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2nd July 2005, 02:40 PM
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#1 |
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diyAudio Member
Join Date: Apr 2004
Location: HKSAR
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Question about Pass D1 I/V output stage
Hello,
I have a DAC with parallel AD1865N-K. But I'm not sure whether the output stage will work fine or not. The current output in each Iout pin is +/- 1mA. Therefore when I have 8 of them connected in parallel, Iout becomes +/- 8mA. And now in the Pass output stage the IRF610 is biased at 10mA. Does that mean the limit of Iout will be 10mA? Furthermore, what shall I do if I stack 16 of them in each channel? Regards, PatPet |
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2nd July 2005, 06:16 PM
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#2 |
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diyAudio Member
Join Date: Dec 2002
Location: Sydney, Australia
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If IRF610 is in common gate configuration then its current will be +18mA to +2mA. If there is an I/V resistor you will need to lower its resistance by the same factor you increased the current swing by to have the same output voltage swing.
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