Ams Ag

Chandra Nyshadham

Ravi Kumar Adusumalli

Josef Kriebernegg

Rohit Ranganathan

Krishna Kanth Avalur

Sudhakar Singamala

Veeresh Babu Vulligaddala

Hafeez Koonari Thoombath

Parvathy Sasikala Jayachandran Pillai

Rahul Thottathil

A proximity sensor () with crosstalk compensation comprises a transmitting circuit () to transmit a signal to be reflected at a target () and a disturbing object (), and a receiving circuit () to receive a reflected signal (RS) having a useful component (RSI) and a noise component (RS). The receiving circuit () comprises an output node (A) to provide an output signal (Vout) in dependence from the distance of the proximity sensor () from the target (). The receiving circuit () comprises a crosstalk compensation circuit () comprising a first charging circuit () to provide a first charge for for coarse crosstalk compensation and a second charging circuit () to provide a second charge for fine crosstalk compensation. A control circuit () sets an amount of the first and the second charge so that the output signal (Vout) of the crosstalk compensation circuit () is dependent on the useful component (RSI) and independent on the noise component (RS) of the reflected signal (RS).

Proximity sensor with crosstalk compensation

An analog-to-digital converter () comprises a first and a second sampling capacitor (), a first integrator (), a first and a second input switch () coupling a first input terminal () and a common mode terminal () to a first electrode of the first sampling capacitor (), a third and a fourth input switch () coupling a second input terminal () and the common mode terminal () to a first electrode of the second sampling capacitor (), a fifth and a sixth input switch () coupling a second electrode of the first sampling capacitor () to an amplifier common mode terminal () and the first integrator input (), and a seventh and an eighth input switch () coupling a second electrode of the second sampling capacitor () to the amplifier common mode terminal () and the second integrator input ().

Analog-to-digital converter, measurement arrangement and method for analog-to-digital conversion

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Chandra Nyshadham