公开(公告)号：US4992755A

公开(公告)日：1991-02-12

申请号：US467340

申请日：1990-01-19

申请人： Evert Seevinck ,  Jan Dikken ,  Hans-Jurgen Schumacher

发明人： Evert Seevinck ,  Jan Dikken ,  Hans-Jurgen Schumacher

IPC分类号： H03K5/02 ,  H03F1/32 ,  H03F3/45 ,  H03K19/003 ,  H03K19/0185

CPC分类号： H03K19/00361 ,  H03F1/3211 ,  H03F3/4565 ,  H03F3/45654 ,  H03F3/45659 ,  H03K19/018521 ,  H03F2203/45394

摘要： A transistor circuit comprising a first differential amplifier which is composed of a differential pair and a current mirror. The transistor circuit further comprises a second differential amplifier which measures a differential offset voltage in the first differential amplifier and reduces this offset voltage by means of common mode current feedback. The transistor circuit thus provides a stable amplifier having a high speed and a low offset voltage which can be used advantageously in a logic output buffer so that, for example, an ECL output buffer can be realized in CMOS.