Back to results
US 7,609,188 B2Granted
Multi-standard analog-to-digital data conversion
AssigneeInfineon Technologies AG
InventorsAntonio Di Giandomenico, David San Segundo Bello, Andreas Wiesbauer, Susana Paton Alvarez, Jorg Hauptmann
Life of this patent
Estimating the term…
Abstract
Implementations related to multi-standard digital subscriber line analog-to-digital data conversion are described.
Claims19
A circuit, comprising:
- at least first and second sigma delta converters for processing signals of multiple digital subscriber line (DSL) standards, wherein:
- in a first configuration the circuit processes signals of a first DSL standard utilizing either of the first and the second sigma delta converters;
- in a second configuration the circuit processes signals of a second DSL standard utilizing the first sigma delta converter cascaded into the second sigma delta converter;
- and
- in a third configuration the circuit is configured to bypass a set of components in the second sigma delta converter to process signals of a third DSL standard.
2 more elements
A device, comprising:
- a circuit comprising at least first and second sigma delta converters for processing analog input signals selected from one of multiple digital subscriber line (x-DSL) standards, wherein to process at least one of the standards, the analog input signals are received at the first sigma delta converter and quantization noise from the first sigma delta converter is processed by the second sigma delta converter and wherein digital output of the circuit is derived by subtracting an output of the second sigma delta converter from an output of the first sigma delta converter;
- wherein each of the first and second sigma delta converters includes a pair of serially arranged integrators, a feedback loop, and a clock, and wherein the circuit can be tuned to a particular x-DSL analog input signal standard by adjusting a frequency of the clock and coefficients of the integrators and a resonator.
A method, comprising:
- identifying an input standard from multiple digital subscriber line (x-DSL) standards;
- and
- enabling standard specific components of a configurable multistage noise shaping (MASH) circuit to process analog input signals of the identified input standard, wherein:
- a first configuration of the MASH circuit processes signals of a first DSL standard utilizing either of a first and a second sigma delta converters,
- a second configuration of the MASH circuit processes signals of a second DSL standard utilizing the first sigma delta converter cascaded into the second sigma delta converter, and
- a third configuration the circuit bypasses a set of components in the second sigma delta converter to process signals of a third DSL standard.
3 more elements
A device, comprising:
- a circuit comprising at least first and second sigma delta converters for processing analog input signals selected from one of multiple communications standards, wherein:
- in a first configuration the circuit processes signals of a first DSL standard utilizing either of the first and the second sigma delta converters,
- in a second configuration the circuit processes signals of a second DSL standard utilizing the first sigma delta converter cascaded into the second sigma delta converter, and
- in a third configuration the circuit is configured to bypass a set of components in the second sigma delta converter to process signals of a third DSL standard.
1 more element
Dependencies are inferred from the claim text.