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US 11,728,823 B2Granted
Analog-digital converter apparatus, sensor system and method for analog-digital conversion
AssigneeInfineon Technologies AG
InventorsMario Motz, Florian Brugger, Carlos Humberto Garcia Rojas, Tobias Werth
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Abstract
Apparatuses and methods for analog-digital conversion and corresponding systems having a sensor and an apparatus of this type are provided. Demodulation is executed with no variable preamplification, followed by continuous-time analog-digital conversion, at least in time segments, which further employs chopper techniques.
Claims28
An apparatus for analog-digital conversion, comprising:
- a demodulator configured to demodulate an input signal using a demodulation signal, which has a demodulation frequency, with no variable preamplification;
- a chopper modulator arranged down-circuit from the demodulator for chopping based on a chopper signal;
- an analog-digital converter arranged down-circuit from the chopper modulator and configured to operate in a continuous-time mode at least in time segments;
- and
- a chopper demodulator arranged down-circuit from the analog-digital converter for chopping based on the chopper signal.
2 more elements
An apparatus for analog-digital conversion, comprising:
- an analog-digital converter operating in continuous-time mode, at least in time segments, the analog-digital converter comprising:
- at least one integrating capacitor, which is connected to a remainder of the analog-digital converter in accordance with a chopper signal, wherein the chopper signal has a frequency which is equal to a demodulation frequency for a demodulation of an input signal of the apparatus;
- and
- a chopper demodulator arranged down-circuit from the analog-digital converter for chopping based on the chopper signal.
1 more element
A system, comprising:
- a sensor configured to generate a sensor signal;
- and
- a demodulator configured to demodulate the sensor signal using a demodulation signal, which has a demodulation frequency, with no variable preamplification;
- a chopper modulator arranged down-circuit from the demodulator for chopping based on a chopper signal;
- an analog-digital converter arranged down-circuit from the chopper modulator and configured to operate in a continuous-time mode at least in time segments;
- and
- a chopper demodulator arranged down-circuit from the analog-digital converter for chopping based on the chopper signal.
4 more elements
A method for analog-digital conversion, comprising:
- directly demodulating an input signal with no variable preamplification;
- and
- performing a continuous-time analog-digital conversion, at least in time segments, of the demodulated input signal with chopper modulation at a chopper frequency and chopper demodulation at the chopper frequency.
A method for analog-digital conversion, comprising:
- performing a continuous-time analog-digital conversion, at least in time segments, of an input signal, wherein the continuous-time analog-digital conversion comprises operating integrating capacitors based on a chopper signal, wherein the chopper signal has a chopper frequency that is equal to a demodulation frequency used for demodulation of the input signal that is to be converted.
Dependencies are inferred from the claim text.