EZDAC Output Impedance
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TedS
Feb 21, 2007, 12:59:01 PM2/21/07
to EZDAC Builders
Can anyone tell me the output impedance of the EZDAC? If/when I build
the EZDAC, I plan to use it with a passive preamp. The DAC output
will see a constant 10kohm load. Will it be able to drive that load
OK?
the EZDAC, I plan to use it with a passive preamp. The DAC output
will see a constant 10kohm load. Will it be able to drive that load
OK?
Thanks!
Ted
ezkcdude
Feb 21, 2007, 3:19:56 PM2/21/07
to EZDAC Builders
The short answer is I don't know the output impedance, haven't
measured it. However, I have used the DAC straight into my Parasound
Halo A23, which has an input impedance of 30k, and had no problems. I
don't think you will have a problem.
measured it. However, I have used the DAC straight into my Parasound
Halo A23, which has an input impedance of 30k, and had no problems. I
don't think you will have a problem.
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t5
Feb 21, 2007, 3:25:42 PM2/21/07
to EZDAC Builders
as the output is straight from an opamp it will be fairly low, some
tens of ohms probably - no problem to drive 10k!
tens of ohms probably - no problem to drive 10k!
TedS
Feb 22, 2007, 1:02:39 PM2/22/07
to EZDAC Builders
Thanks for the replies, guys! That's good to know!
Ted
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cyclebrain
Apr 6, 2007, 12:37:15 AM4/6/07
to EZDAC Builders
Tens of ohms is correct. I have been thinking about adding a 100 ohm
resistor in series with the output as a protection safeguard to the
output in case of a short circuit at the output. Insignificant
relevant to the input of any preamp. 100 to 500:1.
resistor in series with the output as a protection safeguard to the
output in case of a short circuit at the output. Insignificant
relevant to the input of any preamp. 100 to 500:1.
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