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Old 25th May 2003, 11:37 PM   #1
jwb is offline jwb  United States
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Default Dual FETs for differential pair

I am fairly tired of matching IRF9610s! Has anyone here tried using dual FETs for this front-end? Fairchild and Zetex both have promising-sounding parts (e.g. NDS9948, ZXMD63). These devices are obviously highly temperature coupled and produced from the same wafer, so they should be matched fairly well.

But, do they sound good?
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Old 26th May 2003, 01:31 AM   #2
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Hey,

Aren't they too small?

T
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Old 26th May 2003, 01:35 AM   #3
jwb is offline jwb  United States
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I'm only trying to dissipate about 300mW.
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Old 29th May 2003, 12:24 PM   #4
Nicwix is offline Nicwix  Australia
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See NP's reply to: ...what about using a dual MOSFET, rather than worrying about matching discrete pieces

Regards
Nic
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Old 29th May 2003, 07:39 PM   #5
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We use 2SK389's and 2SJ109's a lot, and they work
really well. MCM sells them.
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