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THS4509 Ro

THS4509 Ro

THS4509 Ro

(OP)
Hello,

I am using a THS4509 amplifier to drive a ADS5500 A/D converter.  I interested in findin the Ro of the THS4509 amplifier.  The Rout is provided in one of the data sheet curves and from that I derived that Ro = 50 Ohms based on B and Aol.  My problem is that I don't know if that is the no load Ro, because Ro will change with load current.  For stability I need to know what Ro is with no load. I tried to use TINA TI spice, but the model is giving me about 1 Ohm with close to no load.

Thank you.

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