Accurate digital-to-analog converter
    1.
    发明授权
    Accurate digital-to-analog converter 失效
    精确的数模转换器

    公开(公告)号:US5815103A

    公开(公告)日:1998-09-29

    申请号:US634306

    申请日:1996-04-16

    IPC分类号: H03M1/74 H03M1/66

    CPC分类号: H03M1/745

    摘要: A digital-to-analog converter that includes pairs of positive and negative current sources that are connected through switches to two differential output lines. The switches are controlled as a function of a digital data. Each pair of current sources includes a pair of transistors of an output stage of a transconductance amplifier. The transconductance amplifier receives a reference voltage at a non-inverting input, and receives at an inverting input, the voltage at the middle node of a bridge of resistors that is connected between the two differential out-put lines. The output of the converter is the voltage between the two differential output lines.

    摘要翻译: 一个数模转换器,包括通过开关连接到两个差分输出线的正和负电流源对。 开关作为数字数据的功能进行控制。 每对电流源包括跨导放大器的输出级的一对晶体管。 跨导放大器在非反相输入端接收参考电压,并在反相输入端接收连接在两个差分输出线之间的电阻桥的中间节点处的电压。 转换器的输出是两个差分输出线之间的电压。

    Double-input analog-to-digital converter using a single converter module
    2.
    发明授权
    Double-input analog-to-digital converter using a single converter module 失效
    使用单个转换器模块的双输入模数转换器

    公开(公告)号:US5696510A

    公开(公告)日:1997-12-09

    申请号:US443517

    申请日:1995-05-18

    摘要: The disclosure is an analog-to-digital converter of half-flash type providing for the multiplexing of two analog input signals and therefore requiring only one converter module. It includes a coarse comparator block used to determine the most significant bits of the converted signals and also determining the voltage range for two fine comparator blocks that determine the least significant bits of the converted signals, wherein each of the input signals is connected to a fine comparator block and said coarse comparator block compares alternatively the first and second input signals with a reference voltage. The analog-to-digital converter can be advantageously used for processing television signals.

    摘要翻译: 本公开是半闪存型的模数转换器,其提供两个模拟输入信号的复用,因此仅需要一个转换器模块。 它包括用于确定转换信号的最高有效位的粗略比较器块,并且还确定确定转换信号的最低有效位的两个精细比较器块的电压范围,其中每个输入信号被连接到一个精细 比较器块和所述粗略比较器块将第一和第二输入信号与参考电压进行比较。 模拟 - 数字转换器可以有利地用于处理电视信号。

    Current amplifier
    3.
    发明授权
    Current amplifier 失效
    电流放大器

    公开(公告)号:US6125094A

    公开(公告)日:2000-09-26

    申请号:US66726

    申请日:1998-04-23

    摘要: A current amplifier includes a cascode transistor for fixing the voltage of an input of the amplifier; a first constant current source connected between the input and a first supply voltage; a second constant current source, for providing a current lower than the first current source, connected between a second supply voltage and the cascode transistor; a second transistor, of different type than the cascode transistor, connected between the input and the second supply voltage, and controlled by the node between the cascode transistor and the second current source; and an output transistor of same type as the second transistor, connected to the second supply voltage and controlled by the node.

    摘要翻译: 电流放大器包括用于固定放大器的输入端的电压的共源共栅晶体管; 连接在所述输入端和第一电源电压之间的第一恒流源; 第二恒流源,用于提供连接在第二电源电压和共源共栅晶体管之间的低于第一电流源的电流; 第二晶体管,其不同于共源共栅晶体管的类型,连接在输入和第二电源电压之间,并由共源共栅晶体管和第二电流源之间的节点控制; 以及与第二晶体管相同类型的输出晶体管,连接到第二电源电压并由节点控制。

    Demodulator for an amplitude-modulated alternating signal
    6.
    发明授权
    Demodulator for an amplitude-modulated alternating signal 有权
    用于调幅交替信号的解调器

    公开(公告)号:US07215723B2

    公开(公告)日:2007-05-08

    申请号:US10239291

    申请日:2001-03-20

    IPC分类号: H04L27/00

    摘要: The invention concerns a demodulator of an amplitude-modulated signal (Vdb), characterised in that it comprises a peak detecting cell (DCR) capable of extracting the reference modulating signal (Vpeak1) of the modulated signal (Vdb); a first demodulator (FE) adapted to detect the peak of the reference modulating signal (Vpeak1) to generate a high comparison threshold and locate the start of the modulation, a second demodulator (RE) adapted to detect a trough of the reference modulating signal (Vpeak1) to generate a low comparison threshold and locate the end of the modulation; a logic processing unit capable of supplying the demodulated signal (Vdemod).

    摘要翻译: 本发明涉及一种幅度调制信号(Vdb)的解调器,其特征在于它包括能够提取调制信号(Vdb)的参考调制信号(Vpeak 1)的峰值检测单元(DCR); 适于检测参考调制信号(Vpeak 1)的峰值以产生高比较阈值并定位调制开始的第一解调器(FE),适于检测参考调制信号的谷值的第二解调器(RE) (Vpeak 1)产生低比较阈值并定位调制结束; 能够提供解调信号(Vdemod)的逻辑处理单元。

    Method for adjusting an electrical parameter on an integrated electronic component
    7.
    发明授权
    Method for adjusting an electrical parameter on an integrated electronic component 有权
    用于调整集成电子部件上的电参数的方法

    公开(公告)号:US07704757B2

    公开(公告)日:2010-04-27

    申请号:US10276509

    申请日:2001-03-13

    IPC分类号: H01L21/00 G06F19/00

    摘要: A method is provided for manufacturing an integrated electronic component arranged on a substrate wafer. According to the method, at least one metallization step is performed, and a value of an electrical parameter of the integrated electronic component is determined after the at least one metallization step. A subsequent metallization step is performed after determining the value of the electrical parameter. The subsequent metallization step is performed using an adjustment mask chosen from n predefined masks based on a desired value of the electrical parameter, so as to obtain the desired value of the electrical parameter of the integrated electronic component after manufacturing. In one preferred embodiment, a series of electrical tests is performed on the wafer using test equipment, and the value of the electrical parameter is determined using the same test equipment as is used to perform the series of electrical tests.

    摘要翻译: 提供一种用于制造布置在基板晶片上的集成电子部件的方法。 根据该方法,执行至少一个金属化步骤,并且在至少一个金属化步骤之后确定集成电子部件的电参数的值。 在确定电参数的值之后执行随后的金属化步骤。 随后的金属化步骤使用基于电参数的期望值从n个预定义掩模中选择的调整掩模来执行,以便在制造之后获得集成电子部件的电参数的期望值。 在一个优选实施例中,使用测试设备对晶片进行一系列电测试,并且使用与用于执行一系列电测试的相同的测试设备来确定电参数的值。

    NFC reader having a passive operating mode with low electrical consumption
    9.
    发明授权
    NFC reader having a passive operating mode with low electrical consumption 有权
    NFC读取器具有低耗电的无源操作模式

    公开(公告)号:US07975921B2

    公开(公告)日:2011-07-12

    申请号:US12103570

    申请日:2008-04-15

    IPC分类号: G06K7/06

    摘要: An inductive coupling reader includes a passive interface circuit for modulating the impedance of an antenna circuit and extracting from the antenna circuit a data signal and a RF clock signal, and circuitry for coupling the reader to a removable security module. The reader includes an emulation circuit for opening a RF transmission channel with another reader, a non-removable electrical link linking the emulation circuit to the passive interface circuit, by which the data signal and the RF clock signal are supplied to the emulation circuit, and a data bus clocked by a bus clock signal having a frequency inferior to the frequency of the RF clock signal, for linking the emulation circuit to the removable security module. The reader has low electrical consumption.

    摘要翻译: 电感耦合读取器包括用于调制天线电路的阻抗并从天线电路提取数据信号和RF时钟信号的无源接口电路,以及用于将读取器耦合到可拆卸安全模块的电路。 读取器包括用于与另一个读取器打开RF传输通道的仿真电路,将仿真电路连接到无源接口电路的不可拆卸电气连接,通过该无源接口电路将数据信号和RF时钟信号提供给仿真电路,以及 由总线时钟信号计时的数据总线,其频率低于RF时钟信号的频率,用于将仿真电路链接到可移除的安全模块。 读卡器电耗低。

    NFC READER HAVING A PASSIVE OPERATING MODE WITH LOW ELECTRICAL CONSUMPTION
    10.
    发明申请
    NFC READER HAVING A PASSIVE OPERATING MODE WITH LOW ELECTRICAL CONSUMPTION 有权
    NFC读取器具有低功耗的无源操作模式

    公开(公告)号:US20090101716A1

    公开(公告)日:2009-04-23

    申请号:US12103570

    申请日:2008-04-15

    IPC分类号: G06K7/06

    摘要: An inductive coupling reader includes a passive interface circuit for modulating the impedance of an antenna circuit and extracting from the antenna circuit a data signal and a RF clock signal, and circuitry for coupling the reader to a removable security module. The reader includes an emulation circuit for opening a RF transmission channel with another reader, a non-removable electrical link linking the emulation circuit to the passive interface circuit, by which the data signal and the RF clock signal are supplied to the emulation circuit, and a data bus clocked by a bus clock signal having a frequency inferior to the frequency of the RF clock signal, for linking the emulation circuit to the removable security module. The reader has low electrical consumption.

    摘要翻译: 电感耦合读取器包括用于调制天线电路的阻抗并从天线电路提取数据信号和RF时钟信号的无源接口电路,以及用于将读取器耦合到可拆卸安全模块的电路。 读取器包括用于与另一个读取器打开RF传输通道的仿真电路,将仿真电路连接到无源接口电路的不可拆卸电气连接,通过该无源接口电路将数据信号和RF时钟信号提供给仿真电路,以及 由总线时钟信号计时的数据总线,其频率低于RF时钟信号的频率,用于将仿真电路链接到可移除的安全模块。 读卡器电耗低。