Some eye candy for Phil :^)
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Tim
-- Seven Transistor Labs, LLC Electrical Engineering Consultation and Design Website:
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BF862 die shot
Feb 08, 2021
2 Replies
Such a pity NXP stopped making it. It was such a nice part.
Jeroen Belleman
Yeah, I like it so well that I have eight reels of them on the shelf. ;) For customer designs I use the CPH3910 instead. It's about 1 dB quieter even, but has an inconveniently high I_DSS (30-40 mA). (I have five reels of those too.)
The I_DSS matters because I often want to run a bootstrap at zero offset voltage. Doing that allows me to use a nasty fast CFA instead of a nice polite FET VFA, because the op amp doesn't connect to the summing junction.
Cheers
Phil Hobbs
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510
http://electrooptical.net
http://hobbs-eo.com
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