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17th February 2004, 04:57 AM
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#1 |
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diyAudio Member
Join Date: Jan 2004
Location: ac
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OPA549T help!!
This morning i'de recieved 2 pcs. of this chip sample from Texas instrument. I wanted build a gain clone using this chips. I need a schematic to do this, is there anyone used this chips for their project?
In the schematic below... What sould be the value for R1 and R2? for the good output result? |
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17th February 2004, 06:49 AM
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#2 |
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diyAudio Member
Join Date: Dec 2001
Location: SIUE, Illinois, USA
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those resistors set gain:
(R2/R1) +1 = gain. most people go between 10 and 30, with 20 being a good goal. i'd say R1 = 1k and R2 = 20k would be fine. or you could double those numbers, ect.
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if only it could be used for good, not evil... |
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17th February 2004, 06:51 AM
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#3 |
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diyAudio Member
Join Date: May 2003
Location: Palatiw, Pasig City
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just pay attention to the pin-outs, this is just an opamp with huge power output....there are many to be found in these threads..
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Placebo medicine works best when the doctor believes in it too. Next best is when the doctor is good at pretending to believe in it.DF96 |
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17th February 2004, 07:09 AM
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#4 | |
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diyAudio Member
Join Date: Jan 2004
Location: ac
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Quote:
First, I wanna thank you (joan2) for giving me the idea where to get a sample chips.... thanks!!... Second, how this chips sound like? are they good as the LM's do? I tried to order chips from national but my request is in hold due to import/export issues in our country....I hope this essues will be solved soon so i can request for a sample chips  How much Output wattage (minimum/maximum)this chip can deliver? |
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