T
Tolstoy
Guest
I found what I thought was the perfect part for a current mirror.
Datasheet here:
http://www.infineon.com/dgdl/bcv61_shrink_1.pdf?folderId=db3a304412b407950112b408e8c90004&fileId=db3a304412b407950112b426897539ca
But then I saw the spec on page three for matching of the collector
currents, the datasheet says it can vary from .7 to 1.3. Is this for
real? I dug out a tape of pn2222a transistors and checked a bunch of
the transistors on the tape at random, and the max error was way short
of ten percent. You'd think a dedicated current mirror would work at
least as good, by design. Maybe they're just being super-conservative
on the datasheet, but it puts me off buying the part. I have to go by
the numbers they publish.
Datasheet here:
http://www.infineon.com/dgdl/bcv61_shrink_1.pdf?folderId=db3a304412b407950112b408e8c90004&fileId=db3a304412b407950112b426897539ca
But then I saw the spec on page three for matching of the collector
currents, the datasheet says it can vary from .7 to 1.3. Is this for
real? I dug out a tape of pn2222a transistors and checked a bunch of
the transistors on the tape at random, and the max error was way short
of ten percent. You'd think a dedicated current mirror would work at
least as good, by design. Maybe they're just being super-conservative
on the datasheet, but it puts me off buying the part. I have to go by
the numbers they publish.