Enabling lower system power and higher accuracy for intelligent system management and industrial control applications, Actel has announced an enhanced software-based calibration capability for its mixed-signal Fusion programmable system chips (PSCs).
With analog-to-digital converter (ADC) accuracy as high as 0,53%, the new calibration intellectual property (IP) solution eliminates the additional discrete ADCs and pre-scalers often required to achieve this level of accuracy. Combined with the integration benefits offered by mixed-signal Fusion PSCs, the easy-to-use calibration option offers customers greater accuracy, lower system power, reduced design complexity, flexibility and more features than those offered by most discrete solutions.
The Fusion PSC includes unique calibration coefficients preloaded into the device. For customers who require accuracy levels better than 1%, the new two-point calibration scheme leverages several unique features available in the PSC. The programmable logic and the analog quad measure the offset and gain coefficients. The embedded Flash memory blocks store offset and gain coefficients during test. The soft calibration IP core made of logic gates accesses the coefficients and applies them to the measurements in real time to achieve the highest level of accuracy.
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