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transistors - Large SiGe ASICs for digital logic - Electrical . . . Are SiGe NPN transistors used to build digital gates? Yes This is done either for very simple, small logic, when you might need a few hundred control gates in a power amplifier or similar (and you can save the cost of the BiCMOS part in the process), or when logic needs to be really fast (for example in some of the building blocks in PLLs)
Change the sheet size shape in Altium PCB editor The " Sheet " layer is just like any other mechanical layer (see the " View Configuration " panels -> " Layers Colors "), and you'll probably need to add it manually unless you have a template setup After drawing an outline, uncheck and re-check the " Get Size From Sheet Layer " box (or close re-open the PCB), and Altium will then use the extremes of whatever you place on that layer for the
Highest speed of operation [BJT vs MOSFET] [closed] You can make SiGe bipolar transistors (on a chip) with ft's approaching 100GHz, and 4000 series CMOS (enhancement mode MOSFETS) that struggle to switch at 5MHz with low supply voltage
How do I get a bigger sheet size in Altium, updating current one? I have a schematic sheet and I need more free space on it The actual size is A4 I have right-clicked in the sheet, went to Preferences and changed the Sheet Size from A4 to A3 but that does not m
How close are we to fabricating a germanium IC? 5 I am not actually talking here about SiGe (silicon-germanium hybrids) but an integrated circuit that uses entirely Germanium (doped of course in certain areas)? It is my understanding that even though germanium was used to make the first discrete transistors, there are many problems with using it as a substrate for IC fabrication