Infineon Technologies Ag

Christian Vogel

Dieter Draxelmayr

Franz Kuttner

Peter Singerl

Gernot Kubin

In an embodiment, a method of generating a pulse-width modulated signal from an input signal includes calculating a finite number of basis functions of a first pulse-width modulated signal based on the input signal, and forming an electronic output based on the calculated finite number of basis functions.

System and method for generating a pulse-width modulated signal

An arrangement for a time interleaved analog-to-digital converter that converts an signal to a digital signal and has a converter array with a plurality of analog-to-digital converters arranged in a fixed sequence in parallel with one another and can be operated with staggered timing with respect to one another is disclosed. The arrangement has a connection network which, for the purposes of actuation with staggered timing, generates in each case one control signal for an individual analog-to-digital converter in each case, with the connection network predefining the time sequence with which the control signals actuate the individual analog-to-digital converters in such a way that owing to this sequence of the control signals and thus the sequence of the actuated individual analog-to-digital converters there is at least a reduction in an interference spectrum in the spectrum of the input and/or output signal. A sorting method for operating this analog-to-digital converter is also disclosed.

Analog-to-digital converter operable with staggered timing

A signal processing system allows reconstruction of a non-uniformly sampled analog signal including sampling an analog signal at a sampling period of resulting in a quantized non-uniformly sampled signal. The non-uniformly sampled signal includes a sampled signal and an amplitude error between a signal sampled with the equidistant sample period and the non-uniformly sampled signal. A reconstructed amplitude error is determined through the time offset and the non-uniformly sampled signal, and is subtracted from the non-uniformly sampled signal. The signal processing system may be implemented in an electrocardiogram monitoring device or a mobile phone device.

System for reconstruction of non-uniformly sampled signals

A circuit arrangement () for compensating for nonlinearities (NL, NL) from analog/digital converters () operating with different timing, having at least two analog/digital converters () which are each clocked with different timing and which each have a predetermined nonlinear converter characteristic with integral nonlinearities (NL, NL), and which accept an analog input signal (VIN) applied to an input () on the circuit arrangement and respectively convert it into a digital intermediate signal (Z, Z); and having a multiplexer () which is arranged downstream of the analog/digital converters and which successively switches through the digital intermediate signals (Z, Z) in order to produce a digital output signal (ZD) from the circuit arrangement (); where at least one of the nonlinear converter characteristics of the various analog/digital converters () is predetermined such that after the intermediate signals have been combined in the multiplexer () the integral nonlinearities (NL, NL) in the various analog/digital converters () essentially compensate for one another.

Circuit arrangement for compensation for nonlinearities from analog/digital converters operating with different timing

Circuit arrangement () for the delay adjustment of analog-to-digital converters (--N,) operating in a temporally offset manner, having at least two analog-to-digital converters (--N,) each having a signal path, which receive an analog signal (VI) present at an input () of the circuit arrangement () and in each case convert it into a digital intermediate signal (Z, . . . ZN), the analog-to-digital converters (--N,) in each case being clocked by clock signals (CLK, . . . CLKN) which have a predetermined time offset with respect to one another; having a logic circuit (), which interconnects the digital intermediate signals (Z, . . . ZN) for the purpose of generating a digital output signal (ZD) of the circuit arrangement (); it being possible to set the bandwidth of the signal paths of the analog-to-digital converters (--N,) in each case in such a way that a deviation of the clock signal (CLK, . . . CLKN) from the predetermined time offset for the respective analog-to-digital converter (--N,) is compensated for by a change in the bandwidth of at least signal path.

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Graz, Austria

Christian Vogel