OPA835: OPA835 simulation

Julian Merlin

Part Number: OPA835
Other Parts Discussed in Thread: TINA-TI

Hello,

I want to use the OPA835 in a LTspice simulation. However the OPA835.lib file seem to be incorrect or is not understood properly by LTspice. Simulation throughs an error:

ERROR: Node U2:I21:1:102 is floating and connected to current source G:U2:I21:1:RA
ERROR: Node U2:I19:1:102 is floating and connected to current source G:U2:I19:1:RA
ERROR: Node U2:I19:1:302 is floating and connected to current source G:U2:I19:1:RC

u2:vprobe1: Missing value, assumed 0V @ DC
u2:vprobe2: Missing value, assumed 0V @ DC

Is there a fix?

over 4 years ago

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Julian,

why not running the simulation in TINA-TI?

Do you have a schematic?

Kai

0 Michael Steffes over 4 years ago

Guru 48395 points

It does seem like the model updating work that has been going on since 2018 is adding features that LTSpice does not recognize. Here is the original 2011 model in a .lib file, see if that will work for you. That model had some accuracy problems but it may run,

OPA835 2011 model.lib