Txoj kab nqes qis yog ib qho ntawm MOSFET tus yam ntxwv tam sim no-voltage. Nyob rau hauv cheeb tsam subthreshold, qhov ntws tam sim no tus cwj pwm - txawm tias raug tswj los ntawm lub rooj vag davhlau ya nyob twg - zoo ib yam li qhov exponentially txo tam sim no ntawm ib tug pem hauv ntej biased diode.
Dab tsi yog qhov tseem ceeb ntawm kev hloov pauv hloov pauv?
Lub viav vias subthreshold yog qhov qhov tseem ceeb hauv kev ua qauv ntawm kev tsis muaj zog inversion regime, tshwj xeeb tshaj yog rau cov ntawv thov analog tau zoo, cov duab kos duab, thiab cov ntawv siv hluav taws xob tsawg.
Lub ntsiab lus ntawm kev hloov pauv hloov pauv yog dab tsi?
Subthreshold viav vias (S) yog daim duab ntawm qhov tsim nyog uas txiav txim siab tus cwj pwm ntawm transistor hauv thaj tsam subthreshold. Kev ua tau zoo ntawm cov hlau-oxide-semiconductor-field-effect transistor (MOSFET) yog tsim los ntawm cov thermal voltage (kT/q), uas ua rau qhov theoretical yam tsawg kawg nkaus ntawm S=60mV / xyoo caum.
Dab tsi yog subthreshold swing hauv VLSI?
Lub subthreshold slope yog a feature ntawm MOSFET tus yam ntxwv tam sim no-voltage . … Ib qho kev sim me me viav vias rau qhov ntsuas MOSFET ntawm chav tsev kub yog ~ 70 mV / dec, me ntsis degraded vim luv-channel MOSFET parasitics. Ib xyoo caum (xyoo caum) sib raug rau 10 npaug ntawm qhov ntws tawm tam sim no ID.
Yuav ua li cas thiaj nrhiav tau kuv qhov kev hloov pauv hloov pauv li cas?
Cov lus qhia dav dav rau subthreshold slope (vav) yog S=(d(log10Ids)/dVgs)-1. Los yog los ntawmsaum toj no cov phiaj xwm, ntawm Vgs qis heev, coj cov txiaj ntsig ntawm qhov tseem ceeb ntawm Ids nrog kev hwm rau Vgs thiab tom qab ntawd hloov pauv tus nqi tshwm sim.
6.3 Subthreshold swing
