Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Sick | Stegmann Gmbh

Harald Neubauer

David Hopp

Reinhold Mutschler

Johann Hauer

Stephan Junger

Nanko Verwaal

Harish Balasubramaniam

Matthias Völker

A capacitive voltage divider arrangement includes a first and second voltage divider and a first and second parasitic capacitance formed between the first and second capacitive voltage divider. The first capacitive voltage divider includes: a signal terminal; first capacitance for coupling the terminal to a reference potential; second capacitance; and third capacitance that is coupleable to the reference potential, the second capacitance being coupled in-between the terminal and third capacitance. The second capacitive voltage divider includes: a first compensation capacitance for coupling the terminal to the reference potential, the first compensation capacitance further being coupled to the terminal via the first parasitic capacitance; second compensation capacitance; and third compensation capacitance that is coupleable to the reference potential, the second compensation capacitance being coupled in-between the terminal and third compensation capacitance, and the second parasitic capacitance coupling the third capacitance to the third compensation capacitance.

Capacitive voltage divider

A hybrid analog-to-digital converter includes a plurality of converting circuits. Each converting circuit is configured to provide a digital signal based on an analog input signal by performing a successive approximation conversion to obtain, as a result of the successive approximation conversion, a first number of bits of the digital signal, and by subsequently performing a slope conversion based on a common variable reference voltage to obtain a second number of bits of the digital signal, the second number of bits corresponding to a residual between the analog input signal and the result of the successive approximation conversion. The hybrid analog-to-digital converter further includes a common variable reference voltage provider configured to provide to each converting circuit of the plurality of converting circuits the common variable reference voltage.

Hybrid analog-to-digital converter, an image sensor and a method for providing a plurality of digital signals

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Erlangen, Germany

Harald Neubauer