Analysis and Design of Analog Integrated Circuits UQSTC 3.Depletion-Region Capacitance Depletion region 8888 p-type n-type C= dodo dw semicon- ⊙⊙ semicon- ductor ductor dvr dw dvR D e 0+VD- do AgNadW -W 0 W2 Where,A is the cross-sectional area of the junction /2 E dVR 2o+岩+同 0 Yo YD qeNaND C-4 72 2WM+No]Vo+ Reverse bias:vp =-VR 2019/9/3 UESTC Luo Ping 14Analysis and Design of Analog Integrated Circuits 2019/9/3 UESTC Luo Ping 14    A D R A D j R D A A R A R R j N N Ψ V q N N C A Ψ V N N qN dV dW A dQ AqN dW dV dW dW dQ dV dQ C                                   0 1 2 1 2 0 1 1 1 1 1 2 2 1 Where, is the cross sectional area of the junction   3. Depletion-Region Capacitance Reverse bias : D R v V  