sep 13, 2011

  • Forum Post: Re: Photodiode - op-amp questions

    Neil Albaugh
    Michael; Which Hamamatsu S1336 photodiode are you using? There are a number of different versions of the model photodiode, varying in active area from 1.2 sq mm to 33 sq mm. These are fairly large photodiodes, consequently they have from 20 to 380pF zero bias capacitance-- a critical limitation on...
    on Sep 23, 2011

  • Forum Post: Please help me with the amplifier ringing problem

    Peng Zhao
    I want to measure light intensity with a photodiode and use OPA37 to convert the photocurrent to output voltage. The parasitic capacitance of the photodiode is around 10-15 pF, so I chose a feedback resistor of 2K and feedback capacitor of 10pF. The output is generally OK but unexpected short ringing...
    on Nov 23, 2011

  • Forum Post: Re: Photodiode transimpedance amplifer

    Ali Teke91715
    Hi John, Here is the schematic This the waweform, it is about 20cm between IR emiter and photodiode Here is the problem, it is about 1cm between IR emiter and photodiode Thank you,
    on Dec 19, 2011

  • Forum Post: Re: TI equivalents to AD743 and LF357

    Winfield Hill
    Whoa! The fact that the question is about the AD743 and LF357 indicate the questioner knows a thing or two . These two parts are special to the designers of high-performance transimpedance amplifiers, or TIAs as we like to call them. First, the AD743 has a quiet 2.9 nV/rt-Hz of noise (at 10kHz). This...
    on Feb 20, 2012

  • Forum Post: Photodiode AC Amplifier

    Vianney P
    Hi, I want to build a photodiode amplifier to get an AC signal at a frequency of 1 Mhz. My photodiode has a parasitic capacitance of about 4pF. I want my system to work in a dark room or with sun light beams on the photodiode. => The photocurrent would vary from about 0.1µA to 70µA...
    on Apr 15, 2012

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