公开(公告)号：US20190317541A1

公开(公告)日：2019-10-17

申请号：US15951894

申请日：2018-04-12

Applicant: Analog Devices Global Unlimited Company

Inventor： Hanqing Wang ,  Gerard Mora-Puchalt

IPC: G05F3/16 ,  H03K17/687 ,  H03F3/45 ,  H03F3/00

Abstract: A common mode reference circuit comprises a divider stage and an output stage. The divider stage includes a first n-channel field effect transistor and p-channel filed effect transistor (NFET/PFET) pair connected in series to a high supply voltage circuit node; and a second NFET/PFET pair connected in series to a low supply voltage circuit node. The output stage includes a first FET connected as a current mirror to a transistor of the first NFET/PFET pair; a second FET connected as a current mirror to a transistor of the second NFET/PFET pair; and a common mode reference output at a series connection from the first FET to the second FET.