Import OPA615 model into TINA-TI

luigi raffaele sapone

Other Parts Discussed in Thread: OPA615, TINA-TI

Hello Everybody

I am interested in building a peak detector for signals in a frequency range from a few Hz to 10 MHz.
I think it is very difficult to perform such a task in analog mode (without using AD converter and associated logic), due a poor performance in term of variation of "DC output" to "Input Amplitude" ratio in the very large frequency range of interest. But due to the convenience of the analog solution in terms of power consumption, I decided to try it.
I have identified the component OPA 615 and I tried to import its PSpice model in TINA TI.
So, I have changed the file extension, from original .sub to .lib and I tried the TINA TI command "File / Import /PSpice Netlist."
After compiling the OPA615 model I found the error, as in the attached screenshoot .
Is there a problem in the model or I made some wrong operation?

Thanks very much

Best Regards

over 12 years ago

0 Marcos López - Online design tools over 12 years ago

TI__Intellectual 2290 points

Luigi,

I was able to reproduce the error "syntax" error you were getting and the problem was the name used for the input pins. The model uses S/H_xx and the "/" creates

these sort of problems in TINA. I did a find and replace and changed all S/H to SnH and I was able to convert the circuit into a macro, however I did not run any sims to

corroborate correct behavior. I have attached my .lib file with the corrections mentioned above. Give it a try and should any further questions or concerns arise please feel

free to repost and we will be glad to help.

Best regards,

Marcos.

OPA615_Model.lib

0 Britt Brooks - Online Design Tools over 12 years ago

TI__Mastermind 41310 points

Luigi,

It appears that the node name has a slash in it. While this matches the datasheet, there are some simulators that do not like this kind of character in the node name. We strive to avoid this kind of issue, however, it does still occur. Please note that if you change the S/H to S_H and change the node names from $NXXX to NXXX, the model can be imported into TINA-TI. I have attached the .TSM file (TINA macro) for your convenience.

In order to use the macro, simlpy save it to your computer and then use Insert--->Macro to place the OPA615.

0677.OPA615_Model.TSM

Britt

0 Nico Marome over 11 years ago in reply to Britt Brooks - Online Design Tools

Intellectual 280 points

7043.forum circuit.TSC

Hi Britt

i have atttached a circuit similar to the one in the datasheet on page 20, i want to show that the OPA615 is a fast ns pulse detector

my graph always gives a voltage value of 0 irrepesctive of the kind of input signal

Are you able to simulate this circuit?if so what am i doing wrong?

Thanks in Advance

0 Britt Brooks - Online Design Tools over 11 years ago in reply to Nico Marome

TI__Mastermind 41310 points

Nico,

Instead of using the VM across the 50 ohm resistor, try using the VM from the end of the 50 Ohm resistor to ground. I am not exactly sure what you are looking for, however, this would besimilar to the fast integrator in the datasheet.

Britt