This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO224: Error occurred after converting TINA-TI model to SPICE model

Part Number: ISO224
Other Parts Discussed in Thread: TINA-TI

Hi Team, 

My customer wants to use SPICE model of ISO224 so he converted from TINA-TI model on TI.com followed by the instruction of this video.

(symbol was generated from ".SUBCKT ISO224X VCAP IN VDD1 GND1 GND2 OUTN OUTP VDD2")

However, error message "Voltage source E:U1:INPUT:BIAS:U20:U1:GND is shorted making an over-defined circuit matrix" showed and couldn't run AC analysis in SPICE simulator.  

After looking up for the reason, it seems error occurs from following 3 commands. After customer commented out these 3 commands, though the error still occurred but he was able to run AC analysis. 

Could you help take a look what may go wrong here? Please let me know if you need any more information. Thanks. (I attached the full information after converted to SPICE as below.)

*XU1         V_FB 89 VIN GND AM_OUT STDOPAMP

*+ PARAMS: RIN=100MEG GAIN=1K RINC=1E9 ROUT=1000 SLEWRATE=15MEG FPOLE1=20000

*+ VDROPOH=0 VDROPOL=1.55 CIN=100F CINC=100F

ISO224.txt
Fullscreen
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
*****************************************************************************
* (C) Copyright 2018 Texas Instruments Incorporated. All rights reserved.
*****************************************************************************
** This model is designed as an aid for customers of Texas Instruments.
** TI and its licensors and suppliers make no warranties, either expressed
** or implied, with respect to this model, including the warranties of
** merchantability or fitness for a particular purpose. The model is
** provided solely on an "as is" basis. The entire risk as to its quality
** and performance is with the customer
*****************************************************************************
* Released by: Analog eLab Design Center, Texas Instruments Inc.
* Part: ISO224X
* +-12-V Single-Ended Input, Reinforced Isolated Amplifier
* Date: 03/12/2018
* Model Type: TINA
* Simulator: TINA-TI
* Simulator Version: 7.0.30.267 SF-TI
* Datasheet: SBAS738 - 26.JAN 2018
*
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Regards,

Jo