公开(公告)号：US10072976B2

公开(公告)日：2018-09-11

申请号：US14493219

申请日：2014-09-22

Applicant: ams AG

Inventor： Gonggui Xu

IPC: G01J1/46 ,  G01J1/18 ,  H03M1/10 ,  H03M1/12 ,  G01J1/44

CPC classification number: G01J1/46 ,  G01J1/18 ,  G01J2001/444 ,  H03M1/10 ,  H03M1/12

Abstract: An optical sensor arrangement (10) comprises a light sensor (11), a current source (41), an analog-to-digital converter (12) and a switch (44) which selectively couples the light sensor (11) or the current source (41) to an input (14) of the analog-to-digital converter (12).

公开(公告)号：US10215627B2

公开(公告)日：2019-02-26

申请号：US14195801

申请日：2014-03-03

Applicant: ams AG

Inventor： Gonggui Xu ,  Lloyd Hasley ,  Cecil Aswell

IPC: G01J1/44 ,  G01J1/42 ,  H03F3/08

Abstract: A signal conditioning circuit for a light sensor, in particular for an ambient light sensor, comprises a first integration stage (INT1) connected to a first sensor input (IN1) to receive a first and second sensor signal and a second integration stage (INT2) comprising a coupling input (IN2) to receive from the first integration stage (INT1) a first and second integrated sensor signal. A coupling stage (S3, C5) is connecting the first and second integration stages (INT1, INT2) and is designed to generate a difference signal from consecutively received integrated first and second integrated sensor signals. A sensor arrangement and a method for signal conditioning for a light sensor is also presented.

公开(公告)号：US10006806B2

公开(公告)日：2018-06-26

申请号：US14067862

申请日：2013-10-30

Applicant: ams AG

Inventor： Gonggui Xu ,  Lloyd Hasley ,  Cecil Aswell ,  Mario Manninger

IPC: G01J1/44 ,  G01J1/16 ,  H01L27/144 ,  H01L31/0216 ,  G01J1/42

CPC classification number: G01J1/44 ,  G01J1/1626 ,  G01J1/4204 ,  G01J1/4228 ,  G01J2001/4247 ,  H01L27/1443 ,  H01L31/02164

Abstract: A light sensor arrangement according to the proposed principle comprises at least one first unshielded well (D0) and at least one second shielded well (D1) in a substrate (P). The at least one first unshielded well (D0) is being exposed to incident light (λ) and configured to generate a first sensor signal (Ch0) as a function of the incident light (λ). The at least one second shielded well (D1) in the substrate (p) being shielded from the incident light (λ) and configured to generate a second sensor signal (Ch1) as a function of the incident light (λ). The light sensor arrangement further comprises means for temperature compensation providing the first and second sensor signals (Ch0, Ch1) as temperature compensated sensor signals as a function of substrate temperature. Means to determine spectral content of the incident light (λ) are provided to determine the spectral content as a function of the temperature compensated first and second sensor signals (Ch0, Ch1).

公开(公告)号：US09291496B2

公开(公告)日：2016-03-22

申请号：US14849463

申请日：2015-09-09

Applicant: ams AG

Inventor： Gonggui Xu

IPC: G01N21/00 ,  G01J1/42 ,  G01K13/00

CPC classification number: G01J1/4204 ,  G01J1/44 ,  G01K13/00 ,  H04M1/22 ,  H04M2250/12

Abstract: A sensor arrangement for light sensing and temperature sensing comprises a first sensor input (1) for connecting a temperature sensor (11) and a second sensor input (2) for connecting a light sensor (21), in particular an ambient light sensor. A sensor switch (S3) electrically connects either the first or the second sensor input (1, 2) to an integration input (41) of an integrating analog-to-digital converter (4). A reference circuit (5) connects to the integration input (41) via a first switch (S2). A first reference input (42) of the integrating analog-to-digital converter (4) is to be connected with a first reference potential (Vb1). A counter (6) connects to an integration output (43) of the integrating analog-to-digital converter (4). And a controller unit (6) connects to the counter (6) and is designed to control the first switch (S2) depending on an integrated sensor signal (Vout) integrated by the integrating analog-to-digital converter (4).

公开(公告)号：US09146162B2

公开(公告)日：2015-09-29

申请号：US14231594

申请日：2014-03-31

Applicant: ams AG

Inventor： Gonggui Xu

IPC: G01N21/00 ,  G01K13/00 ,  G01J1/44 ,  H04M1/22

CPC classification number: G01J1/4204 ,  G01J1/44 ,  G01K13/00 ,  H04M1/22 ,  H04M2250/12

Abstract: A sensor arrangement for light sensing and temperature sensing comprises a first sensor input (1) for connecting a temperature sensor (11) and a second sensor input (2) for connecting a light sensor (21), in particular an ambient light sensor. A sensor switch (S3) electrically connects either the first or the second sensor input (1, 2) to an integration input (41) of an integrating analog-to-digital converter (4). A reference circuit (5) connects to the integration input (41) via a first switch (S2). A first reference input (42) of the integrating analog-to-digital converter (4) is to be connected with a first reference potential (Vb1). A counter (6) connects to an integration output (43) of the integrating analog-to-digital converter (4). And a controller unit (6) connects to the counter (6) and is designed to control the first switch (S2) depending on an integrated sensor signal (Vout) integrated by the integrating analog-to-digital converter (4).

Abstract translation: 用于光感测和温度感测的传感器装置包括用于连接温度传感器（11）的第一传感器输入（1）和用于连接光传感器（21）的第二传感器输入（2），特别是环境光传感器。 传感器开关（S3）将第一或第二传感器输入端（1,2）电连接到积分模数转换器（4）的积分输入端（41）。 参考电路（5）经由第一开关（S2）连接到积分输入（41）。 积分模数转换器（4）的第一参考输入（42）将与第一参考电位（Vb1）连接。 计数器（6）连接到积分模数转换器（4）的积分输出（43）。 并且控制器单元（6）连接到计数器（6），并且被设计成根据由积分模数转换器（4）积分的积分传感器信号（Vout）来控制第一开关（S2）。

公开(公告)号：US20150244260A1

公开(公告)日：2015-08-27

申请号：US14423100

申请日：2013-07-23

Applicant: ams AG

Inventor： Gonggui Xu

IPC: H02M3/156 ,  H05B33/08

CPC classification number: H02M3/156 ,  G05F1/561 ,  H05B33/0815

Abstract: An electric circuit of a switchable current source (10) comprises an input path (IP) comprising a first resistor (R1) and a controllable current source (CS) to provide a changeable current (Itrim) and an output current path (OP) including a controllable output driver (MN), a second resistor (R2) and an output terminal (LDR_PIN). A sensing voltage (VSENSE) is tapped at the output current path (OP) and is fed back to a regulator circuit (RC) by a feedback path (FP). The regulator circuit (RC) is connectable to the input path (IP) and the output path (OP) and provides an output signal (Vout2) to control the output current driver (MN). The switchable current source (10) enables to provide an output current (ILDR) at the output terminal (LDR_PIN) in dependence on the first and second resistor (R1, R2) and the changeable current (Itrim).

Abstract translation: 可切换电流源（10）的电路包括包括第一电阻器（R1）和可控电流源（CS）的输入路径（IP），以提供可变电流（Itrim）和输出电流路径（OP），其包括 可控输出驱动器（MN），第二电阻器（R2）和输出端子（LDR_PIN）。 感测电压（VSENSE）在输出电流路径（OP）处被抽头，并通过反馈路径（FP）反馈到调节器电路（RC）。 调节器电路（RC）可连接到输入路径（IP）和输出路径（OP），并提供输出信号（Vout2）来控制输出电流驱动器（MN）。 可切换电流源（10）使得能够根据第一和第二电阻器（R1，R2）和可变电流（Itrim）在输出端子（LDR_PIN）提供输出电流（ILDR）。

公开(公告)号：US10511321B2

公开(公告)日：2019-12-17

申请号：US16079546

申请日：2017-02-23

Applicant: ams AG

Inventor： Gonggui Xu

IPC: H03M1/68 ,  H03M1/74 ,  G05F3/16

Abstract: A digital-to-analog converter comprises a converter output (11), a dummy output (12), a first number N of current sources (13-17), a first switching arrangement (18), a first current divider (24), a second switching arrangement (31) and a second current divider (60). The current sources (13-17) are coupled via the first switching arrangement (18) to the converter output (11), the dummy output (12) or to an input current terminal (25) of the first current divider (24). The output current terminals (26-30) of the first current divider (24) are coupled via the second switching arrangement (31) to the converter output (11), the dummy output (12) or to an input current terminal (61) of the second current divider (60). The output current terminals (63-66) of the second current divider (60) are coupled to the converter output (11) or the dummy output (12).

公开(公告)号：US09559584B2

公开(公告)日：2017-01-31

申请号：US14423100

申请日：2013-07-23

Applicant: ams AG

Inventor： Gonggui Xu

IPC: G05F1/56 ,  H05B33/08 ,  G09G3/34 ,  H02M3/156

CPC classification number: H02M3/156 ,  G05F1/561 ,  H05B33/0815

Abstract: An electric circuit of a switchable current source (10) comprises an input path (IP) comprising a first resistor (R1) and a controllable current source (CS) to provide a changeable current (Itrim) and an output current path (OP) including a controllable output driver (MN), a second resistor (R2) and an output terminal (LDR_PIN). A sensing voltage (VSENSE) is tapped at the output current path (OP) and is fed back to a regulator circuit (RC) by a feedback path (FP). The regulator circuit (RC) is connectable to the input path (IP) and the output path (OP) and provides an output signal (Vout2) to control the output current driver (MN). The switchable current source (10) enables to provide an output current (ILDR) at the output terminal (LDR_PIN) in dependence on the first and second resistor (R1, R2) and the changeable current (Itrim).

Abstract translation: 可切换电流源（10）的电路包括包括第一电阻器（R1）和可控电流源（CS）的输入路径（IP），以提供可变电流（Itrim）和输出电流路径（OP），其包括 可控输出驱动器（MN），第二电阻器（R2）和输出端子（LDR_PIN）。 感测电压（VSENSE）在输出电流路径（OP）处被抽头，并通过反馈路径（FP）反馈到调节器电路（RC）。 调节器电路（RC）可连接到输入路径（IP）和输出路径（OP），并提供输出信号（Vout2）来控制输出电流驱动器（MN）。 可切换电流源（10）使得能够根据第一和第二电阻器（R1，R2）和可变电流（Itrim）在输出端子（LDR_PIN）提供输出电流（ILDR）。

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：US09041438B2

公开(公告)日：2015-05-26

申请号：US13958446

申请日：2013-08-02

Applicant: ams AG

Inventor： Gonggui Xu

IPC: H03B1/00 ,  H03K17/16 ,  H03K19/00 ,  H03K19/003 ,  H03K19/0185

CPC classification number: H03K17/161 ,  H03K19/0016 ,  H03K19/00361 ,  H03K19/018521

Abstract: An output buffer comprises a series connection of a first field effect transistor and a second field effect transistor, wherein the first field effect transistor is connected to a first supply potential terminal and the second field effect transistor is connected to a second supply potential terminal. An output terminal is connected to a common connection of the first transistor and the second transistor. The output buffer has a series connection of a resistive element and a capacitive element, wherein the capacitive element is connected to the output terminal, and a control circuit, to which an input signal is provided. The control circuit controls the transistors in such a way that turning off of a transistor is performed immediately, while turning on of a transistor is performed depending on the charging or discharging of the capacitive element, thus achieving a defined slew rate of the output signal at the output terminal.

Abstract translation: 输出缓冲器包括第一场效应晶体管和第二场效应晶体管的串联连接，其中第一场效应晶体管连接到第一电源端，第二场效应晶体管连接到第二电源端。 输出端子连接到第一晶体管和第二晶体管的公共连接。 输出缓冲器具有电阻元件和电容元件的串联连接，其中电容元件连接到输出端子以及提供输入信号的控制电路。 控制电路以这样的方式控制晶体管，使得立即执行晶体管的截止，同时根据电容元件的充电或放电来执行晶体管的导通，从而实现了输出信号的定义的转换速率 输出端子。