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US 12,429,547 B2Granted
Ranging systems and methods for decreasing transitive effects in multi-range materials measurements
AssigneeLake Shore Cryotronics, Inc.
InventorHouston Fortney
Life of this patent
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Abstract
A measurement system includes a gain chain configured to amplify an analog input signal; a range selector configured to select a gain between the analog input signal and a plurality of analog-to-digital converter (ADC) outputs from a plurality of ADCs, wherein each ADC output has a path, and a gain of each output path is made up of a plurality of gain stages in the gain chain; and a mixer configured to combine the plurality of ADC outputs into a single mixed output.
Claims18
A measurement system comprising:
- a gain chain configured to amplify an analog input signal;
- a range selector configured to select a gain between the analog input signal and a plurality of analog-to-digital converter (ADC) outputs from a plurality of ADCs;
- and
- a mixer configured to combine the plurality of ADC outputs into a single mixed output based in part on the selection of the range selector, wherein:
- a first portion of the gain chain is connected to a first one of the plurality of ADCs via an input path of the first one of the plurality of ADCs to apply a collective gain of the first portion to the analog input signal before input of the analog input signal to the first one of the plurality of ADCs;
- and
- a second portion of the gain chain is connected to a second one of the plurality of ADCs via an input path of the second of the plurality of ADCs to apply a collective gain of the second portion to the analog input signal before input of the analog input signal to the second one of the plurality of ADCs,
- wherein the combining of the plurality of ADC outputs is performed according to a weighted sum of the plurality of ADC outputs.
5 more elements
A method comprising:
- amplifying an analog input signal using a gain chain;
- selecting a gain between the analog input signal and a plurality of analog-to-digital converter (ADC) outputs from a plurality of ADCs;
- and
- combining the plurality of ADC outputs into a single mixed output, wherein:
- a first portion of the gain chain is connected to a first one of the plurality of ADCs via an input path of the first one of the plurality of ADCs to apply a collective gain of the first portion to the analog input signal before input of the analog input signal to the first one of the plurality of ADCs;
- and
- a second portion of the gain chain is connected to a second one of the plurality of ADCs via an input path of the second of the plurality of ADCs to apply a collective gain of the second portion to the analog input signal before input of the analog input signal to the second one of the plurality of ADCs,
- wherein the combining of the plurality of ADC outputs is performed according to a weighted sum of the plurality of ADC outputs.
5 more elements
Dependencies are inferred from the claim text.