[rickcr42]

http://www.ortodoxism.ro/datasheets/...wn/mXxttvy.pdf

 

[grasshpr]

Second oldest to the ten commandments

 

[rickcr42]

page 31

THAT is how you do a line driver

 

[Garbz]

overkill as usual

 

[jcx]

Quote:

Originally Posted by rickcr42 page 31 THAT is how you do a line driver

???

[ not everyone needs a +16 dB boost starting at 1.6 KHz ]

 

[rickcr42]

layout topolgy but you knew that

 

[jcx]

even allowing for that it seems sub-optimal for audio

I would think pointing to Walt's "mixed feedback" transformer drivers in the audio amplifiers section (6.69-6.77) of his Op Amp Applications book would be more interesting, the feedback derived negative output impedance of the driver causes cancelation of the the real component of the transformer drive current which gives huge distortion reduction at low frequencies - allowing much cheaper transformers to compete

http://www.analog.com/library/analog..._handbook.html - section 6

 

[rickcr42]

Quote:

I would think pointing to Walt's "mixed feedback" transformer drivers in the audio amplifiers section (6.69-6.77) of his Op Amp Applications book would be more interesting

think whatever you like,I would rather build and use.A fully balanced driver with a balanced trafos output kicks a*s as a line driver.