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公开(公告)号：US5079497A
公开(公告)日：1992-01-07
申请号：US567415
申请日：1990-08-14
Applicant: Stephane Barbu , Richard Morisson , Philippe Gandy
Inventor： Stephane Barbu , Richard Morisson , Philippe Gandy
CPC classification number: G05F1/565 , Y10S323/901
Abstract: The invention relates to a circuit intended to supply a reference voltage comprising a voltage generator (REF) provided with a supply terminal and an output for supplying a voltage having a given nominal value (V.sub.R) and comprising a differential amplifier (A), fed by a first supply voltage, whose non-inverting input is connected to the output of the voltage generator (REF). An output of the differential amplifier (A) is connected to an input of a follower stage (T) through a controlled switching device (1), the follower stage (T) having its input connected to the first supply voltage through a first resistor (R.sub.1) and having its output, which supplies the said reference voltage (V.sub.D), connected on the one hand to the inverting input of the differential amplifier (A) through a divider bridge and on the other hand to the supply termianl of the voltage generator (REF). A control circuit (C) of the switching device is operated so as to receive at least the supply voltage in such a manner that the switching device (1) is closed when the supply voltage reaches a threshold for which both the voltage generator and the differential amplifier are in a nominal operating zone.
Abstract translation: 本发明涉及一种旨在提供参考电压的电路，该电路包括设置有电源端子的电压发生器（REF）和用于提供具有给定额定值（VR）的电压并且包括差分放大器（A）的输出的输出，该差分放大器 第一电源电压，其非反相输入端连接到电压发生器（REF）的输出端。 差分放大器（A）的输出通过受控开关器件（1）连接到跟随器级（T）的输入端，所述跟随器级（T）的输入端通过第一电阻器 R1），并且其输出端通过分压桥将所述参考电压（VD）提供给差分放大器（A）的反相输入，另一方面连接到电压发生器的电源端 （REF）。 操作开关装置的控制电路（C），以便至少接收电源电压，使得当电源电压达到电压发生器和差动器的阈值时，开关装置（1）闭合 放大器处于标称工作区。
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公开(公告)号：US6081214A
公开(公告)日：2000-06-27
申请号：US39760
申请日：1998-03-16
Applicant: Richard Morisson , Philippe Gandy , Frederic Darthenay
Inventor： Richard Morisson , Philippe Gandy , Frederic Darthenay
CPC classification number: H03F3/45479 , H03M1/1028 , H03M1/167 , H03M1/76
Abstract: An A/D conversion device includes: an amplifier AMP provided with regulating means controlled by a control signal OC or GC for adjusting the value of its output voltage V2, andan A/D converter ADC2 intended to convert the output voltage V2 of the amplifier AMP into digital signals.The device includes means S0 or MUX for setting the input of the amplifier AMP at a reference potential when a calibration signal CALOS or CALG is active, and at least a calibration arrangement DEC0 or DECM each havinga module comparing the output of the second converter ADC2 with a predetermined binary word,a module supplying the control signal OC or GC whose value depends on the result of said comparison, andmeans for storing the control signal OC or GC when the corresponding calibration signal CALOS or CALG is inactive.
Abstract translation: A / D转换装置包括：放大器AMP，其具有由用于调节其输出电压V2的值的控制信号OC或GC控制的调节装置;以及用于转换放大器的输出电压V2的A / D转换器ADC2 AMP进入数字信号。 器件包括用于当校准信号CALOS或CALG有效时将放大器AMP的输入设置为参考电位的装置S0或MUX，以及至少校准装置DEC0或DECM，每个具有比较第二转换器ADC2的输出的模块 具有预定的二进制字，提供其值取决于所述比较结果的控制信号OC或GC的模块以及当对应的校准信号CALOS或CALG无效时用于存储控制信号OC或GC的装置。
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公开(公告)号：US6069577A
公开(公告)日：2000-05-30
申请号：US39756
申请日：1998-03-16
Applicant: Richard Morisson , Philippe Gandy , Frederic Darthenay
Inventor： Richard Morisson , Philippe Gandy , Frederic Darthenay
CPC classification number: H03M1/1014 , H03M1/167
Abstract: An A/D conversion device includes:an amplifier AMP receiving an input voltage V1 and supplying an output voltage V2, andan A/D converter ADC2 intended to convert the output voltage V2 of the amplifier AMP into a digital signal by comparing it with reference voltages generated by a resistance ladder R2 traversed by a bias current.The device includes a multiplexer MUX for setting the input of the amplifier AMP at a reference potential when a calibration signal CALG is active, and a calibration arrangement DECM which compares the output of the second converter ADC2 with a predetermined binary word, supplies a control signal GC, which depends on the result of said comparison and determines the value of the bias current, and stores the control signal GC when the calibration signal CALG is inactive.
Abstract translation: A / D转换装置包括：放大器AMP，其接收输入电压V1并提供输出电压V2;以及A / D转换器ADC2，其旨在通过将放大器AMP的输出电压V2与参考电压进行比较来将其转换为数字信号 由偏置电流穿过的电阻梯R2产生的电压。 该装置包括多路复用器MUX，用于当校准信号CALG有效时将放大器AMP的输入设置为参考电位，并且将第二转换器ADC2的输出与预定二进制字进行比较的校准装置DECM提供控制信号 GC，其取决于所述比较的结果并确定偏置电流的值，并且当校准信号CALG不活动时存储控制信号GC。
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4.发明授权Analog/digital converter with automatic control for controlling offset and gain 失效具有控制偏移和增益的自动控制的模/数转换器
公开(公告)号：US5995032A
公开(公告)日：1999-11-30
申请号：US94832
申请日：1998-06-15
Applicant: Philippe Gandy
Inventor： Philippe Gandy
CPC classification number: H03M1/0845 , G05F3/222 , H03M1/12
Abstract: The circuit, arranged between a source of higher voltage (VCC) and a source of lower voltage (ground), comprises an analog/digital converter (ADC) which has a resistor ladder (RL) connected between a top terminal (Vtop), a bottom terminal (Vbot) for supplying a series of reference voltages. According to the invention, this circuit includes a bias generator arrangement formed by a resistor (Rmid) connected on one side to the supply voltage source and on the other side to a reference current source (Ip0), and automatic control means (A2) for controlling a variable impedance element (T5) inserted between the connection (Vbot) at the bottom of the ladder and ground, which automatic control means are suitable for controlling the voltage (FS) at the terminals of the resistor ladder.
Abstract translation: 布置在较高电压源（VCC）和较低电压源（接地）之间的电路包括模/数转换器（ADC），其具有连接在顶端（Vtop）， 底端（Vbot），用于提供一系列参考电压。 根据本发明，该电路包括由电阻器（Rmid）形成的偏置发生器装置，该电阻器一端连接到电源电压源，另一侧连接到参考电流源（Ip0）;以及自动控制装置（A2），用于 控制插入梯子底部的接地（Vbot）和地之间的可变阻抗元件（T5），该自动控制装置适用于控制电阻梯的端子处的电压（FS）。
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