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  • THS4021: Want to know how to estimate the trim pin compensation

    TI Thinks Resolved
    Part Number: THS4021 Hello，this is my question: I want to select THs4021 ,use to the pre-Amp. This IC has two trim pin.I want to know the compensation,which pin is positive feedback? Is the datasheet has the characteristic to judge this ? Thankyou!

  • THS4021 noise

    Other Parts Discussed in Thread: THS4021 , OPA657 , THS4631 , OPA656 Hi, Above is the circuit I simulated. I used the THS4021 as an op-amp in a transipedance amplifier (TIA) circuit. The noise from 0.1 Hz to 10 Hz is higher than I want. The noise at 10 Hz…

  • LMH6554: Regarding the review of ADC & DAC (DAC5652A) design

    Part Number: LMH6554 Other Parts Discussed in Thread: THS4021 , LMH6321 , OPA695 , I am attaching the adc-dac schematic. Please review and let me know if any changes are required in amplifier section. adc_dac.pdf

  • RE: OPA847: alternate part with Higher voltage range

    So the OPA847 is a lower input noise decompensated VFA, in the 30V supply range, the similar part would be the THS4021
    • Answered

  • OPamp recommendation

    Resolved
    Other Parts Discussed in Thread: THS4021 , THS3120 , THS3091 Dear amplifier experts, I am looking for an OP: - high input impedance (>1MOhm) - low input capacitance (<1pF) - GBW > 10MHz - Noise < 5nV/sqrt(Hz) - Input voltage +/- 10V THS4021…
    • Resolved
    • Answered

  • RE: LM318: Bal, Comp and Bal&Comp connections to use LM318 as fast switching buffer

    Resolved
    Hello Chukka, For second stage at 20V/V and analyzing signal at 20MHz, I would suggest switching out the OPA810 with a higher GBW part such as THS4021, THS3001, or THS3491. Here is a link to compare devices. Thank you, Sima
    • Answered

  • THS4021 power dissipation

    Resolved
    1.- To calculate the "short circuit" (RL = 10R) power dissipation for this device: Pd = Ibias*Vcc + Iload*(Vcc-Voutput), is this assumption correct? (approx..) 2.- Which pin(s) of this device can be used to sink heat this device (D package…
    • Resolved
    • Answered

  • Glitch on the rising edge of the THS4021

    Resolved
    Other Parts Discussed in Thread: THS4021 , OPA830 I have a very simple circuit. Comparator, 9V single supply, Vinput = 0..3V square signal, Tr,Tf < 100ns. see below The output has an overshoot of 0.5V and a "drop" down to 1V on the rising edge…
    • Resolved
    • Answered

  • Glitch on rising edge of the THS4021 OPAMP

    Resolved
    I have a very simple circuit. see below The output has an overshoot of 0.5V and a "drop" down to 1V on the rising edge. the load is only 1K. any suggestions? 5047.Fig2.pdf
    • Resolved

  • RE: THS4631DDAEVM: Infrared detector amplifier

    Dear Sima The output voltage of the THS4631 for input signal from the photodiode is about 50 µV. The desired output voltage for the additional amplifier would be from 2 to 10 mV and output impedance 50 ohms since I work at high frequency (from 50 to…

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