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US 2011/0210880 A1Published application
Analog-to-digital converter
AssigneeInfineon Technologies AG
InventorSimon HAINZ
Life of this patent
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Abstract
Various implementations relating to analog-to-digital converters are provided. A comparator of such a circuit is used for converting different analog input signals, while analog-to-digital conversion circuitry for these conversions is implemented at least partially separately. In other implementations, a comparator is used both for analog-to-digital conversion and for comparing an input signal to a constant or non-constant value.
Claims25
An apparatus, comprising:
- a first analog input,
- a second analog input,
- a comparator, a first input of said comparator being coupled with said first analog input and said second analog input,
- analog-to-digital conversion circuitry coupled with an output of said comparator and a second input of said comparator,
- wherein a first portion of said analog-to-digital conversion circuitry associated with converting a signal applied to said first analog input is implemented at least partially separate from a second portion of said analog-to-digital conversion circuitry associated with converting a signal applied to said second analog input.
2 more elements
An apparatus, comprising:
- a comparator,
- a demultiplexer, an input of said demultiplexer being coupled with an output of said comparator,
- at least one analog signal input, said at least one analog signal input being coupled with a first input of said comparator, and
- a digital-to-analog converter, an output of said digital-to-analog converter being coupled with a second input of said comparator.
1 more element
An apparatus, comprising:
- a first analog signal input,
- a second analog signal input,
- a multiplexer, a first input of said multiplexer being coupled with said first analog signal input and a second input of said multiplexer being coupled with said second analog signal input,
- a comparator, a first input of said comparator being coupled with an output of said multiplexer,
- a analog-to-digital conversion algorithm, an input of said analog-to-digital conversion algorithm being coupled with an output of said comparator,
- a digital-to-analog converter, an input of said digital-to-analog converter being coupled with an output of said analog-to-digital conversion algorithm and an output of said analog-to-digital conversion algorithm being coupled to a second input of said comparator,
- a first memory portion coupled with said analog-to-digital conversion algorithm, said first memory portion being configured to store an output value of said analog-to-digital conversion algorithm related to an analog-to-digital conversion of a signal applied to said first signal input, and
- a second memory portion different from said first memory portion, said second memory portion being configured to store an output value of said analog-to-digital conversion-algorithm related to an analog-to-digital conversion of a signal applied to said second signal input.
5 more elements
A method, comprising:
- alternately providing analog signals to a comparator,
- providing a comparator output to a analog-to-digital conversion circuitry comprising a first portion associated with the conversion of a first one of said analog signals and a second portion associated with the conversion of a second one of said analog signals, wherein said first and second portions are at least partially implemented separately.
A method, comprising:
- providing one or more signals to a comparator, and
- alternately providing a comparator output to a analog-to-digital conversion and to a comparator signal output.
Dependencies are inferred from the claim text.