FETs as storage caps in 0edg.uchicago.edu/~bogdan/PSEC5/FETs_as_storage_caps_130nm.pdfFETs as...
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FETs as storage caps in 0.13 Simple test: 1Kohm in series with NFET using gate capacitance. Simulate RC rise time for various NFET sizes and infer effective capacitance. (for simplicity: square transistor => L=W ; Area = L*L)
Transcript of FETs as storage caps in 0edg.uchicago.edu/~bogdan/PSEC5/FETs_as_storage_caps_130nm.pdfFETs as...
FETs as storage caps in 0.13
Simple test: 1Kohm in series with NFET using gate capacitance. Simulate RC rise time for various NFET sizes and infer effective capacitance. (for simplicity: square transistor => L=W ; Area = L*L)
L (um)
A (um*um)
10% time (ns)
90% time (ns)
Time10-90(ns)
Ceff(fF)
2 4 12.51 12.6 0.09 40.91
3 9 12.51 12.8 0.29 131.82
4 16 12.52 13 0.48 218.18
5 25 12.54 13.4 0.86 390.91
6 36 12.55 13.6 1.05 477.27
7 49 12.56 14 1.44 654.55
8 64 12.57 14.5 1.93 877.27
C_eff = 10%-90%_risetime/ (2.2*1Kohm)
