last updated 2002-4-12
Assignment #6 - not marked
CMOS35 Parameters
Parameter (Description) Value
VDD 3.3V
µn 4.8x1010µm2/V/s
µp 1.6x1010µm2/V/s
Lmin 0.35µm
Wmin 0.4µm
Lateral Diffusion NMOS ((delta L)/2 or xd) 51nm
Lateral Diffusion PMOS ((delta L)/2 or xd) 7nm
X or LD,S 0.85µm
Cox 4.7x10-3pF/µm2
VTN 0.60V
VTP -0.80V
eta 6
GAMMAn 0.621
GAMMAp 0.452
LAMBDAn 0.12/L(µm)
LAMBDAp 0.10/L(µm)
Cj-n at 0V bias 1.003x10-3F/m2
Cj-p at 0V bias 1.431x10-3F/m2
Cjsw-n at 0V bias 3.008x10-10F/m
Cjsw-p at 0V bias 4.076x10-10F/m
Cg(s,d)overlap-n 1.90x10-10F/m
Cg(s,d)overlap-p 2.76x10-10F/m

 

1.
A 5-inverter CMOS ring oscillator is built with 10micron/0.35micron transistors.  The source and drain widths (x) are 1 micron.
Estimate the frequency.
What is the power consumption.

2.
A hypothetical set of domino gates have Tprop0-1 = 100ps (from all inputs) and Tprop1-0 = 210ps.  Ideal 4-phase clocking is used.  Find the maximum clock frequency for cascaded gates using the following gate orders.  Assume the input data is available before the first evaluation clock.

c1 c2 c3 c4 c1
c1 c1 c2 c2 c3 c3 c4 c4 c1 c1
c1 c2 c2 c3 c4 c4 c1
c1 c2 c2 c2 c3 c3 c4

3.
Draw schematics and stick diagrams for the following circuits:
static CMOS 3-input OR
domino 2-input AND gate
domino DCVS logic  2-input XOR