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  • OPA172: OPA172 – Internal series resistor 2.5k ohm in each IN-/IN+

    Resolved
    Part Number: OPA172 Other Parts Discussed in Thread: LM324 May I know the OPA172 has a internal series resistor 2.5k ohm in each IN- and IN+? We had try to short IN- to ground (base on figure 46). We find OPA172 has higher short current than LM324. Do…
    • Resolved

  • Opa172 replaces lf357n

    Other Parts Discussed in Thread: OPA172 Replace lf357n with opa172, and the output waveform is incorrect。Please help me ！Thanks！

  • OPA172: application note TIDU765 high distortion

    TI Thinks Resolved
    Part Number: OPA172 Hello Team, My customer uses the preamp circuit based on TI's application note TIDU765. This application details how to uses a TI OPA172 opamp as an audio preamp for a condenser microphone capsule. They implemented the design, and…

  • OPA172: OPA172

    Part Number: OPA172 Other Parts Discussed in Thread: TLV9061 Hi Sir, The question is not exactly for OPA172 but looking for microphone preamp solution. My customer searching a suitable low voltage microphone compression IC for ANC analog feedforward mic…
    • Answered

  • OPA172: Circuit protection in the absence of VCC

    Resolved
    Part Number: OPA172 Thank you very much for your help. I want to protect the circuit from the voltage applied to the output when VCC is not supplied to the OPA172. Can you tell me the appropriate circuit configuration? In normal operation, 12v is supplied…
    • Resolved

  • OPA172: SGCC

    Part Number: OPA172 Is there a SGCC certificate?
    • Answered

  • OPA172: Made a preamp with OPA322 but have an issue

    Resolved
    Part Number: OPA172 Other Parts Discussed in Thread: OPA322 I'm a newbie, so please bear with me. I made this pleamp - https://www.ti.com/lit/ug/tidu765/tidu765.pd f - and it kind of works. But I made it with another mic model - https://mouser.com/datasheet…
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    • Answered

  • OPA172: Unity Gain phase response

    Resolved
    Part Number: OPA172 Other Parts Discussed in Thread: TINA-TI How do I find the phase response of the OPA172 for unity gain?
    • Resolved
    • Answered

  • OPA172: OPA172 Output oscillation and False trigger OCP issue

    Resolved
    Part Number: OPA172 Other Parts Discussed in Thread: OPA192 Hi Guys Our customer is using our opa172 as current sense. Please see below the schematic: But when they use it test the output current, the OPA172 Amp's output will be noisy or oscillated…
    • Resolved
    • Answered

  • OPA172: impedance matching in TIDU765 design

    Resolved
    Part Number: OPA172 Greetings everyone, I am going through the TIDU765 design (John Caldwell) and I need to know if it would not be better to add an adaptation network between the microphone output and C3, since the input impedance of the TIA is very low…
    • Resolved

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