2. Re: Olympus LS-14 initial thoughts

["Avocet" madl74]

Greg,

Thank goodness someone else understands what I have been rembling on
about. :-)

> For the INA163 this is 1500 - 2500 ohms, depending on what value you
> pick for Ein (it is frequency dependent). This is certainly not 150
> ohms, so I wonder what the actual real-world noise performance of
> this op amp will be.

My guess is 10dB improvement with a matching transformer, as we are
discussing noise energies. In addition, two input amps to give a fully
balanced input adds an extra 3dB noise. A transformer loses about 1dB.

David

David Brinicombe
North Devon, UK
Cogito cogito ergo cogito sum - Ambrose Bierce