1. Using the values of Tables 3.1-1 and 3.2-1, calculate the values of CGB, CGS, and CGD for an MOS device that has a W

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1. Using the values of Tables 3.1-1 and 3.2-1, calculate the
values of CGB, CGS, and CGD for an MOS device that has a W of 6μm
and an L of 1μm for all three regions of operation.

1 Using The Values Of Tables 3 1 1 And 3 2 1 Calculate The Values Of Cgb Cgs And Cgd For An Mos Device That Has A W 1 (47.92 KiB) Viewed 36 times

2. Calculate the transfer function vout(s)/vin(s) for the
circuit shown in Fig. P3.3-1. The W/L of M1 is 2μm/0.8μm and the
W/L of M2 is 4μm/4μm. Note that this is a small signal analysis,
and the input voltage has a dc value of 2 V.

1 Using The Values Of Tables 3 1 1 And 3 2 1 Calculate The Values Of Cgb Cgs And Cgd For An Mos Device That Has A W 2 (13.58 KiB) Viewed 36 times

3. Calculate the value for VON for an NMOS transistor in
weak inversion assuming that fs and fn can be approximated to be
unity (1.0).
4. Consider the circuit illustrated in Fig. P3.6-1.
a. Write a SPICE netlist that
describes this circuit.
b. Repeat part (a) with M2 being 4
μm/1 μm and M3 and M2 are ratio matched, 1:3.

1 Using The Values Of Tables 3 1 1 And 3 2 1 Calculate The Values Of Cgb Cgs And Cgd For An Mos Device That Has A W 3 (29.26 KiB) Viewed 36 times

5. Consider the circuit shown in
Fig. P4.1-7. Assume that the slow regime of charge injection is
valid for this circuit. Initially, the charge on C1 is zero.
Calculate vout at time t1 after φ1 pulse occurs. Assume that CGSO
and CGDO are both 5 fF. C1 = 30 fF. You cannot ignore body effect.
L = 1.0 mm and W = 5.0 mm. Use the model parameters from Tables
3.1-2 and 3.2-1 as required.

1 Using The Values Of Tables 3 1 1 And 3 2 1 Calculate The Values Of Cgb Cgs And Cgd For An Mos Device That Has A W 4 (16.14 KiB) Viewed 36 times

Table 3.1-1 Constants for Silicon Constant Symbol Constant Description Value Units VO Silicon bandgap (27) Boltzmann's constant Intrinsic carrier concentration (27 °C) Permittivity of free space Permittivity of silicon Permittivity of SiO. 1.205 1.381 x 10- 1.45 x 10 8.854 x 10-14 V J/K cm Flem Flem Flem B 11.7 Table 3.2-1 Capacitance Values and Coefficients for the MOS Model Units Type p-Channel n-Channel CGSO 220 X 10-12 220 x 10-12 CGDO 220 x 102 220 x 10-12 CGBO 700 X 10-12 700 x 10-12 C 560 X 10+ 770 x 10 CISW 350 x 10-12 380 X 10-12 0.5 MJSW 0.35 0.38 Based on an oxide thickness of 140 A or C = 24.7 x 10-F/m. F F/m Fim F/m Fim? F/m MJ 0.5

5 V W/L = 2/0.8 MI W/L = 4/4 M2 VIN out in = 2V + 1 mV Figure P3.3-1

Vpp = 5 V W/L = 1 um/1 um W/L = 1 um/l um M3 M2 VOUT VIN R = 50 k12 W/L = 1 um/l um MI Figure P3.6-1

5 V OV 10 ns 10 ns MI 2.0 코, Figure P4.1-7