公开(公告)号：US20170288615A1

公开(公告)日：2017-10-05

申请号：US15085889

申请日：2016-03-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Kevin FRONCZAK ,  Murat OZBAS ,  Yonggang CHEN

IPC: H03F1/30 ,  H03F3/45

CPC classification number: H03F1/30 ,  H03F3/45071 ,  H03F3/45475 ,  H03F3/45982 ,  H03F2200/375 ,  H03F2200/447 ,  H03F2203/45048 ,  H03F2203/45286 ,  H03F2203/45288 ,  H03F2203/45594 ,  H03F2203/45604

Abstract: An apparatus, system, and method are disclosed for compensating input offset of an amplifier having first and second amplifier output nodes. The method comprises generating a proportional-to-absolute temperature (PTAT) current, generating a complementary-to-absolute temperature (CTAT) current, and selecting, based on the input offset, one of the first and second amplifier output nodes into which a compensation current is to be coupled. The compensation current is based on a selected one of the PTAT current and CTAT current.

公开(公告)号：US20160349786A1

公开(公告)日：2016-12-01

申请号：US14788529

申请日：2015-06-30

Applicant: SYNAPTICS INCORPORATED

Inventor： Kevin FRONCZAK ,  Eric BOHANNON

IPC: G05F3/26

CPC classification number: G05F3/267

Abstract: In a current-mode bandgap reference integrated circuit: a bandgap voltage generator is configured to generate a bandgap voltage, a zero-temperature coefficient current generator configured to generate a zero-temperature coefficient current, and a proportional to absolute temperature current generator configured to generate a proportional to absolute temperature current. The integrated circuit includes a first pair of bipolar junction transistors (BJT) comprising a first BJT and a second BJT. The integrated circuit also includes a second pair of bipolar junction transistors, comprising a third BJT and a fourth BJT. The first pair of BJTs matches the second pair of BJTs.

Abstract translation: 在电流模式带隙基准集成电路中：带隙电压发生器被配置为产生带隙电压，被配置为产生零温度系数电流的零温度系数电流发生器以及与绝对温度电流发生器成比例的， 与绝对温度电流成正比。 集成电路包括包括第一BJT和第二BJT的第一对双极结型晶体管（BJT）。 集成电路还包括第二对双极结型晶体管，包括第三BJT和第四BJT。 第一对BJT与第二对BJT匹配。