Interface for hybrid sigma-delta data converter
AssigneeMarvell International Ltd.
InventorsCao-Thong Tu, Heinz Maeder
Life of this patent
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Abstract
A hybrid sigma-delta converter that includes a continuous-time circuit that processes an input signal and generates a first output signal, an interface circuit that receives the first output signal from the continuous-time circuit and filters the first output signal thereby generating a second output signal, and a discrete-time circuit that processes the second output signal received from the interface circuit. The interface circuit further reduces the coupling of noise generated from the operation of the discrete time circuit to the preceding continuous-time circuit.
Claims18
A hybrid sigma-delta converter, comprising:
- a continuous-time (CT) circuit that processes an input signal and generates a first output signal;
- an interface circuit that receives the first output signal from the CT circuit and filters the first output signal thereby generating a second output signal;
- and
- a discrete-time (DT) circuit that processes the second output signal received from the interface circuit,
- wherein the interface circuit further filters noise generated from operation of the DT circuit.
A method of operating a hybrid sigma-delta converter, comprising:
- performing continuous-time processing on a sampled input signal and generating a first output signal;
- filtering the first output signal to generate a second output signal;
- performing discrete-time processing on the second output signal;
- and
- filtering noise generated by the discrete-time processing of the second output signal.
A hybrid sigma-delta converter, comprising:
- continuous-time (CT) means for processing an input signal and for generating a first output signal;
- interface means for receiving the first output signal from the CT means and for filtering the first output signal thereby generating a second output signal;
- and
- discrete-time (DT) means for processing the second output signal received from the interface means,
- wherein the interface means further filters noise generated from operation of the DT means.
Dependencies are inferred from the claim text.