2006 ( ) 1 (CCD) 2 Swithed--Capaitor Ciruits(SC) 3 Swithed--Current Ciruits(SI) ( ) CCD IIR 1972 1977 NMOS 1978 INTEL PCM MOS - 1 -
2.1 2.1.1 2.1.1 q ( t) = C v ( t) ( n 1)T φ S1 S2 v t) = v [( n 1) T ] ( t= ( n 1) T 1 ( n 1)T <t< ( n 1/ 2)T S1 S2 v ( t) = v ( t) t n 1) T = v1[( n 1) T = ( ( n 1/ 2)T φ S1 S2 v ( t) t ( n 1/ 2) T = v2[( n 1/ 2) T ] = ( n 1/ 2)T <t< nt S1 S2 v ( t) = v ( t) t ( n 1/ 2) T = v1[( n 1/ 2) T ] ( n 1)T <t< nt = ] q = q [( n 1) T ] q [( n 1/ 2)] T q = C{ v [( n 1) T ] v2[( n 1/ 2) T ]} 1 v ( ) v ( t) 2 1 t ω T << 1 q = T i (t) T R = C q C i ( t) = = [ v1 ( t) v2 ( t)] T T - 2 -
2.1.2 a (b) () vφ φ v φ φ (d) (e) T - 3 -
2.l.3 1) 2) - 4 -
2.1.2 2.1.4 S1 S2 MOS + C1=R MOS T R = C C 1-5 -
2.2 2.2.1 2.2.1 T R = C 1 τ = RC T 2 = C2 C1 C C 2 1 T 2 C T C 1-6 -
2.2.2-7 -
2.2.2 2.2.3 2.2.3 v O (t) v I ( ) ( ) 1 t v t I 2 1 S2 S3 φ S1 S4 φ 1 vo ( t) = [ vi1( t) vi 2 ( t)] CP 2 + C 1 2 S1 S3 φ S2 S4 φ 1 vo ( t) = [ vi1( t) + vi 2 ( t)] CP 2 + C 1-8 -
2.2.3 f f / 2 f = 1/ T 2.2.4 2.2.5 2.2.5 2.2.4 RC RC f f / 2 f 0~ f f /2 f 1 f f / 2 2 RC T ω << 1-9 -
2.3 1. 2.3.1-10 -
2. 2.3.2-11 -
2.3.1 2.3.3 2.3.4-12 -
2.3.2 t = nt v nt ) = v ( nt O ( 3 ) nt t < nt +τ 1 v t) = v ( nt O ( 3 t = nt +τ 1 ) 2.3.5-13 -
2.3.3 2.3.6-14 -
2.4 2.4.1 1/s s 2.4.2-15 -
2.5 2.5.1 2.5.1 2.5.2 2.5.3 C Vo ( jω) = C V ( j ) 1 i ω 2-16 -
2.5.2 2.5.4 2.5.5 1 C1 Vo ( jω) = [ Vi 1( jω) Vi2 ( jω)] jωc T 2-17 -
2.5.3 256 1 C1 C3 Vo ( jω) = Vi 1( jω) Vi2 ( jω) jωc T C 2 2-18 -
2.5.4 257 258 v 2-19 -
2.6 2.6.1 2 0 0 2 0 1 2 2 ) ( ω ω + + + + = s Q s K s K s K s H + + + = ) ( ) ( ) ( ) ( 1 ) ( 1 0 1 2 s V s V Q s V K s K s s V o i o ω ω + = ) ( ) ( 1 ) ( 0 0 0 0 1 s V s V K s s V i ω ω 2.6.1 -- 1 K Q 0 ω 0 ω 0 0 ω K K 2 2.6.2 -- - 20 -
2.6.3 RC 2.6.4 2.6.5-21 -
2.6.2 2.6.6 RLC VO ( s) H ( s) = V ( s) i = s 2 1 LC RC + s + L 1 LC 2.6.6 2.6.8 ' V i ( s) - 22 -
2.6.9-23 -
2.6.3-24 -
2.7 2.7.1 2.7.2 2.7.3 2.7.4-25 -
2.8 2.8.1 2.8.1 2912 2.8.2-26 -
2.8.2 50Hz 2.8.3 50Hz 2.8.4 50Hz - 27 -
2.8.3 2.8.10 2.8.11-28 -
- 29-0601111
2.8.4 2.8.12-30 -