公开(公告)号：US20180098696A1

公开(公告)日：2018-04-12

申请号：US15840517

申请日：2017-12-13

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： David T. BLAAUW ,  Zhiyoong FOO ,  Gyouho KIM ,  Qing DONG ,  Dennis SYLVESTER

IPC: A61B3/16 ,  G05F3/26 ,  A61B3/00

CPC classification number: A61B3/16 ,  A61B3/0016 ,  A61B2560/0209 ,  A61B2560/0219 ,  A61B2560/045 ,  A61B2562/0247 ,  A61B2562/028 ,  A61B2562/164 ,  A61B2562/166 ,  G05F3/262

Abstract: An intraocular pressure sensor is presented that achieve very low power consumption. The intraocular pressure sensor takes the form of an implantable assembly configured to be implanted in an eye of a subject. Specifically, the implantable assembly is comprised of a capsular tension ring attached to a flexible printed circuit board. The flexible printed circuit board includes a cutout that is sized to encircle the pupil of the eye and is C shaped. One or more electrical components are also mounted onto the flexible printed circuit board. One such component is a voltage reference generator that is implemented by a circuit which provides inherently low process variation and low power consumption.

公开(公告)号：US20170357285A1

公开(公告)日：2017-12-14

申请号：US15622202

申请日：2017-06-14

Applicant: THE REGENTS OF THE UNIVERSITY OF MICHIGAN

Inventor： Qing DONG ,  David T. BLAAUW ,  Dennis SYLVESTER

IPC: G05F3/26

CPC classification number: G05F3/262

Abstract: A sub-nW voltage reference is presented that provides inherently low process variation and enables trim-free operation for low-dropout regulators and other applications in nW microsystems. Sixty chips from three different wafers in 180 nm CMOS are measured, showing an untrimmed within-wafer σ/μ of 0.26% and wafer-to-wafer σ/μ of 1.9%. Measurement results also show a temperature coefficient of 48-124 ppm/° C. from −40° C. to 85° C. Outputting a 0.986V reference voltage, the reference operates down to 1.2V and consumes 114 pW at 25° C.