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Old 1st February 2013, 04:40 PM   #1
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Default what are the complications in building 12 pair of output ex: Aleph 1.2

what are the complications involved in getting the amplifier up with 12 pairs of IRFs example:Aleph 1.2

will there be any stability issues to be considered? any tips please...
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Old 1st February 2013, 08:20 PM   #2
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Of course you have to match the devices.

Stability issues did not come up, but you are looking at lower bandwidth in
the output stage for a given bias current through the input diff pair.

For greater bandwidth you can increase in diff pair current by a factor of 2,
and if you see any oscillation, you can increase the lag capacitances.

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Old 1st February 2013, 08:44 PM   #3
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I believe the standard Aleph 1.2 has 12 pairs already.....?
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