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  • OPA615: Figure 48 in datasheet, results not as expected

    Part Number: OPA615 Other Parts Discussed in Thread: BUF602 , , TINA-TI , OPA860 Following the datasheet figure 48 bipolar peak detector circuit using the OPA615 in TINA the negative Vout- doesn't work as expected. The positive Vout+ will track the Vpositive…

  • OPA615: Measuring peak value of fast optical pulse

    TI Thinks Resolved
    Part Number: OPA615 Other Parts Discussed in Thread: OPA860 Hello Guys, Our customer is looking to to measure the peak value of an optical-pulse signal (converted to an electrical signal via the DET10A2 photodiode, ThorLabs). The pulse has a rise time…

  • OPA615: Fast Bipolar Peak Detector

    Part Number: OPA615 Hi team, My customer found a problem using OPA615IDR. The schematic diagram of OPA615IDR is as follows: When OPA615_IN network is suspended, after ± 5V voltage is applied, some OPA615 chips can measure about 45mv DC level on …
    • Answered

  • OPA615: Peripheral circuits for the OTA used as VCCS

    Resolved
    Part Number: OPA615 Other Parts Discussed in Thread: OPA189 Hi all, Recently, I need a VCCS circuit to charge a capacitor as a time counter. The detailed circuit is shown below. The VCCS will charge the capacitor and reset when the voltage across the…
    • Resolved

  • ADC081S021: ADC081 and OPA615

    Part Number: ADC081S021 Other Parts Discussed in Thread: OPA615 Hi, I want to build a circuit like the one below. There is an analog output of transimpedance amplifier. The amplitude of signal is between 0-3.3V, and the pulse width 10 ns. I want to…
    • Answered

  • OPA615: OPA615EVM Layout concerns

    Resolved
    Part Number: OPA615 Dear colleague, Our customer is using OPA615, they find in our OPA615EVM, it is not copper on the OPA615 back, as below. I check the datasheet, I want to confirm whether to minimize parasitic capacitance to any AC ground for all of…
    • Resolved

  • RE: OPA615: Fast Pulse positive detector using OPA615

    Hi Orwell, the OPA615 is a very fast chip and you need to use HF techniques to make it work properly. Breadboarding will not give good results. Another issue is the cabling. For the input signal you should use a 50R driver, a 50R cable and a 50R termination…

  • OPA615: OPA615 FAST PEAK DETECTOR PROBLEM

    TI Thinks Resolved
    Part Number: OPA615 Other Parts Discussed in Thread: BUF602 , , TINA-TI Hi, I would like to build fast peak detector. It should be analog circiut. I decided to try with OPA615 and BUF602 IC. The signal to measure: PPM, 4MHz, 10ns pulse amplitude from 10…
    • Answered

  • WEBENCH® Tools/OPA615: Sample-hold circuit

    Resolved
    Part Number: OPA615 Tool/software: WEBENCH® Design Tools Hi - I am trying to implement a sample-hold circuit with OPA615. I am trying to replicate Page#12 of http://www.ti.com/lit/ug/tidu155a/tidu155a.pdf My output voltage doesn't change as shown in the…
    • Resolved

  • WEBENCH® Tools/OPA615: Simulation, hardware & system design tools forum

    TI Thinks Resolved
    Other Parts Discussed in Thread: THS3491 , OPA615 .

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