Abstract:
Current supply circuit for supplying a circuit with an internal supply voltage on the basis of an external supply voltage with an bipolar transistor for realizing reverse-connect protection for the circuit to be supplied, a supply current flowing through the bipolar transistor's collector-emitter path, a regulating circuit connected to the bipolar transistor ensuring that the bipolar transistor is operated at the limit to saturation.
Abstract:
A system including a first transistor, a first capacitor and a circuit. The first transistor has a first control input and is configured to regulate an output voltage. The first capacitor is coupled at one end to the first control input and at another end to a circuit reference. The circuit is configured to provide a first voltage to the first control input, where the first voltage includes an offset voltage that is referenced to the output voltage and adjusted to compensate for variations in the first transistor.
Abstract:
A semiconductor device including a Hall effect sensor and related method. The Hall effect device includes a substrate having a first conductivity type and an epitaxial layer having a second conductivity type defining a Hall effect portion. A conductive buried layer having the second conductivity type is situated between the epitaxial layer and the substrate. First and second output terminals and first and second voltage terminals are provided, with the second voltage terminal being coupled to the conductive buried layer.
Abstract:
The inventive circuitry on a semiconductor chip includes a first functional element having a first electronic functional-element parameter that exhibits a dependence relating to the mechanical stress present in the semiconductor circuit chip in accordance with a first functional-element stress influence function. The first functional element provides a first output signal based on the first electronic functional-element parameter and mechanical stress. A second functional element has a second electronic functional-element parameter that exhibits a dependence in relation to the mechanical stress present in the semiconductor circuit chip in accordance with a second functional-element stress influence function. The second functional element is configured to provide a second output signal based on the second electronic functional-element parameter and the mechanical stress. A combiner combines the first and second output signals to obtain a resulting output signal exhibiting a predefined dependence on the mechanical stress present in the semiconductor circuit chip.
Abstract:
A signal conditioning arrangement includes a sensor arrangement for sensing a measured quantity and for outputting an output signal having a first or a second logical signal state based on the measured quantity, and means for generating an evaluating impulse if the logical signal state of the output signal does not change for a maximum predetermined time duration, and which are further formed to allocate a first or a second pulse signal state, which differs from the signal state of the output signal which the output signal has during the predefined time duration, to the evaluating impulse. Furthermore, the signal conditioning arrangement includes means for combining the output signal and the evaluating impulse, with means for providing being formed to provide a conditioned output signal, the conditioned output signal having, when an evaluating impulse is present, the impulse signal state thereof and otherwise having the logical signal state of the output signal.
Abstract:
A sigma-delta converter is disclosed. In one embodiment, the sigma-delta converter includes two series-connected converter stages which are each supplied with a feedback signal, a comparator stage which is connected downstream of the second converter stage, which is supplied with the output signal from the second converter stage and which provides an at least two-value comparator signal, and at least one output stage which has at least one digital integrator and which produces a multibit signal as output signal. The sigma-delta converter also has a first feedback look, which is supplied with the output signal and which has a multibit digital-analog converter which is supplied with the output signal and which converts this output signal into a first feedback signal with an amplitude that is dependent on the output signal, and a second feedback loop, which is supplied with the comparator signal, having a digital-analog converter which converts a signal that is dependent on the comparator signal into the second feedback signal.
Abstract:
A signal conditioning arrangement includes a sensor arrangement for sensing a measured quantity and for outputting an output signal having a first or a second logical signal state based on the measured quantity, and means for generating an evaluating impulse if the logical signal state of the output signal does not change for a maximum predetermined time duration, and which are further formed to allocate a first or a second pulse signal state, which differs from the signal state of the output signal which the output signal has during the predefined time duration, to the evaluating impulse. Furthermore, the signal conditioning arrangement includes means for combining the output signal and the evaluating impulse, with means for providing being formed to provide a conditioned output signal, the conditioned output signal having, when an evaluating impulse is present, the impulse signal state thereof and otherwise having the logical signal state of the output signal.
Abstract:
Temperature-stabilized oscillator circuit A temperature-stabilized oscillator circuit (1) comprises a first part with a first temperature dependence and a second part with a second temperature dependence, which is different from the first temperature dependence. A charge storage device (C2), a controllable upward-integration current source (T2) for charging the charge storage device (C2), a controllable downward-integration current source (TB3) for discharging the charge storage device (C2) and two resistors (R2, R1) having the same temperature coefficients are contained in each case in one of the two parts.
Abstract:
An oscillator circuit having a charge storage device, an upward integration current source, and a downward integration current source is described. The charge storage device is also connected to a comparator in order to drive the current sources as a function of a lower comparator threshold and an upper comparator threshold. In consequence, a triangular waveform voltage is formed across the charge storage device, on the basis of the relaxation principle. The difference voltage from the two comparator thresholds is dropped across a first resistor. Since the comparator itself as well as the lower and upper current thresholds are formed in a common current path, this oscillator circuit has a particularly low current draw.
Abstract:
An amplifier circuit with offset compensation is particularly suited for a Hall element. In addition to the useful signal demodulation that is normally present and connected downstream of an amplifier, an error signal demodulator provides an error signal demodulation. The measured signals that are tapped off at the Hall sensor are coupled out at the input or output of the amplifier, and a demodulated error signal is fed back to the input of the amplifier. This makes it possible to reduce the drive range of the amplifier. The amplifier circuit is suitable in particular for Hall sensors that are operated in chopped mode.