公开(公告)号：US11742803B2

公开(公告)日：2023-08-29

申请号：US17310333

申请日：2020-01-21

Applicant: ams AG

Inventor： Carlo Fiocchi ,  Andreas Fitzi ,  Andras Mozsary

IPC: H03F1/32 ,  H03F3/45

CPC classification number: H03F1/3211 ,  H03F3/45269 ,  H03F2200/294

Abstract: An amplifier circuit includes a circuit path of serially connected complementary type transistors. First and second feedback loops include a loop amplifier, the transistors of the circuit path and a corresponding resistor.

公开(公告)号：US09739659B2

公开(公告)日：2017-08-22

申请号：US14515376

申请日：2014-10-15

Applicant: ams AG

Inventor： Gonggui Xu ,  Andreas Fitzi

IPC: H01J40/14 ,  G01J1/42 ,  G01J1/46 ,  G01J1/44

CPC classification number: G01J1/4204 ,  G01J1/44 ,  G01J1/46 ,  G01J2001/446 ,  H03K17/941

Abstract: An optical sensor arrangement (10) comprises a photodiode (11) for providing a sensor current (IPD) and an analog-to-digital converter arrangement (12) which is coupled to the photodiode (11) and determines a digital value of the sensor current (IPD) in a charge balancing operation in a first phase (A) and in another conversion operation in a second phase (B).

公开(公告)号：US09768798B2

公开(公告)日：2017-09-19

申请号：US15121753

申请日：2015-02-13

Applicant: ams AG

Inventor： Thomas Christen ,  Thomas Froehlich ,  Andreas Fitzi ,  Dusan Prelog

IPC: H03M3/00

CPC classification number: H03M3/422 ,  H03M3/328 ,  H03M3/334 ,  H03M3/424 ,  H03M3/43 ,  H03M3/436 ,  H03M3/438 ,  H03M3/464

Abstract: A delta-sigma modulator (10) comprises a modulator loop (11) and a code generator (12). The modulator loop (11) comprises a loop filter (18). The code generator (12) is configured to generate a generator signal (BS) that is realized as an extended Barker code. The code generator (12) comprises a generator output (23) that is coupled to the loop filter (18).

公开(公告)号：US09966912B2

公开(公告)日：2018-05-08

申请号：US15521281

申请日：2015-08-20

Applicant: ams AG

Inventor： José Manuel García González ,  Andreas Fitzi

IPC: H03F3/45 ,  H03F1/22 ,  H03F3/30

CPC classification number: H03F3/45215 ,  H03F1/14 ,  H03F1/223 ,  H03F3/3022 ,  H03F3/45071 ,  H03F3/45179 ,  H03F3/45183 ,  H03F3/45192 ,  H03F3/45475 ,  H03F2200/411 ,  H03F2200/456 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45318

Abstract: An amplifier circuit with a differential input and a differential output comprises a first and a second pair of matched transistors having a first threshold voltage and comprising control terminals connected to the differential input. A first and a second pair of triplets of transistors having a second threshold voltage being different from the first threshold voltage is connected to each one of the pairs of matched transistors such that respective current paths are formed with these transistors. The currents are split up to bias current sources and to an output stage such that the current is reused for implementing a class AB operation. Furthermore, a current through bias transistors connected in the current path of the first and the second pair of matched transistors is mirrored to output transistors being arranged in a differential current path of the output stage.

公开(公告)号：US09813026B2

公开(公告)日：2017-11-07

申请号：US15100278

申请日：2014-09-25

Applicant: ams AG

Inventor： Andreas Fitzi

IPC: H03F3/45 ,  H03F1/26 ,  H03F3/21

CPC classification number: H03F1/26 ,  H03F3/21 ,  H03F3/45183 ,  H03F3/45237 ,  H03F3/45273 ,  H03F2203/45352 ,  H03F2203/45366

Abstract: An amplifier arrangement is presented, comprising a first differential stage (DS1) comprising at least two transistors (M1, M1′) having a first threshold voltage (Vth1), at least a second differential stage (DS2) comprising at least two transistors (M3, M3′) having a second threshold voltage different from the first threshold voltage, at least one of the transistors of the first and second differential stage (DS1, DS2), respectively, has a control input commonly coupled to an input of the amplifier arrangement, at least one transistor (M1) of the first differential stage and one transistor (M3) of the second differential stage are arranged in a common current path, which is coupled to an output of the amplifier arrangement.