Hi,
I'd like to know how can I model the output references (Vref10, Vref5, Vref2.5 and VrefBG) according to the INA125's single power supply (2.7V~3.6V, for example).
This modelation will be able to perform a fast calibration of my system.
Thank you,
Hello Daniel,There is a PSPICE model available for the INA125 located in the device's product folder (http://www.ti.com/product/ina125). The model was developed 15 years ago so I am unaware of which datasheet parameters it accurately models. Looking at the *.mod file, however, shows nodes for each of the Vref pins. At this time there are no plans to update this model.I hope this helps!
Regards,
Pete Semig
Precision Analog Applications
I try Pspice model with full version 2001 of pspice, and it doesen' work. Can you verify, please?
Nicola
Hello Nicola,
I typically use TINA SPICE. Therefore I created a TINA macromodel using the SPICE file and created a simple test circut. It is attached. Performing a DC analysis shows that the reference voltages are present. The only caveat is that it appears as though the polarity of the input is invertered as can be seen by a DC simulation.
I hope this helps.