Does it exist? Would it work? Could it be extremely cheap? Does anyone make a "small" surface mount pmos depletion device at all?
Vgs_off of "regular" JFET parts like a MMBFJ271 go up to 4.5 V, which is too high. Or for J270, the min I_DSS is too low.
- --- GND ----- | | |S-+ V O------G|| |D-+ | +------O V | \ / \ 1k / | | ~ -5V