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Showing 9 results View by: Thread Post Sort by
    Answered
  • OPA349: A time delay circuit ,what's the difference bettwen RC and operational amplifier design

    user5264061
    user5264061
    Resolved
    Part Number: OPA349 I want to design a time delay circuit, as the below design,what's the difference bettwen A and B scheme ?
    • Resolved
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum
  • OPA349* NANO POWER AMP.

    eli
    eli
    Other Parts Discussed in Thread: TLV3691 , TLV3491 , OPA349 I need to know how the following devices OPA349 (nanowatt opamp), TLV3491/TLV3691(nanowatt comparators) behave when their DC power raises very slowly, 45 seconds or more from 0 to 3V... I intend…
    • over 6 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • High gain ac simulation OPA349

    Perry Robertson
    Perry Robertson
    Resolved
    Other Parts Discussed in Thread: OPA349 I have ac simulation of OPA349 in inverting configuration that has large feedback resistor (<10K). With very large gains, the simulation shows a drastic drop in low freq gain (> 1M no gain at all). Does anyone…
    • Resolved
    • over 7 years ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • RE: LPV811: Higher bandwith part similar to LPV811

    Marek Lis
    Marek Lis
    Carlos, You do not specify what other parameters besides IQ and bandwidth are critical in your customer's application but here are some other options: OPA369 (800nA, 12kHz) , OPA349 (1uA, 70kHz) and OPA379 (2.9uA, 90kHz).
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: LM358: A intergrator of LM358

    user5264061
    user5264061
    Thank for your repply. Today I used OPA349 instead. And the wave shape in scope like this: channel 1 : power supply which is 6V DC channel2 : output voltage which have been intergrated
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: sn105125: What is the total unloaded power consumption?

    Mitch Hanks
    Mitch Hanks
    Hi Eric, Thanks for the information. I would like a voltage reference that consumes a few uA. I could go with an op amp such as the OPA349 in unity gain with a resistor divider on the input but for the divider to consume minimal current the resistors…
    • over 3 years ago
    • Power management
    • Power management forum
  • Answered
  • RE: SR # 1-819181324 Regarding INA333

    Dean Micheli1
    Dean Micheli1
    Resolved
    Can I use the OPA349 to deliver 5mVpp into 680 Ohm load under these conditions?
    • over 8 years ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • RE: INA333 Gain Calculation

    Bruce Trump
    Bruce Trump
    David, I did a quick simulation and found that the output impedance of the OPA349 is approximately 100 ohms at 150 Hz and rises linearly with frequency. This is not quite as high as I thought and may not be an issue. You are correct that open loop gain…
    • over 8 years ago
    • Amplifiers
    • Amplifiers forum
  • Re: TPS61200 Solar LiPo charger questions

    MCV
    MCV
    nanobot9000: Mike said: I understand the need to monitor the input current levels but what I cannot seem to find is the minimum current required to start-up and then maintain operation. Below is an example how to ensure that the input current does not…
    • over 11 years ago
    • Power management
    • Power management forum

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