Generated by Foxit PDF Creator Foxit Software oftware.comForevaluationonly 传输延迟时间:阶跃输入 t=0 输入信号变化到输出信号变化50%的时间 1+2-2a P 2 P 取:t1=t1(1=0)+12(2=0.5) TP 4(VDD-V H K p DD DD TP DD ln(3-4a) (1-ap)22(1-ap)11 传输延迟时间:阶跃输入 )]43ln( )1(2 1 )1([ )]1 )(4 ln( 2 1 [ )( 2 P PP P r DD TPDD TPDD TP TPDDp L pLH V VV VV V VVK C t 输入信号变化到输出信号变化50%的时间 2 P 1 Pr 1 1 u t 2 P2 P r 2 1 21 ln 12 u u t )5.0()0( 取: ututt 2211r VDD CL t = 0 Vin Generated by Foxit PDF Creator © Foxit Software http://www.foxitsoftware.com For evaluation only