Differential output stage of an amplification device, for driving a load
    1.
    发明公开
    Differential output stage of an amplification device, for driving a load 有权
    差异最大限度的最后一个版本Verstärkungsvorrichtungund Antreiben einer

    公开(公告)号:EP2757684A1

    公开(公告)日:2014-07-23

    申请号:EP13152211.2

    申请日:2013-01-22

    申请人: ST-Ericsson SA

    摘要: Full-bridge amplifier output stage (200) with (each side of bridge) two transistors (M1PSW, M2PSW) connected to the amplifier output (O1) and driven by the same terminal (DT1) of a bias circuit (210), one of which connected to a supply (VDD), the other one to another terminal (N1) of the bias circuit; and other two transistors (M1NSW, M2NSW) connected to the amplifier output and driven by the same terminal (DT2) of a second bias circuit (220), one of which connected to a second supply (GND), the other one to another terminal (N4) of the second bias circuit.
    For switching amplifier; to control the gate voltage of the output FETs in the ON-state, to maintain a controlled or constant rDS(on) of the FETs.

    摘要翻译: 全桥放大器输出级(200)与(桥的每一侧)两个晶体管(M1PSW,M2PSW)连接到放大器输出(O1)并由偏置电路(210)的相同端子(DT1)驱动, 其连接到电源(VDD),偏置电路的另一个端子(N1); 和连接到放大器输出并由第二偏置电路(220)的相同端子(DT2)驱动的其它两个晶体管(M1NSW,M2NSW),其中一个连接到第二电源(GND),另一个连接到另一个端子 (N4)。 用于开关放大器; 以控制导通状态的输出FET的栅极电压,以维持FET的受控或恒定的rDS(on)。

    Interface circuit for connecting a microphone circuit to a preamplifier
    3.
    发明公开
    Interface circuit for connecting a microphone circuit to a preamplifier 审中-公开
    Schnittstellenschaltung zur Verbindung einer Mikrofonschaltung an einenVorverstärker

    公开(公告)号:EP2453574A1

    公开(公告)日:2012-05-16

    申请号:EP10191206.1

    申请日:2010-11-15

    申请人: ST-Ericsson SA

    IPC分类号: H03H11/46 H03H5/12

    CPC分类号: H04R3/00 H03H5/12 H03H11/46

    摘要: An interface circuit (INT C ) is disclosed, adapted to connect a microphone circuit (MC D ) to a preamplifier (P A ), the microphone circuit (MC D ) comprising a microphone (3) and at least an output node (M O , M O ') and the preamplifier (P A ) comprising at least an input node (10, 10') adapted to be connected to said output node (M O , M O ') through said interface circuit (INT C ).
    The interface circuit (INT C ) comprises at least a decoupling capacitor (C DEC ) for DC decoupling said input node (10, 10') from said output node (M O , M O '), the decoupling capacitor (C DEC ) having a first end connected/connectable to said input node (10, 10') and a second end connected/connectable to said output node (M O , M O ').
    The interface circuit (INT C ) comprises at least one active circuit (UG AMP , UG AMP ') connected to the first end of the decoupling capacitor (C DEC ), adapted to operatively act as a resistance multiplier and having an equivalent resistance that together with the decoupling capacitor (C DEC ) defines a high-pass filter operatively connected / connectable between the microphone (3) and the preamplifier (P A ) .

    摘要翻译: 公开了一种接口电路(INT C),其适于将麦克风电路(MC D)连接到前置放大器(PA),麦克风电路(MC D)包括麦克风(3)和至少一个输出节点(MO,MO '),并且所述前置放大器(PA)至少包括通过所述接口电路(INT C)连接到所述输出节点(MO,MO')的输入节点(10,10')。 接口电路(INT C)至少包括用于使所述输入节点(10,10')与所述输出节点(MO,MO')进行DC去耦的去耦电容器(C DEC),所述去耦电容器(C DEC)具有第一 端部连接/可连接到所述输入节点(10,10'),以及连接/可连接到所述输出节点(MO,MO')的第二端。 接口电路(INT C)包括连接到去耦电容器(C DEC)的第一端的至少一个有源电路(UG AMP,UG AMP'),适用于可操作地用作电阻乘法器并且具有一起的等效电阻 去耦电容器(C DEC)限定了在麦克风(3)和前置放大器(PA)之间可操作地连接/连接的高通滤波器。

    Single-ended to differential buffer circuit and method for coupling at least a single-ended input analog signal to a receiving circuit with differential inputs
    4.
    发明公开
    Single-ended to differential buffer circuit and method for coupling at least a single-ended input analog signal to a receiving circuit with differential inputs 有权
    缓冲电路与施加到单个输入模拟信号到接收电路具有差动输入的单个输入,差分输出和方法,用于至少一个电压的耦合,

    公开(公告)号:EP2437268A1

    公开(公告)日:2012-04-04

    申请号:EP10183195.6

    申请日:2010-09-30

    申请人: ST-Ericsson SA

    摘要: A single-ended to differential buffer circuit is (21,22) is disclosed, adapted to couple at least an input analog signal (Vin) to a receiving circuit (24).
    The buffer circuit (21,22) comprises an output section (22) comprising a differential amplifier (25) having a first (31) and a second (32) input, a first (41) and a second (42) output.
    The buffer circuit further comprises an input section (21) comprising a first (CS1) and a second (CS2) switched capacitor, each adapted to sample said input analog signal (Vin) and having a first side (p1',p2') and a second side (p1", p2"), the first sides (p1', p2') of the first and second switched capacitors being controllably connectable / disconnectable to/from said first (41) and second (42) outputs respectively.
    In the buffer circuit the second sides (p1",p2") of said first (CS1) and second (CS2) switched capacitors are controllably connectable/disconnectable to/from said first (31) and second (32) inputs of the differential amplifier (25) respectively.
    Moreover, in the buffer circuit the second sides (p1", p2") of the first and second switched capacitors (CS1,CS2) are controllably connectable/disconnectable to/from said second output (42) and said first output (41) respectively.
    A method (100) for coupling at least a single-ended input analog signal (V in ) to a receiving circuit (24) with differential inputs is also disclosed.

    摘要翻译: 单端到差分缓冲电路是(21,22)是圆盘游离缺失,适于耦接至少输入模拟信号(Vin)到接收电路(24)。 缓冲电路(21,22)包括到输出部分(22)包括具有第一(31)的差分放大器(25)和第二(32)输入端,第一(41)和第二(42)输出。 包括第一(CS1)和第二(CS2)的缓冲电路的输入部分的步骤还包括(21)的开关电容器,每个angepasst采样所述输入模拟信号(Vin)和具有第一侧(P1”,P2' )和 的第二侧上的第一和第二组(P1“P2”),所述第一侧部(P1”,P2' )开关电容器是可控地可连接/可分离的向/从所述第一(41)和第二(42)分别输出。 在缓冲电路的第二侧所述第一(CS1)和第二(CS2)的(P1“P2”)开关电容器是可控地可连接的/可断开的从所述第一(31)和所述差分放大器的第二(32)输入到/ (25)分别。 更完了,在缓冲电路中的第二侧上的第一和第二组(P1“P2”)开关电容器(CS1,CS2)是可控地可连接/可分离的向/从所述第二输出(42)和分别在第一输出(41)所述 , 一种用于将至少一个单端输入模拟信号的方法(100)(以V)至游离缺失的接收电路(24)与差分输入gibt光盘。

    Analog-to-digital conversion device
    6.
    发明公开
    Analog-to-digital conversion device 审中-公开
    模拟数字-Wandlersystem

    公开(公告)号:EP2690788A1

    公开(公告)日:2014-01-29

    申请号:EP12178324.5

    申请日:2012-07-27

    申请人: ST-Ericsson SA

    IPC分类号: H03M1/12

    CPC分类号: H03M1/12 H02J7/00 H03M1/129

    摘要: The present disclosure relates to an electronic analog-to-digital conversion device (100) which comprises:
    - an analog-to-digital conversion block (101) having a first input (1) for receiving a voltage signal (Vout) to be converted on the basis of a reference voltage signal (V REF ) provided to a second input (2) of the same analog-to-digital conversion block (101);
    - an input block (102) having an input terminal (3) and an output terminal (4) connected to the first input (1) of the analog-to-digital conversion block (101).
    The input block (102) is arranged for processing an input voltage signal (Vin) applied to the input terminal (3) to generate the voltage signal (Vout) at the output terminal (4). The input block (102) comprises:
    - a first resistive network (103) operatively connected to both the input terminal (3) and the output terminal (4);
    - a second resistive network (104) connected between the output terminal (4) and a reference potential (GND).
    The input block (102) is characterized by comprising an active network (105) connected between an output node (5) of the first resistive network (103) and the output terminal (4). The active network (105) has a first input terminal (6) directly connected to the second input (2) of the analog-to-digital conversion block (101) for receiving the same reference voltage signal (V REF ) provided to the second input (2) so that the input voltage signal (Vin) is processed by the input block (102) on the basis of such reference voltage signal (V REF ).

    摘要翻译: 本公开涉及一种电子模数转换装置(100),其包括: - 模数转换块(101),具有用于接收要转换的电压信号(Vout)的第一输入(1) 基于提供给同一模数转换块(101)的第二输入(2)的参考电压信号(V REF); - 具有连接到模数转换块(101)的第一输入(1)的输入端(3)和输出端(4)的输入块(102)。 输入块(102)被布置用于处理施加到输入端子(3)的输入电压信号(Vin),以在输出端子(4)产生电压信号(Vout)。 输入块(102)包括: - 可操作地连接到输入端(3)和输出端(4)的第一电阻网络(103)。 - 连接在输出端(4)和参考电位(GND)之间的第二电阻网络(104)。 输入块(102)的特征在于包括连接在第一电阻网络(103)的输出节点(5)和输出端(4)之间的有源网络(105)。 有源网络(105)具有直接连接到模拟 - 数字转换块(101)的第二输入(2)的第一输入端(6),用于接收与第二输入端相连的第二输入端 输入(2),使得输入电压信号(Vin)由输入块(102)基于这样的参考电压信号(V REF)来处理。

    Two-stage operational amplifier in class ab
    7.
    发明公开
    Two-stage operational amplifier in class ab 审中-公开
    ZweistufigerOperationsverstärkerim AB-Betrieb

    公开(公告)号:EP2667506A1

    公开(公告)日:2013-11-27

    申请号:EP12169324.6

    申请日:2012-05-24

    申请人: ST-Ericsson SA

    IPC分类号: H03F1/02 H03F3/30 H03F3/45

    摘要: The invention relates to a two-stage operational amplifier (400) in class AB for driving a load (R LB , R LA ) comprising:
    - an input stage (401) comprising differential input terminals (I N , I P ) and a first differential output terminal (O1P) and a second differential output terminal (O1N);
    - an output stage (402) comprising a first output branch (403) and a second output branch (404);
    - a control circuit (405) comprising a first PMOS transistor (M BP2B ) connected in a current mirror configuration to a second PMOS transistor (M L2B ) of the first output branch (403), a first NMOS transistor (M BNB ) connected in series with the first PMOS transistor (M BP2B ), a third PMOS transistor (M BP2A ) connected in a current mirror configuration to a fourth PMOS transistor (M L2A ) of the second output branch (404), a second NMOS transistor (M BNA ) connected in series with the third PMOS transistor (M BP2A ).

    摘要翻译: 本发明涉及用于驱动负载(R LB,R LA)的AB类中的两级运算放大器(400),包括:输入级(401),包括差分输入端(IN,IP)和第一差分输出 端子(O1P)和第二差分输出端子(O1N); - 包括第一输出分支(403)和第二输出分支(404)的输出级(402); - 控制电路(405),包括以电流镜配置连接到第一输出分支(403)的第二PMOS晶体管(M L2B)的第一PMOS晶体管(M BP2B),连接到第一NMOS晶体管 与第一PMOS晶体管(M BP2B)串联,以电流镜配置连接到第二输出分支(404)的第四PMOS晶体管(M L2A)的第三PMOS晶体管(M BP2A),第二NMOS晶体管(M BNA )与第三PMOS晶体管(M BP2A)串联连接。

    Low-noise reference voltages distribution circuit
    8.
    发明公开
    Low-noise reference voltages distribution circuit 审中-公开
    。。。。。。。。。。。。

    公开(公告)号:EP2639666A1

    公开(公告)日:2013-09-18

    申请号:EP12159979.9

    申请日:2012-03-16

    申请人: ST-Ericsson SA

    IPC分类号: G05F1/56 G05F3/26

    摘要: A low-noise reference voltages distribution circuit (10) is disclosed, comprising a multi-output voltage to current converter (V/I_Conv) adapted to receive an input reference voltage (V R ) for providing a plurality of output reference currents (I 1 ,...,I N ) to be converted into a plurality of local reference voltages (V O1 ,..., V ON ) at corresponding receiving circuits (LCR 1 ,...,LCR N ) adapted to be connected to said reference voltages distribution circuit (10).
    The multi-output voltage to current converter (V/I_Conv) comprises:
    - an input section (20) adapted to generate on the basis of said input reference voltage (V R ) a reference current (I 0 ), the input section (20) comprising a current mirror input transistor (M0E) having a voltage controlled input terminal (g 0E );
    - an output section (50) comprising a plurality of current mirror output transistors (M01,...,M0N) each adapted to provide a corresponding output reference current of said plurality of reference currents (I 1 ,..., I N ), each of said current mirror output transistors (M01,...,M0N) comprising a voltage controlled input terminal (g 01 ,...,g 0N ), the output section (50) comprising a common input node (51) to which voltage controlled input terminals (g 01 ,...,g 0N ) of said current mirror output transistors (M01,...,M0N) are connected.
    The voltage to current converter (V/I_Conv) comprises a low-pass filter (30) having an input node (31) connected to said voltage controlled input terminal (g 0E ) of the current mirror input transistor (M0E) and an output node (33) connected to said common input node (51).

    摘要翻译: 公开了一种低噪声参考电压分配电路(10),其包括适于接收输入参考电压(VR)的多输出电压 - 电流转换器(V / I_Conv),用于提供多个输出参考电流(I 1, ...,IN)在适于连接到所述参考电压的相应接收电路(LCR 1,...,LCR N)处被转换成多个局部参考电压(V O1,...,V ON) 配电电路(10)。 多输出电压到电流转换器(V / I_Conv)包括: - 输入部分(20),其适于基于所述输入参考电压(VR)产生参考电流(I 0),输入部分(20) 包括具有电压控制输入端(g 0E)的电流镜输入晶体管(M0E); - 输出部分(50),包括多个电流镜输出晶体管(M01,...,M0N),每个电流镜输出晶体管适于提供所述多个参考电流(I 1,...,IN)的对应的输出参考电流, 每个所述电流镜输出晶体管(M01,...,M0N)包括电压控制输入端(g 01,...,g 0N),所述输出部分(50)包括公共输入节点(51) 连接所述电流镜输出晶体管(M01,...,M0N)的电压控制输入端子(g 01,...,g 0N)。 电压 - 电流转换器(V / I_Conv)包括具有连接到电流镜输入晶体管(M0E)的所述压控输入端(g 0E)的输入节点(31)的低通滤波器(30)和输出节点 (33)连接到所述公共输入节点(51)。

    Microphone preamplifier circuit
    9.
    发明公开
    Microphone preamplifier circuit 审中-公开
    Mikrofon-Vorverstärkerschaltung

    公开(公告)号:EP2552018A1

    公开(公告)日:2013-01-30

    申请号:EP11175387.7

    申请日:2011-07-26

    申请人: ST-Ericsson SA

    IPC分类号: H03F3/00 H03F3/45 H03F3/187

    摘要: A microphone preamplifier circuit (60) is described, adapted to be connected to a microphone circuit (MC D ), the microphone circuit (MC D ) comprising a microphone (3) and at least one output node (M o , M o ').
    The microphone preamplifier circuit (60) comprises a preamplifier (P A ) comprising:
    - at least one input node (10, 10') adapted to be connected to said output node (M o , Mo');
    - an operational amplifier (OA) comprising at least one input (20,20') and at least one output (21, 21');
    - at least one input DC decoupling capacitor (C D , C D' ) connected between said input node (10, 10') and said first input of the operational amplifier (20,20');
    - at least one feedback capacitor (C 2A , C 2A ') connected between the input (20,20') and the output (21,'21) of the operational amplifier (OA) in order to set together with said input DC decoupling capacitor (C D , C D' ) a gain value of the preamplifier circuit (60);
    - a first (40, 40') and a second feed node (41, 41') adapted to be fed by a first (V CIMIN ) and a second (V CM ) bias voltage respectively.
    The preamplifier (P A ) further comprises at least one switched capacitor (C 2B , C 2B ') adapted to be selectively and alternatively connected under the control of a clock signal (CK):
    - between said input (20, 20') and said output (21, 21') of the operational amplifier (OA); and
    - between said first (40, 40') and said second (41, 41') feed node.

    摘要翻译: 一种麦克风前置放大器电路(60)被描述为适于连接到麦克风电路(MC D),麦克风电路(MC D)包括麦克风(3)和至少一个输出节点(M o,M o'), 。 麦克风前置放大器电路(60)包括前置放大器(P A),包括: - 适于连接到所述输出节点(M o,Mo')的至少一个输入节点(10,10'); - 包括至少一个输入(20,20')和至少一个输出(21,21')的运算放大器(OA); - 连接在所述输入节点(10,10')和所述运算放大器(20,20')的所述第一输入端之间的至少一个输入DC去耦电容器(C D,C D'); - 连接在运算放大器(OA)的输入端(20,20')和输出端(21''21“之间)的至少一个反馈电容器(C 2A,C 2A'),以便与所述输入DC去耦合 电容器(CD,CD')前置放大器电路(60)的增益值; - 适于分别由第一(V CIMIN)和第二(V CM)偏置电压馈送的第一(40,40')和第二馈送节点(41,41')。 前置放大器(PA)还包括至少一个开关电容器(C 2B,C 2B'),其适于在时钟信号(CK)的控制下选择性地和可选地连接: - 在所述输入(20,20')和所述 输出(21,21'); 和 - 在所述第一(40,40')和所述第二(41,41')馈送节点之间。