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  • OPA891: opa891 bandwidth issue

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    Part Number: OPA891 Other Parts Discussed in Thread: OPA892 , OPA814 , OPA810 Hi TI expert The attachment shows the function of adder amplification. Vg2 is a 20 MHz sine wave . The bandwidth of opa891 is 180MHz. The simulation results show that the…
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  • OPA891: OPA891 and OPA892

    Part Number: OPA891 Other Parts Discussed in Thread: OPA892 , , OPA2892 Hello Experts, This board will be used for designing a probe for measuring switching currents of a high-speed SOC. The input voltage range is expected as 250uV to 7.5mV. OPA891…

  • OPA891: TINA-TI - Hybrid Topology Open Loop Sims

    Part Number: OPA891 Other Parts Discussed in Thread: JFE2140 , OPA2891 Tool/software: Hello, I have a hybrid differential amplifier topology using the JFE2140 and dual package OPA2891 amplifier. I am trying to simulate some stability analysis but am running…
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  • OPA891: OPA891适合做音频DAC I/V转换的运放吗？

    Resolved
    Part Number: OPA891 Other Parts Discussed in Thread: OPA1611 , Tool/software: 请问，OPA891适合做音频DAC I/V转换的运放吗？如下图把OPA1611替换成OPA891。谢谢。
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    • Answered

  • OPA891: Maximum output current vs ABSMAX output current

    Resolved
    Part Number: OPA891 Tool/software: I'm contemplating using the OPA891 in a low-distortion audio source with a 50 Ω output impedance. I would like the OPA891 to survive if the output is shorted to ground, preferably indefinitely. There is no maximum…
    • Resolved

  • OPA891: As Power Amplifier

    Part Number: OPA891 The OPA891 data sheet front-page "Applications" section cites "Professional Audio Amplifier" but the minimum recommended build-out resistance is 20R. I assume the "Pro Amplifier" refers to a headphone amplifier (150R) rather than…

  • OPA891: Is the input Z of this device really just 6k?

    Part Number: OPA891 Tool/software: The spec sheet says the Input Z in the differential mode is 6K. I downloaded the TINA simulation example which in a non inverting buffer, (gain of 1) and inserted a 100k resistor in series with the plus input. Sure…

  • OPA891: test circuit description and analyzer/method for THD and IMD measurements

    Part Number: OPA891 Hi TI how is the THD and IMD graphs measured in the OPA891 datasheet? Figure 5-35 shows THD+n below -135dB and figure 5-36 IMD in the ballpart. i dont know any THD analyzer that can measure this low THD... rgds Kim

  • PSPICE-FOR-TI: Apparent unexpected instability of integrator with low-value bias resistor​

    Part Number: PSPICE-FOR-TI Other Parts Discussed in Thread: OPA891 Hi Experts, Can you help with the inquiry below? I'm looking for some clarity if what I'm seeing is real, or a simulation artifact due to an imperfect model. I'm simulating a PLL response…

  • OPA2891: Low cost low noise input amplifier suggestion

    Answer Suggested
    Part Number: OPA2891 Other Parts Discussed in Thread: OPA891 Tool/software: Dears, Customer want to find low noise input amplifier (<1nV/hz) ,I find OPA2891/2892 can meet this request. But customer said that the price of OPA2891/2892 is too high, he…

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