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Old 28th March 2002, 04:48 AM   #1
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Default output mosfet driver

I want to build a preamp that use opa2604 as main amplifier, and want to use a pair as output driver to increase the output capacity. Which mosfet is best to do it? The supply voltage is +- 18v.
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Old 28th March 2002, 05:58 PM   #2
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What load did you want to drive?
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Old 29th March 2002, 04:38 PM   #3
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Thanks reply, Pass.
I mean use a couple of mosfet in the preamp output stage. The mosfet is biased and connect to opa2604 output pin directly. Mosfet output is RCA connector. Which mosfet is better, IRF510 and IRF9510 or a small JFET is enough?
Any advice is appreciated.

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Old 29th March 2002, 05:42 PM   #4
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Try a Zetex ZVN3310 and ZVP3310 if your current
requirements don't exceed 10 ma
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Old 29th March 2002, 06:36 PM   #5
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Location: Dallas,Texas
Default Zetex mosfet

Hey! I thought they were only good for building computers with. I wonder if the mosfets are fast enough to use inside the feedback loop of the OPA2604. This might be a little tricky for a beginner though.

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Old 30th March 2002, 04:13 AM   #6
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I just read the datasheet of zvn3310, it is a nice mosfet. I will try it.
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