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TINA/Spice/THS3092: Simulating Precision Half-wave rectifier at 7MHz

Part Number: THS3092
Other Parts Discussed in Thread: TINA-TI, LMH7322

Tool/software: TINA-TI or Spice Models

I am having an odd issue. I have two separate precision half-wave rectifiers testing two different diodes in my simulation. Individually, they both seem to operate fine; I delete one and the other works in both cases. However when I run them both at the same time, I get a very odd output that seems false! It is quite puzzling! I also get fine results when I lower the frequency of one of the sources from 6.78MHz to 6MHz! 

Very strange behavior. I am wondering if there is a bug in the software or if there is something that I have done incorrectly! 

I have attached the file and some screen shots. Resonant_Filter_Test.TSC