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E10.16 A bipolar cascode transconductance amplifier is shown in Figure E10.16. Given RS = 1 kΩ, RL = 50 kΩ, CL = 0.1 pF, ISUP = 100 μA and roc→∞, find Iout/Vs at DC and ωMBB . Assume that VBBAS is set such that all devices are operating in their constant-current region. Include Ccs = 50 fF in the calculations.

E10.16 A bipolar cascode transconductance amplifier is shown in Figure E10.16. Given RS = 1 kΩ, RL = 50 kΩ, CL = 0.1 pF, ISUP = 100 μA and roc→∞, find Iout/Vs at DC and ωMBB . Assume that VBBAS is set such that all devices are operating in their constant-current region. Include Ccs = 50 fF in the calculations.

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E10.16 A bipolar cascode transconductance amplifier is shown in Figure E10.16. Given R S = 1 k Ω , R L = 50 k Ω , C L = 0.1 p F , I S U P = 100 μ A and r o c → ∞ , find I out / V s at D C and ω MBB . Assume that V B B A S is set such that all devices are operating in their constant-current region. Include C ∘ = 50 f F in the calculations. Figure E10.16
MOS Device Data
μ n C o x = 50 μ A / V 2 , μ p C o x = 25 μ A / V 2 , V T n = − V T p = 1 V , − 2 ϕ p = 2 ϕ n = 0.8 V γ n = γ p = 0.6 V − 1 2 , λ n = λ p = 0.05 V − 1 @ L = 2 μ m , C o x = 2.3 f F / μ m 2 , C j n = 0.1 f F / μ m 2 , C j p = 0.3 f F / μ m 2 , C j s w n = 0.5 f F / μ m , C j s w p = 0.35 f F / μ m , C o v n = 0.5 f F / μ m , C o v p = 0.5 f F / μ m , L d i f f n = L diffp = 6 μ m
npn Bipolar Device Data
I S = 10 − 17 A , β F = β o = 100 , V A = 25 V , τ F = 50 p s , C j e = 15 f F @ V B E = 0.7 V , C μ = 10 f F @ V B C = − 2.0 V

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