CMOS-inverterare Vi använder ett ”gammalt” chip – och behöver välja tillverkningsparametrarna därefter!  Kommer Du ihåg inverteraren från Digital Design.

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CMOS-inverterare Vi använder ett ”gammalt” chip – och behöver välja tillverkningsparametrarna därefter!  Kommer Du ihåg inverteraren från Digital Design kursen? William Sandqvist

MOS-Old school NMOS4 PMOS4 William Sandqvist

MOS-Old school Lägg filen cmos_model.txt i arbetsmappen. Den innehåller ”skalbara” modeller. Skriv direktivet:.include cmos_model.txt  NMOS Model Name: MN Length (L): 5u Width (W): 124u  PMOS Model Name: MP Length (L): 5u Width (W): 480u Med dessa val blir de två transistorerna jämnstarka! William Sandqvist

CMOS-inverteraren Simulera med dc-svep:.dc V ,5 V Jämnstarka transistorer ger omslag vid 2,5V. William Sandqvist

Ring-oscillator Kopiera inverteraren 5 ggr! (Vi har ett chip med 6 inverterare) + Buffer 5 inverterare i ”ring” William Sandqvist

Ring-oscillator Simulera med:.tran.2u En inverterares grindfördröjning: William Sandqvist