Analog/digital conversion with analog filtering

Abstract

A circuit (100) comprises an input terminal (141) which is configured to receive an analog input signal (142). The circuit (100) also comprises a combination element (601) which is configured to combine a number of time-displaced signal values of the input signal (142) to form an analog combination signal (144). The circuit (100) also comprises a quantizer (131) having a converter core which is configured to receive the combination signal (144) via passive charge redistribution from the combination element (601) and to convert it into a digital output signal (145). Such techniques can thus provide for an analog/digital conversion with filtering in the analog domain.

Description

technical field [0001] A different example involves an analog-to-digital converter set up to filter an input signal in the analog domain. Background technique [0002] Analog-to-digital converters (analog-digital converters; ADC) are used in various applications, for example as integrated circuits (IC). For example, analog-to-digital converters are used to convert measurement signals into the digital domain. Usually, corresponding digital output signals are used as a basis for decision-making of subsequent procedures. Therefore, it is typically desirable to carry out a precise conversion of the analog input signal. That is, the integrity of a measurement or decision is typically related to the confidence level of the transformation. Here, higher signal noise can reduce the integrity of the measurement or decision. [0003] Techniques for reducing signal noise during analog-to-digital conversion are known. It is known, for example, to combine multiple measurements by ave...

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This technique again has the limitations of non-enforce

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