Hw3_soln - Homework 3 By Yuan Zhou EECT 7329 Advanced Analog IC Design Homework 3 Yuan Zhou Step 1 Noise analysis for the 5-transistor amplifier

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Homework 3 By Yuan Zhou EECT 7329 Advanced Analog IC Design Homework 3 Yuan Zhou Step 1. Noise analysis for the 5-transistor amplifier The 5-transistor amplifier we designed for noise analysis is shown in Fig. 1. Here we use a CMFB circuit different from what we use in Homework 2. Simulation results for different cases are presented as follows. Figure 1: A 5-transistor amplifier with CMFB circuit M3 M4 M0 M1 M2 M7 M10 M14 M8 M9 V ocm ip in on op M12 M13 op M11 on (a) Output swing is 0 V and no mismatch The output noise PSD and input-referred noise PSD are shown in Fig. 2 . The contributions of individual devices in the amplifier is shown as follows. Transistor M3/M4 contribute the most noise and M8/M13 contribute the least. Device Param Noise Contribution % Of Total /I40/M3 id 9.09008e-10 27.13 /I40/M4 id 9.09008e-10 27.13 /I40/M0 id 6.8453e-10 20.43 /I40/M1 id 6.8453e-10 20.43 /I40/M7 id 3.30456e-11 0.99 /I40/M11 id 3.30456e-11 0.99 /I40/M9 id 2.36406e-11 0.71 /I40/M12 id 2.36406e-11 0.71 /I40/M13 id 2.34331e-11 0.70 /I40/M8 id 2.34331e-11 0.70 /I40/M3 rd 6.86872e-13 0.02 /I40/M4 rd 6.86872e-13 0.02 /I40/M9 rd 2.4897e-13 0.01 1
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Homework 3 By Yuan Zhou 10 4 10 6 10 8 10 10 10 12 0 0.5 1 1.5 2 2.5 3 3.5 x 10 -17 freq (Hz) PSD (V 2 /Hz) Input-referred noise Output noise Figure 2: Output and input-referred noise when V od = 0 V /I40/M12 rd 2.4897e-13 0.01 /I40/M8 rd 2.48841e-13 0.01 (b) Output swing is 1.2 V and no mismatch The output swing is set to be around 1.2 V by setting input voltage 1.2 V. The output noise PSD and input-referred noise PSD are shown in Fig. 3. The contributions of individual devices in the amplifier is shown as follows. Transistor M3 contributes the most noise and
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This note was uploaded on 03/19/2012 for the course EE 7329 at University of Texas at Dallas, Richardson.

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Hw3_soln - Homework 3 By Yuan Zhou EECT 7329 Advanced Analog IC Design Homework 3 Yuan Zhou Step 1 Noise analysis for the 5-transistor amplifier

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