31.
    发明专利
    未知

    公开(公告)号:DE102006031549A1

    公开(公告)日:2008-01-31

    申请号:DE102006031549

    申请日:2006-07-07

    Abstract: An electronic circuit includes a bandgap reference circuit and a start-up circuit for starting up the bandgap reference circuit. The bandgap reference circuit includes at least one electric path having a semiconductor diode and a resistor connected in series with said semiconductor diode, wherein the voltage across the resistor is proportional to the absolute temperature of the semiconductor diode. The start-up circuit assists starting up the bandgap reference circuit until the voltage across the resistor reaches a preset threshold voltage, and the start-up circuit turns off automatically when the voltage across the resistor has reached the threshold voltage.

    35.
    发明专利
    未知

    公开(公告)号:DE10223767B4

    公开(公告)日:2004-10-21

    申请号:DE10223767

    申请日:2002-05-28

    Abstract: A circuit configuration for processing a signal of a sensor includes an amplifier for amplifying the signal of the sensor. This signal has switch-over points between different signal states. The circuit configuration is constructed in such a manner that the amplifier and the sensor operate continuously in a chopper mode. Furthermore, a control loop is provided for determining offset components in the signal of the sensor and for removing the offset components from the signal of the sensor.

    36.
    发明专利
    未知

    公开(公告)号:DE59810292D1

    公开(公告)日:2004-01-08

    申请号:DE59810292

    申请日:1998-09-30

    Abstract: A sensor, in particular a micromechanical pressure sensor, has two identical capacitive partial structures coupled to an evaluation circuit. In the case of in-phase driving, an additive signal is present as a pressure-dependent useful signal. In the case of in-antiphase driving, a difference signal is present as a diagnostic signal.

    40.
    发明专利
    未知

    公开(公告)号:DE19942450A1

    公开(公告)日:2001-03-29

    申请号:DE19942450

    申请日:1999-09-06

    Abstract: The invention relates to a hunting analog-digital converter, comprising a comparator circuit (10) for comparing an analog input signal with an analog reference signal, whereby said comparator circuit (10) emits a comparator output signal and an evaluation circuit (12) for evaluating the comparator output signal. The invention also comprises a counter unit (14) with an adjustable counter incrementation for emitting a digital counter value and a digital-analog converter (18) for converting the digital counter value into the analog reference signal, whereby the evaluation circuit (12) adjusts the counter incrementation in accordance with the evaluated comparator output signal.

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