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  • OPA544: +Ve power supply not providing

    Part Number: OPA544 Is there any problem or issue if we didn’t give power for +V but we maintain –V for OPA544T and will not give any input signal also during this time? we don’t expect to OPA544T as working during this time But would like to know whether…

  • OPA544: OPA544

    Part Number: OPA544 Dear Sirs, good evening! We got device OPA544T and it was written Burr Brown on the device Burr Brown. Could you confirm that this device is legal and is still manufactured by TI with the Burr-Brown logo? There is letter "B' on the…

  • OPA544: Difference between simulations and the observations in the prototypes

    TI Thinks Resolved
    Part Number: OPA544 Other Parts Discussed in Thread: OPA828 , TINA-TI Our design uses OPA544T. We have simulated the design using the model available. PFA .TSC file, FYR. OPA544_12V_Switching_500KHz.TSC Waveforms from the prototypes Testing…
    • Answered

  • RE: OPA544: Output Stage of OPA544

    Resolved
    Hi Thaoms, Thank you for your reply. I understand OPA544 is NPN/NPN power stage. I'll share your suggestion with the customer. I appreciate your great help. Best regards, Shinichi

  • opa544: OPA544 drops 4dB gain

    Part Number: OPA544 Other Parts Discussed in Thread: OPA544 I have a device that use the opa544 as audio amp. This device is manufactured for for several years with no problems. Some devices of the last produced batch accidental have a too low output…

  • OPA544: OPA544

    Part Number: OPA544 Other Parts Discussed in Thread: OPA548 , OPA548EVM I am using the DAC161S055 as a 0 to 5VDC source. I would like to increase the current drive to at least 3A with good 1:1 voltage following. It was suggested that the OPA544 or 548…

  • OPA544: BI-TINA SPICE Simulation Model with Slew Rate Control Parameters included + device with increased slew rate

    TI Thinks Resolved
    Part Number: OPA544 Other Parts Discussed in Thread: TINA-TI , Our design uses OPA544T. Test results of the circuit with the OPA544T does not match with the simulation results. Datasheet of the OPA544T includes the following information: It looks…
    • Answered

  • RE: OPA544: Simulated VS acutal howland current source

    Resolved
    Hi Joel, two final points: To decrease the heat dissipation within the OPA544 you can choose a lower supply voltage for the OPA544. +/-25V should be ok. Also, I think there is no need for U4 and U6 in your circuit. Or am I wrong? Can you tell me…
    • Answered

  • OPA544: About "FIGURE 5. Digitally Programmable Power Supply"

    Resolved
    Part Number: OPA544 Hello Team, I have a question about the reference circuit of "FIGURE 5". Is not it necessary to have a capacitor for phase compensation in the circuit? Best regards, Kato
    • Resolved
    • Answered

  • OPA544 / difference result between TINA-TI simulation and actual evaluation

    Resolved
    Other Parts Discussed in Thread: OPA544 , TINA-TI Hi TI members, My customer is designing V/I conversion circuit with OPA544. He found a difference result between that of TINA-TI simulation and actual evaluation, and wants to know a root cause. Could…
    • Resolved

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