Until that is, current reaches the point where one channel voltage drop reaches the Vth of the other jfet – say T2. At this point T2 starts to turn off, which causes the gate voltage of the p-channel ...

Thus, B = 1. For 0.1 nA = Ig . √ 2qIgB = 0.00566 pA/√ Hz = noise density current from the gate of the JFET. In comparison to 0.60 pA/√ Hz for the input noise density current for the NE5534, the JFET ...

It also converts a normally-on JFET into a normally-off cascode. The normally-on SJDP120R085 is a 1.2kV device with a positive temperature coefficient for ease of paralleling, 27A saturation current ...

Using a bootstrapping scheme with a JFET can enhance a photodiode’s ac response, but adds unwanted dc voltage. Remedy that problem with a matched dual-JFET.