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Showing 170 results View by: Thread Post Sort by
  • Danilo Austria
    Danilo Austria
    • 1 month ago
    • Amplifiers
    • Amplifiers forum

    OPA211: Worst case quiescent current

    TI Thinks Resolved
    Part Number: OPA211 Hi Team, The datasheet provides information on the maximum quiescent current over the whole supply range pf OPA211. A customer would like to know if the device is powered from ±2.3V, what is the worst case it could draw current...
  • Raymond Zhang1
    Raymond Zhang1
    • 27 days ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA211: Inverting application of OPA211 failure

    Hi Eric, 1, My circuit is used in current measure of the inverter's low-side phase leg. The accuracy of current sampling is very high (0.1% or higher). What is the best topology? Please take a look at the following threads. https://e2e.ti.com...
  • user4674678
    user4674678
    • 4 months ago
    • Amplifiers
    • Amplifiers forum

    OPA211: The bias current questions

    TI Thinks Resolved
    Part Number: OPA211 Hi, I am a hardware engineer. I have some questions about the op amp bias current. Q1: The bias current is supplied by the external circuit or the internal circuit? Q2: If the bias current is supplied by the external circuit...
  • Bin Zeng
    Bin Zeng
    • 3 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA211: Not working. Leaking current from input to ground

    Hi Kai, Thank you for your reply. It solved my problem. I changed the voltage supply from 0~9V to -3V~+3V, the op amp was working just fine. Regards, Bin
  • manoj r
    manoj r
    • 9 months ago
    • Amplifiers
    • Amplifiers forum

    OPA211: TINA Simulation Tool

    • Resolved
    Part Number: OPA211 Hi, I have downloaded OPA211 TINA model. However this model is not working
  • Raymond Zhang1
    Raymond Zhang1
    • 4 days ago
    • Power management
    • Power management forum

    RE: REF3425: output capacitor value

    Hi Marcoo, With 100uF capacitive load, the OPA211's compensation may look like this. I put together a quick one, but it is stable. It does not have much BW. Below is the square wave that is simulated at 25Hz. /cfs-file/__key/communityserver...
  • Mochi
    Mochi
    • 1 month ago
    • Amplifiers
    • Amplifiers forum

    RE: THS4551: Flicker noise

    Hi Michael, Our customer is not comfortable to disclose their circuit to public forum space. Instead of that they want to find Flicker noise level specified amplifier, like OPA211 datasheet there is Voltage noise specification at f=0.1-10Hz, 80nVpp...
  • Raymond Zhang1
    Raymond Zhang1
    • 10 months ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA211: OPA211 powered single-supply 3.3V?

    Hi Andreas, The datasheet recommended to have minimum voltage of 4.5V as operating conditions in a single voltage supply. Even if the part works at 3.3V, it may not get the linear responses the op amp output. Using 4.5V as the single rail power supply...
  • Philipp Putzer1
    Philipp Putzer1
    • 8 days ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum

    PSPICE for TI, external models, noise Analysis for OPA2830 and OPA2822

    Hi, I'm using the PSPICE for TI to simulate an analog circuit for noise comparison. 1.) I want to test the TI models OPA2822 and the OPA2830. For the OPA2822 there is no model available in the installation, so I downloaded it and imported it into...
  • Michael Steffes
    Michael Steffes
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum

    RE: OPA211: Improving SNR in IF circuit - low noise amplifiers

    this is one of my areas if you want to send details to msteffes1@comcast.net will need, 1. input match?(impedance) 2. gain 3. single or diff. out? 4. ADC input requirements? (vcm, Vpp) 5. Any HD concerns? Straight 50ohm terminated op amps...
>

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