• OP177 SPICE model

    I have downloaded the SPICE model file for the OP177 but found that it actually contains the model for the OP1177.

    Where can I get the proper SPICE model file for the OP177 ?

  • OP177 power sequence


    I will ask questions about the power supply sequence of OP177.

    Originally it should start up ± power at the same time, but the negative side is the rising earlier by the circumstances of the other of ICs.

    So, after the rise of the negative power…

  • about OP177 amp how work

    how the circuit worhs,how the relationship between output and input is calculated and derived.

  • Offset Voltage adjustment for OP177

    Dear Sir/Madam,

    Our customer asked th following question to me.

    As for your OPAMP OP177GSZ,

    your datasheet shows the adjustable offset voltage adjustment range is +/-3mV typ by adding 20kohm POT on Rp.

    So if we need it +/-6mV, then what is the external…

  • AD620, digitally adjusted reference pin


    I use AD620 in order to amplify my loadcell signal. I have +/-15V present. I regulate these voltages to 10V and -11V. I use 10V to excite loadcell. Also I use 10V to power AD620 and OP177 op-amps. (There is a filtering circuit after AD620 with couple…

  • RE: OP177G / Difference Amp

    Dear Harry,

    Thanks for the informative reply. I have hit the books since your reply and made an excel sheet that incorporates all the details (input offset volts, current, input bias current, Rth of the wheatstone bridge). Waiting to get back to office…

  • RE: OP2177 protection diode

    Hi Areski,

    You can use the OP177 datasheet, which has an internal circuit. These amps are related



  • 恒流源电路问题,不同运放效果还不一样,不知道怎么回事!


  • 442 - I cannot find the datasheet for the 442 (old OPAMP Module)

    I cannot find the datasheet for the 442 (old OPAMP Module)


    Please find attached.

    A suitable replacement is the OP177 or OP1177.
  • AD711 replacement solution

    Hello there

                       Ask everyone, what alternative chip or solution is there for the AD711 chip,

    can OP07 or OP177 completely replace the AD711? Or there are other better chips.


                                                                                                                       Thanks everyone…