Data acquisition system
US8643526B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2013 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Feb 28, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A data acquisition system for converting an analog input signal to a digital output signal includes a programmable gain amplifier (PGA), an analog to digital converter (ADC), and an averaging module. The PGA generates first and second amplified signals during respective first and second conversion cycles. The first and second amplified signals include respective first and second amplified input signals and first and second sets of offset and noise signals. The first and second amplified input signals have the same polarities, and the first and second sets of offset and noise signals have opposite polarities. The ADC generates first and second digital samples corresponding to the first and second amplified signals respectively and the averaging module averages the first and second digital samples to eliminate the first and second sets of offset and noise signals from the digital output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.