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Hi Higa,
Would it be possible to get a revision B datasheet?
Here is the changes made from Rev. B to Rev.C in OPAx277 op amp.
Here is a copy of the OPAx277 RevB datasheet.
If you have additional questions, please let us know.
Best,
Raymond
Hi Raymond-san
Thank you for your prompt reply.
Although there is a long change history, the specs haven't changed.
Are there any changes that users need to be aware of in the design?
Regards,
Higa
Hi Higa-san,
Are there any changes that users need to be aware of in the design?
If the users are driving capacitive load, then the capacitive load circuit should be simulated for stability and step transient analysis (as always).
If the application is driving resistive load, no additional precautions are needed. It is always a good practice to simulate the circuit per the application requirements. Users should not see any surprises, since these are the same Si die design, not design changes are implemented.
If you need additional assistant and/or simulation, I can assist and please let me know. I am going to close the query for now.
Best,
Raymond
Hi Raymond-san
Thank you for your advise.
Yes, as you guessed, my customer is driving a capacitive load (the gate of Nch-MOSFET).
As for the simulation, does the model reflect the characteristics after the change in PCN?
What system is best to run the simulation on? (PSpice for TI? TINA?)
Best regards,
Higa
Hi Higa-san,
If you are able to provide me with the schematic, and I will see if I help you to perform the open-loop stability analysis.
The OPA2277 Spice model should work with the PCN version, since no significant changes have made.
What system is best to run the simulation on? (PSpice for TI? TINA?)
Both simulators will work for the analysis. It is the same Spice model, however, I prefer to run the simulation in Tina-TI, which is a bit faster and is able to provide comments on the simulation. PSpice simulator has more features, if you are used to the GUI interface.
If the customer does not want to post their circuit in the public forum, please send me "friendship" request via E2E, and I will be happy to work with you via E2E private messaging or via TI's internal email (once we established the communication).
Best,
Raymond