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Showing 37 results View by: Thread Post Sort by
    Answered
  • OPA378: Can you really use a chopper in a high gain Transimpedance design?

    Michael Steffes
    Michael Steffes
    Resolved
    Part Number: OPA378 Other Parts Discussed in Thread: OPA392 , OPA387 , OPA333 So this is following up a bit on this earlier OSI photovoltaic design question. I got to thinking about how to really do this when offset voltage is critical - https://e2e.ti…
    • Resolved
    • 5 months ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA378: circuits and amplifier as a reference buffer

    Frank Xiao
    Frank Xiao
    Resolved
    Part Number: OPA378 Other Parts Discussed in Thread: REF3125 , OPA625 Hi team, My customer want to use the reference REF3125 to drive 0-5mA (PWM, 4.8khz), Do we have some recommend circuits and amplifier to support the requirement? if we have the simulation results…
    • Resolved
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum
  • OPA378: OPA378 for high source resistance thermopile

    ravi kumar89
    ravi kumar89
    Part Number: OPA378 Other Parts Discussed in Thread: LMP7731 , OPA325 , OPA376 Hi, I am planning to use OPA378 for interfacing a thermopile that has 68kOhm series resistance. circuit attached. On the non-inverting input, i have the thermopile. 1. Due to…
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • OPA378 1/f or Flicker Noise

    Keith Keller
    Keith Keller
    Other Parts Discussed in Thread: OPA378 , OPA348 Hello, The OPA378 op amp shows 0 (zero) 1/f or Flicker noise. Could you please explain why that is? Thank you, Keith
    • over 6 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA378 odd behavior

    Tim Sobering
    Tim Sobering
    Resolved
    Other Parts Discussed in Thread: TPL0102-100 , OPA378 , OPA330 , OPA335 , OPA376 , OPA188 , OPA333 , OPA2180 I am using an OPA378 as a buffer on a reference. It is configured as a unity gain buffer, with an RC filter (1MEG series, 15nF shunt) before the noninverting…
    • Resolved
    • over 9 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • EMIRR of OPA378 vs LMV831

    John Tillotson
    John Tillotson
    Resolved
    Other Parts Discussed in Thread: OPA378 , OPA347 , OPA369 , OPA334 , OPA313 , OPA376 , OPA330 , OPA333 , OPA188 , OPA180 , OPA170 , OPA171 Narional Semiconductor developed a method of measuring the EMI rejection ratio (EMIRR) of OpAmps in AN-1698. (This application…
    • Resolved
    • over 9 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: PMP8740: PMP8740

    a anbarasan
    a anbarasan
    Hi Roberto, Thanks for your inputs. Sorry, I forgot to mention that we have changed the gain to limit the current to 40A on individual converter. The output of the OPA378 is also as per calculations. As of now, everything is fine expect a small hissing…
    • over 1 year ago
    • Simulation, hardware & system design tools
    • Simulation, hardware & system design tools forum
  • Answered
  • RE: OPA189: Using opamp to create a precision negative voltage reference. Can opamp drive decoupling caps?

    Brett Gidge
    Brett Gidge
    Resolved
    ...oh also let me know if there is a better TI opamp to use in the inverting opamp configuration. I'm not married to the OPA191. I like the OPA378 but my rails are +3.3V and -3V and it can't handle that wide of a supply range. The opamp needs low offset…
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • TINA/Spice/OPA551: Showing different macro file

    Aftab Ashraf Av
    Aftab Ashraf Av
    Resolved
    Part Number: OPA551 Other Parts Discussed in Thread: TINA-TI , , OPA378 Tool/software: TINA-TI or Spice Models While entering to OPA551 MACRO it is showing a OPA551ex.TSC s OPA378 .please share the macro file of OPA551..
    • Resolved
    • over 3 years ago
    • Amplifiers
    • Amplifiers forum
  • If I have 25 photodiode and one ADC,how to design transimpedance amp circuit

    future chang1
    future chang1
    Other Parts Discussed in Thread: OPA378 , OPA2378 , IVC102 , ACF2101 , PGA116 If I have 25 photodiode and one ADC,how to design transimpedance amp circuit ? I have cost issue,so I can not use 25 transimpedance amp circuit. Could I use analog switch to switch…
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
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