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  • OPA349: A time delay circuit ,what's the difference bettwen RC and operational amplifier design

    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

  • OPA349* NANO POWER AMP.

    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…
    • Answered

  • High gain ac simulation OPA349

    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

  • RE: LPV811: Higher bandwith part similar to LPV811

    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).

  • RE: LM358: A intergrator of LM358

    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

  • RE: sn105125: What is the total unloaded power consumption?

    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…
    • Answered

  • RE: SR # 1-819181324 Regarding INA333

    Resolved
    Can I use the OPA349 to deliver 5mVpp into 680 Ohm load under these conditions?

  • RE: INA333 Gain Calculation

    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…

  • Re: TPS61200 Solar LiPo charger questions

    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…

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