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    Answered

  • OPA3S2859-EP: Output of the amplifier problem. The voltage is between 100 mV and 600mV max.

    Resolved
    Part Number: OPA3S2859-EP Hi, I have a problem with the OPA3S2859-EP (Programmable Gain Transimpedance Amplifier) device. The configuration used is the one shown in the figure where: Vin=+5V -Vbias=-5V Supply voltage (VS+ - VS-)= 5V - 0V Output at 50 ohms…
    • Resolved
    • Answered

  • OPA3S2859-EP: OPA3S2859-EP

    Resolved
    Part Number: OPA3S2859-EP Other Parts Discussed in Thread: TINA-TI Hi I checked three boards and all behave the same wave: SEL0 SEL1 0 0 high gain Rfb 100k 0 1 lower gain Rfb 10k 1 0 oscillation Rfb 1k This is the picture of the output…
    • Resolved
    • Answered

  • OPA3S2859-EP: OPA3S2859-EP

    Resolved
    Part Number: OPA3S2859-EP Hi, I just got a new board with OPA3S2859-EP. I do not see output on VOUT_A p19 when I put 20mV from 50 Ohm signal generator at 500 kHz I use single pole power supply of 5V. INA+ and INB+ connected to 2.5V with bypass cap. There…
    • Resolved

  • OPA3S2859-EP: TIA: Gain switching Saturation Issue

    TI Thinks Resolved
    Part Number: OPA3S2859-EP Hi, We are using the OPA3S2859-EP for our application. Earlier I had created a thread to discuss about the switching options and simulation results. We mad our own board now and whenever we a provide a pulse, Output will initia…
    • Answered

  • OPA3S2859-EP: One channel not used how to connect unused pins

    Resolved
    Part Number: OPA3S2859-EP Other Parts Discussed in Thread: OPA3S2859 , LMH32401 Hi everybody, OPA3S2859-EP seems to a very nice part for application. So we are going to do some tests with that part. Unluckily we only need one channel. Is there any recommendataion…
    • Resolved

  • [FAQ] [H] Frequently Asked Questions - High Speed Amplifiers Selection Guide - Transimpedance Amplifiers

    Frequently Asked Questions: Amplifiers >> High Speed Amplifiers >> HSA Selection Guide >> Transimpedance Amplifier Selection Guide JFET Input Bipolar Input CMOS Input FDAS Power Amps VGAs TIAs Introduction: The…

  • TRF37D73: Input impedance

    Part Number: TRF37D73 Other Parts Discussed in Thread: OPA3S2859 , OPA855 , OPA858 Hello, I am looking to use this RF gain block as the first stage in a photodetector application. I was wondering if there is a real resistor to ground from the RF input?…
    • Answered

  • OPA3S328: Difference between INx- and COMPx inputs

    Resolved
    Part Number: OPA3S328 Other Parts Discussed in Thread: OPA3S2859 The 2 OPA have an INx- inpout and a COMPx input. they appear internally connected, so why have 2 separate inputs?
    • Resolved
    • Answered

  • OPA859: TIA with Gain switching

    Resolved
    Part Number: OPA859 Other Parts Discussed in Thread: TMUX136 , OPA3S328 , OPA3S2859-EP , LMH32401 , OPA3S2859 Hi, This is very similar to the question posted in the forum https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/754286/opa657…
    • Resolved
    • Answered

  • RE: LMH32401: LMH32401

    Resolved
    Hi Sima, Thanks a lot for your reply and suggestion. Just like the LMH32401 and OPA3S2859-EP, it controls the signal path by analog switch. If I use the analog switch and configure it outside of the OPA, do you have a recommended product of the analog…

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