G'day,
I'm using Tina-Ti to simulate the LME49713 driving a low impedance load (25R) wtih a low voltage source (0.5Vrms). When run with 100% feedback as a buffer, I don't have a problem. However when I either raise the input voltage, or apply negative feedback gain (2.3x gain), distortion shoots through the roof, as does noise (relatively).
I even tried the TI Reference Spice schematic and got similar distortion. It seemingly doesn't like much input voltage, or it requires a special circuit.
So I've looked up the evaluation board LME49713MABD but can not find the schematic nor user guide.
Could I please get a link or email of the schematic & user guide for the eval board.
Also, could I please get advice as to why the LME49713 isn't behaving with some voltage in the Tina simulation.