Texas Instruments Incorporated Deutschland, Gmbh

Oliver Nehrig

Adolf Baumann

Carlo Peschke

Ernst Georg Muellner

Jens Graul

Ralph Ledwa

Dirk Preikszat

An electronic device comprising a first node to be coupled to a first antenna, a second node coupled to a second antenna, a third node to be coupled to a third antenna, a first comparator coupled with a first input to the first node and with a second input to a second node, a second comparator coupled with a first input to the first node and with a second input to the third node, a third comparator coupled with a first input to the second node and with a second input to the third node. Each of the first, the second and the third comparators are configured to compare a first current and a second current at the first input and the second input.

Electronic device and method for RFID

An electronic device is provided that is adapted to generate a supply voltage at an input node from a radio frequency (RF) signal. The electronic device includes a limiter coupled to the input node for limiting a supply voltage level at the input node that is generated by the received RF signal. The limiter is configured to draw a limiter current from the input node so as to limit the supply voltage level to a maximum and a magnitude of the limiter current is used for controlling a power consumption of the electronic device.

Power level indicator

An electronic device is provided, which includes a current supplying stage which is adapted to supply a first compensation current and a second compensation current to a first wire or a second wire, wherein the first compensation current is determined during a first clock period, when the first wire and the second wire are connected. The second compensation current is determined during a second clock period while the first wire and the second wire are not connected and the magnitude of the second current represents a ratio of a resistance value of the first wire and a resistance value of the second wire.

Electronic device and method for wire check

An ASK demodulator for use in an RFID transponder having a limiter circuit associated with the antenna circuit and converting the ASK antenna field strength modulation into an ASK limiter current modulation by limiting the antenna voltage to a fixed value and thereby causing the limiter current to be substantially proportional to the ASK antenna field strength, and a current discriminator circuit that discriminates the ASK limiter current modulation. By converting the field strength modulation into a proportional limiter current and discriminating that limiter current, a linear relationship and a stable demodulator sensitivity are achieved. The current discrimination can be made accurately under low-voltage conditions.

High dynamic range ASK demodulator for use in an RFID transponder

A method of capacitance-to-voltage conversion with an external sensor capacitor (C) and a capacitance-to-voltage converter () implemented on an integrated readout circuit that includes a reference capacitor (C), a sampling capacitor (C) and a sampling amplifier () and which has input terminals () to which the sensor capacitor (C) is connected. The method comprises the steps of a) applying a reference voltage (V) to the series connected sensor capacitor (C) and reference capacitor (C) and charging the sampling capacitor (C) to the potential at the interconnection node (A) between the sensor capacitor (C) and the reference capacitor (C), b) connecting the sampling capacitor (C) to inputs of the sampling amplifier. The method further comprises the steps of c) applying the reference voltage (V) to the series connected sensor capacitor (C) and reference capacitor (C) with a polarity opposite to that in step a) and charging the sampling capacitor (C) to the potential at the interconnection node (A) between the sensor capacitor (C) and the reference capacitor (C) and d) connecting the sampling capacitor (C) to the inputs of the sampling amplifier in a polarity opposite to that in step b).

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Kirchdorf, Germany

Oliver Nehrig