Analog to digital converter for highly dynamic signals, using a variable reference voltage to floating decimal point output
US4990913A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jan 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/187
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An acquisition device for digitizing highly dynamic signals. After amplification in a fixed gain amplifier, the signals are applied to a sample and hold unit, the output of which is connected to an analog-to-digital converter to which a variable reference voltage is applied. This reference voltage is available at the output of a multiplexer to the inputs of which voltages are applied derived from sub-divisions of a calibrated voltage. The choice of the reference voltage is effected by a logic assembly as a function of the comparisons made by comparators between the sampled voltage and the derived voltages. The digitized signals are represented by a digital word from the converter and a digital word of gain G from the logic assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.