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In Reply to: RE: An intelligent & informative discuss: thanks, gentlemen posted by E-Stat on September 17, 2011 at 08:56:29:
It might be worth noting that my $50 DAC uses a Wolfson WM8740 DAC; this chip provides voltage output rather current output, the latter being more common for DACs. This means that the DAC as a whole eliminates the typically necessary current-to-voltage (I/V) stage usually provided by opamps. Instead my cheap DAC has only a buffer stage; here I substituted a (relatively) expensive OPA627 opamp pair for the original OP275.
NOT the 51st state, eh!?!
Edits: 09/17/11
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Follow Ups
- Tube source - Feanor 11:56:53 09/17/11 (1)
- Tubes still tend to be more linear voltage devices - E-Stat 13:35:40 09/17/11 (0)
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