Bandpass sigma-delta analog-to-digital converter and mash...

Details Bandpass sigma-delta analog-to-digital converter and mash... Bandpass sigma-delta analog-to-digital converter and mash...

H - Electricity

03

M

H03M 3/04 (2006.01)

Patent

CA 2450702

The invention concerns a passband Sigma-Delta analog-to-digital converter comprising a first resonator (101) and a second order second resonator (102), preferably of second order, whereof the respective central frequencies are adjustable, so as to enable a high SNR in a relatively wide frequency band, and a MASH Sigma-Delta analog-to-digital converter incorporating at least two such cascaded converters.

L'invention propose un convertisseur analogique-numérique Sigma-Delta passe- bande comprenant un premier résonateur (101) et un second résonateur du second ordre (102), préférentiellement du second ordre, dont les fréquences centrales respectives sont ajustables, de manière à permettre un SNR élevé dans une bande de fréquence relativement large, ainsi qu'un convertisseur analogique- numérique Sigma-Delta MASH incorporant au moins deux tels convertisseurs cascadés.

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