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I am looking for an amplifier

 
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anasta
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PostPosted: Sun May 16, 2004 7:55 am    Post subject: I am looking for an amplifier Reply with quote

I am looking for a schematic for a preamplifier, for which the amplifier coeficient may be changed by a microcontroller. Is there such an Integrated circuit?
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elp4u
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PostPosted: Sun May 16, 2004 7:58 am    Post subject: Reply with quote

There are many IC like this, made by Philips, which are controlled by a 2-wire I2C bus, i think they are from the series TDA8ХХХ - check out the Philips web site if you are talking about digitally controlled ICs and you are good in programming.
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