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  • OPA838: LTSpice model for OPA838

    Part Number: OPA838 Other Parts Discussed in Thread: TINA-TI I'm looking for the LTSpice model for the OPA838. I used one from another forum but it did not work.

  • OPA858-Q1: OPA838: OPA838: Frequency response in multi-stage TIA configuration

    TI Thinks Resolved
    Part Number: OPA858-Q1 Other Parts Discussed in Thread: OPA838 , OPA837 Hi, My previous thread was locked without receiving a response, so I'm reposting my question. I am experiencing an unexpected frequency response issue in TinaTI simulations when…

  • OPA838: OPA838: Frequency response in multi-stage TIA configuration

    Part Number: OPA838 Other Parts Discussed in Thread: OPA837 Hi, I am experiencing an unexpected frequency response issue in TinaTI simulations when cascading the OPA838 ufter the OPA837 as a TIA. Each individual stage simulates is fine on its own…
    • Answered

  • OPA838: 91MHz oscillation using OPA838

    Resolved
    Part Number: OPA838 Other Parts Discussed in Thread: TINA-TI , OPA836 Tool/software: Hi, my 2-stage non-inverting amplifier with BW 4MHz has some oscillation of 91MHz. 1st & 2nd stages are set to x10LIN gain. Single supply with 1.85V operating bias voltage…
    • Resolved
    • Answered

  • OPA838: OPA838 Power-Down feature

    Resolved
    Part Number: OPA838 Tool/software: Hi, Could you please confirm the OPA838 power-down operation? The question is whether this is simply a reduction of supply current or an actual disable with output disconnect. Is the output still driving while…
    • Resolved

  • OPA838: Design a 50Mhz PWM ADC

    Part Number: OPA838 Other Parts Discussed in Thread: LMG1210 Hi, I am looking a 50Mhz PWM ADC which it does not exist anywhere. I have been thinking to use two high speed opamp to create a triangle wave and feed it to a comparator. I wonder is that…
    • Answered

  • OPA838: OPA838IDBV

    Resolved
    Part Number: OPA838 Other Parts Discussed in Thread: TINA-TI , , OPA836 Tool/software: OPA838IDBV used with a 5V single supply. 5V confirmed at pin5 & 6. Vref is disconnected from any other circuitry. A simple circuit here, but it doesn't work. 2…
    • Resolved
    • Answered

  • OPA838: PCB layout for OPA838

    Resolved
    Part Number: OPA838 Dear all, In the datasheet of the OPA838 there are the following recommendations for PCB layout: 1.Signal routing must be direct and as short as possible into and out of the op amp. 2. The feedback path must be short and…
    • Resolved

  • OPA838: Choosing isolation resistor for OPA838 output

    Part Number: OPA838 Dear all, I want to choose an accurate vale for an isolation resistor for my OP-AMP (OPA838), based on the datasheet OPA838 is very sensitive to capacitive loads and for make the system robust to instability we need to add an isolation…

  • OPA838: Connecting the output of the OPA838 to a second stage amplifier

    TI Thinks Resolved
    Part Number: OPA838 Dear All, I have designed a transimpedance amplifier as follows: I leaned that loading effect can be detrimental to OPA circuit and is very important to be considered. I want to consider and design the output circuit in my…

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