TINA/Spice/TPS7A33: Simulation with this device (along with the TPS7A4700) works with resistor loads, but the circuit stops working properly when I connect a Balanced Line Receiver (THAT1200) as a load

Tool/software: TINA-TI or Spice Models

Hello,

I have built an LTSpice model (shown in the attached) for the TPS7A4700 and TPS7A33. When I add resistors, it still functions. Likewise the Balanced Line Receiver THAT 1200 works well too, when using voltage supplies provided in LTSpice. However, when I add the THAT 1200 Balanced line receiver, the circuit no long works. It appears to start out with a DC voltage on the output, which I think may be affecting the output regulation function.



Can you please have a look and see if you see any clues as to why this would happen?


Thanks in advance,
Cody

1200_test.zip