公开(公告)号：IT8922474D0

公开(公告)日：1989-11-22

申请号：IT2247489

申请日：1989-11-22

Applicant: SGS THOMSON MICROELECTRONICS

Inventor： GOLA ALBERTO ,  ALZATI ANGELO ,  NOVELLI ALDO

IPC: H03F3/45 ,  H03K5/24 ,  H03K5/08 ,  H03F

Abstract: An electronic comparator circuit (1), of a type which comprises a first, differential stage (2) input circuit portion provided with a differential pair of bipolar transistors (T2,T3) forming respective outputs of thee input portion (2), is further provided with an output stage (3) comprising a first pair of MOS transistors (M1,M2), with gate electrodes (G1,G2) in common, respectively connected on the one side to said outputs (C2,C3) and on the other side to a positive supply pole (Vc) via a current mirror circuit, and a second pair of MOS transistors (M5,M6), with gate electrodes (G5,G6) in common, connected between said outputs (C2,C3) and ground. A drain electrode (D2) of the first pair of MOS transistors (M1,M2) forms an output (OUT) for the comparator (1), the latter having shown itself to be specially fast during the switch phase and combining the advantages of bipolar technology circuits and of those in the CMOS technology.