Help with isolation transformer

[milanino]

What is the reference of the transformer in this circuit?
and can i remplace it with another circuit without using a transformer ?
help me please

 

[chuckey]

See TI application sheet p.9 **broken link removed** As i said its a resonent ferrite based transformer.
Frank

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See TI application sheet p.9 http://www.ti.com/lit/ds/snas544a/snas544a.pdf As i said its a resonent ferrite based transformer.
Frank

 

[Audioguru]

The datasheet for the obsolete old IC says to use a Toko transformer that is also obsolete.

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The datasheet for the obsolete old IC says to use a Toko transformer that is also obsolete.

EDIT: When I press "Post Reply" then nothing happens. Why?
Then after a minute my reply is doubled. Why?

 

[D.A.(Tony)Stewart]

unfortunately TI is out of the power line current carrier RF business

There are other sources but TI is now focused on emerging techs.
https://e2e.ti.com/support/low_power_rf/b/lprfblog/default.aspx

 

[chuckey]

You could try using a pulse isolation transformer, this would give give you your isolation, it could also do some impedance matching(~ 10:1 required). This would have to have a high pass filter as well with a pass band tuned to your carrier frequency (which you do not give)
Frank

 

[milanino]

How to do that M.chuckey ??
have you schematic to do it . i need to replace the transformer with another device but i haven't found

 

[chuckey]

Some thing like :- https://uk.rs-online.com/web/p/toroidal-transformers/7156951/ this one has 1KV insulation to keep the mains out of your IC !! What is your carrier frequency?
Frank

 

[milanino]

50Hz for the carrier and 125khz for the lm1893