J
Joel Kolstad
- Jan 1, 1970
- 0
Assuming you're not intending to forward bias a JFET's gate, is there much of
a difference between designing a circuit using a depletion mode MOSFET vs. a
JFET? What are the pros and cons of each? Or -- if they're not so
dissimilar -- is this one of the reason that depletion mode MOSFETs are
relatively unusual?
(I'm assuming N channel devices here since -- per AoE -- P channel JFETs
aren't generally available.)
As far as I can tell, the most obvious difference is that there's a reverse
leakage current coming out of a JFET's gate, whereas MOSFET gate leakage is
almost nothing.
---Joel Kolstad
a difference between designing a circuit using a depletion mode MOSFET vs. a
JFET? What are the pros and cons of each? Or -- if they're not so
dissimilar -- is this one of the reason that depletion mode MOSFETs are
relatively unusual?
(I'm assuming N channel devices here since -- per AoE -- P channel JFETs
aren't generally available.)
As far as I can tell, the most obvious difference is that there's a reverse
leakage current coming out of a JFET's gate, whereas MOSFET gate leakage is
almost nothing.
---Joel Kolstad