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Showing 11 results View by: Thread Post Sort by
    Answered
  • OPA4990: OPA4990IRTER & OPA4990SIRTER

    kevin.huang_FJXM
    kevin.huang_FJXM
    Resolved
    Part Number: OPA4990 HI: Differences between OPA4990IRTER and OPA4990SIRTER
    • Resolved
    • 4 months ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA4990: OPA4990IRUCR

    Minglai Kao
    Minglai Kao
    Resolved
    Part Number: OPA4990 1. Is the short-circuit current of +/- 80mA for 4 channels or each channel? 2. When the load increase, this current will decrease, right? 3. How will the open-loop output impedance affect on the max load current? 4. Does the X2QFN…
    • Resolved
    • 10 months ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA4990: POR

    Oba
    Oba
    Resolved
    Part Number: OPA4990 Other Parts Discussed in Thread: OPA4197 , OPA2990 Hello Does OPA4990 have POR? My customer wants to use an OpAmp that doesn't have POR to avoid inrush current at POR release timing. Regards, Oba
    • Resolved
    • over 1 year ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA4990: the comparison between, LM2902KAV, OPA4990, OPA4171.

    Red Yen
    Red Yen
    Resolved
    Part Number: OPA4990 Other Parts Discussed in Thread: LM2902KAV , OPA4171 , , TLV9154 Hi Support team my customer would like to optimize the performance of Op-Amp for low-side current sense. (LM2902KAV, OPA4990, OPA4171.) The Op-Amp Circuit is as below…
    • Resolved
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • OPA4990: OPA4990 output cap max recommend value

    Red Yen
    Red Yen
    Part Number: OPA4990 Hi Support team since the noise coupling, my customer would like to increase the output cap to maybe 0.1uF to filter the noise, the AC_L1 & AC_N1 is 50-60HZ AC sin wave AC input the application is as following, pls kindly let…
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA4990: RTM (Release To Manufacturing)

    Hide
    Hide
    Resolved
    Part Number: OPA4990 Other Parts Discussed in Thread: OPA2990 Hi Team, I have two questions. [Q1] Could you please let us know RTM of OPA4990IPWR(TSSOP) and OPA4990IRUCR(QFN)? [Q2] Do you have plan of development of VSSOP PKG? If yes, could you please…
    • Resolved
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • Answered
  • OPA4990: TI P-P solution to replace MC33174DT

    Sean Liao (Yu-Sheng)
    Sean Liao (Yu-Sheng)
    Resolved
    Part Number: OPA4990 Other Parts Discussed in Thread: TLV9304 , , OPA4991 , OPA2991 , TLV9352 , TLV9354 Hi sirs, Please kindly suggest if we have p-p solution to replace MC33174DT. Vin 40V, 4Ch. Thanks a lot! BR, Sean Liao
    • Resolved
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: TLV9304: Please let me know RTM Schedule.

    Tim Claycomb
    Tim Claycomb
    Hello, The TLV9304 and OPA4990 in the PW package are expected to RTM tomorrow. Thank you, Tim Claycomb
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: TI replacement for an Analog Devices AD824 amp.

    Tim Claycomb
    Tim Claycomb
    Hi Michael, The POPA devices are pre-production samples. Once the device RTMs the "P" device will be removed and only the OPA will be available. I would recommend the OPA4991 or OPA4990 over the OPA417x device. The OPA4990/1 have better performance, are…
    • over 2 years ago
    • Amplifiers
    • Amplifiers forum
  • RE: Control voltage 0-10 vdc to 0 to 95% duty-cycle pulse width modulation at 200 Hz - looking for circuit design which achieves stable performance over entire range of control voltage

    Ron Michallick
    Ron Michallick
    Raymond, The TL494 example doesn't go to 95%. Below is a quad op amp, solution. C2 should be 1uF to reduce reference voltage ripple. However the simulation crashed that way. All four op amps are OPA4990 channels (LMV321 model inserted twice because…
    • over 2 years ago
    • Clock & timing
    • Clock & timing forum
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