Problem-2 Suppose that the NMOS switch shown in Fig. 3.47(a-b) is specified with L = 0.2 um, W = 1 um, and is operated in a single-supply configura- tion (Vpp = 1.8 V, Vss = 0) with a capacitive load Cu = 100 fF. 1. (5 points) Which of the following answers is the closest estimate of the voltage perturbation AV observed at the output for a = 0.3 and V=920 mV? (a) -227 mV. (b) -85.4 mV. (c) 65.5 mV. (d) -5.92 mV. (e) -16.2 mV. (f) -42.3 mV. 2. (5 points) Which of the following answers is the closest estimate of the part of AV caused by charge injection only? (a) 914 uV. (b) 59.0 mV. (c) -9.02 mV. (d) -2.00 mV. (e) 5.94 mV. (f) -11.5 mV. ACCESS Engineering. 190 luo 122 Figure 3.47 (a) Closed NMOS switch. (b) Open NMOS switch. (c) Closed PMOS switch. (d) Open PMOS switch. vo) = Vss w Vo(t) = CA Clock feedthrough -CevVps -V) ve) - V + AV Charge injection () Channel electron charge: Qw) b) PO4) = Vss Det pe Co Clock feedthrough Corvoo - Ves) (VAV Charge injection alr - Channel hele charge Or(t) id ered to Vss in a split-supply configuration or to ground in a single-supply configuration, and therefore the into cutoff. As a result of cutoff, ferred to input and output nodes because the inversion layer can no longer be sustained. The part Problem-2 Suppose that the NMOS switch shown in Fig. 3.47(a-b) is specified with L = 0.2 um, W = 1 um, and is operated in a single-supply configura- tion (Vpp = 1.8 V, Vss = 0) with a capacitive load Cu = 100 fF. 1. (5 points) Which of the following answers is the closest estimate of the voltage perturbation AV observed at the output for a = 0.3 and V=920 mV? (a) -227 mV. (b) -85.4 mV. (c) 65.5 mV. (d) -5.92 mV. (e) -16.2 mV. (f) -42.3 mV. 2. (5 points) Which of the following answers is the closest estimate of the part of AV caused by charge injection only? (a) 914 uV. (b) 59.0 mV. (c) -9.02 mV. (d) -2.00 mV. (e) 5.94 mV. (f) -11.5 mV. ACCESS Engineering. 190 luo 122 Figure 3.47 (a) Closed NMOS switch. (b) Open NMOS switch. (c) Closed PMOS switch. (d) Open PMOS switch. vo) = Vss w Vo(t) = CA Clock feedthrough -CevVps -V) ve) - V + AV Charge injection () Channel electron charge: Qw) b) PO4) = Vss Det pe Co Clock feedthrough Corvoo - Ves) (VAV Charge injection alr - Channel hele charge Or(t) id ered to Vss in a split-supply configuration or to ground in a single-supply configuration, and therefore the into cutoff. As a result of cutoff, ferred to input and output nodes because the inversion layer can no longer be sustained. The part