casual
Junior Member level 2
For a nmos CML logic eg: typical CML latch, should I pick up npoly or ppoly as a resistor loads? The voltage swing is from Vdd to Vdd-swing, Does it have any difference to use npoly or ppoly if Rsheet is about the same
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In most processes, npoly and ppoly have different TCs, s. your PDK docu.casual said:... should I pick up npoly or ppoly as a resistor loads? Does it have any difference to use npoly or ppoly if Rsheet is about the same
I don't, sorry! Resistor poly sits on TOX, so there's no junction and hence no reverse bias capacitance, just the fixed TOX cap.casual said:It must have difference in term of reverse biased capacitance. I think npoly is better if the swing is near to vdd since the reverse biased voltage is larger, thus smaller capacitance. Does anyone agree??