I am new circuit designer. Now my boss give me a schematic about bias. It is very simple, but it is different from schematic from book. The next pic is schematic, the number on schematic is DC point.
I think it is different from book. why the schematic use two PMOS, why the gate of the first PMOS direct connet with D of the second PMOS? I simulate the schematic, the result show that the first PMOS in the trigion.
The two PMOS structure in the picture is called "self-cascode" structure. You can refer to the attached paper to study the characteristics of this kind of structure.
HI
If W/L of two transistors are equal, two transistors act as a transistor with W/2L.
so for a givven current we have higher Vgs and then Lower Vg.
regards
HI
If W/L of two transistors are equal, two transistors act as a transistor with W/2L.
so for a givven current we have higher Vgs and then Lower Vg.
regards