戴蓓倩《电子线路》-16

第四章晶体管及其小信号放大-电流源电路电子电路基础§5.1镜象电流源BE2BE1BE21VVV====bbbIIIIIIRCBCBC()===1222212b2BECCRceorrRVVI==输出电阻基本镜象电流源精密镜像电流源])1(21[1211C1C31C13Rbbbb====IIIIIIIIBECBeRRVVI=BECCR2§5.2微电流源ORTOEOREEEEETBEBETVBEVBEVEETUBEVSTVBEVSETVBEVSTVBEVSEIIVRIIIIIRIIIVVVeIIeIeIIeIeIIln,ln)1()1(221221212121222111========§5.3比例电流源e2e1Roe2E2e1E1BE2BE1e2E2BE2e1E1BE1=RRIIRIRIVVRIVRIV§5.4多路电流源333222lnlnCRTECCRTECIIVRIIIVRI==