A low energy adc

H - Electricity – 03 – M

Patent

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Details

H03M 1/34 (2006.01) H03M 1/00 (2006.01) H03M 1/12 (2006.01)

Patent

CA 2359677

The present invention relates to a parallel analog to digital converter (ADC) that includes at least two A/D channels which have an input and an output, where the analog input signal is converter to a digital output signal, and where each of the inputs of the A/D channels is coupled to a sample and hold unit, a multiplexing unit which includes at least two inputs, where each of the inputs is coupled to the output of the A/D channel, a time control unit for clocking the A/D channels and for controlling the multiplexing unit, wherein the analog to digital converter is provided with means for switching between a so-called idle mode and a so-called normal mode. The invention also relates to a method of saving energy in parallel analog to digital conversion.

La présente invention concerne un convertisseur analogique-numérique (CAN) parallèle comprenant au moins deux canaux A/N présentant une entrée et une sortie, et dans lequel le signal d'entrée analogique est converti en signal de sortie numérique, chaque entrée des canaux A/N étant couplée à un dispositif d'échantillonnage et de retenue. Le convertisseur analogique-numérique comprend également une unité de multiplexage incluant au moins deux entrées couplées chacune à la sortie du canal A/N, une unité de chronométrage pour chronométrer les canaux A/N et contrôler l'unité de multiplexage, le convertisseur analogique-numérique étant équipé d'un mécanisme lui permettant de commuter entre un mode soi-disant repos et un mode soi-disant normal. L'invention concerne en outre un procédé qui assure une économie d'énergie pendant une conversion analogique-numérique parallèle.

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