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US 2024/0223204 A1Published application
Ramp circuit
Assigneeams Sensors Belgium BVBA
InventorKevin FRONCZAK
Life of this patent
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Abstract
Disclosed herein is a ramp circuit for an analogue to digital converter, ADC. The ramp circuit includes a ramp unit configured to provide a ramp signal usable for sampling an analogue signal. The ramp circuit also includes a hold unit connected to the ramp unit, the hold unit is configured to hold a reference voltage for resetting the ramp signal between subsequent samplings of the analogue signal.
Claims16
A ramp circuit for an analogue to digital converter (ADC) the ramp circuit comprising:
- a ramp unit configured to provide a ramp signal usable for sampling an analogue signal;
- and
- a hold unit connected to the ramp unit and configured to hold a reference voltage for resetting the ramp signal between subsequent samplings of the analogue signal.
A method of converting an analogue signal to a digital signal, the method comprising:
- sampling the analogue signal using a ramp signal;
- resetting the ramp signal from a hold capacitor;
- sampling a reference signal using the ramp signal;
- and
- subtracting the sampled reference signal from the sampled analogue signal to provide an output signal.
2 more elements
Dependencies are inferred from the claim text.