Design and Implementation of a DDFS using Sum of Weighted Bit Products: Digital Frequency Synthesis - Couverture souple

Majid, Abdul; Waheed Malik, Abdul

 
9783838300702: Design and Implementation of a DDFS using Sum of Weighted Bit Products: Digital Frequency Synthesis
Couverture souple
ISBN 10 : 383830070X ISBN 13 : 9783838300702
Editeur : LAP LAMBERT Academic Publishing, 2010

Synopsis

Direct Digital Frequency Synthesis (DDFS) is a method of producing an analog waveform by generating a time-varying signal in digital form, succeeded by digital-to-analog reconstruction. Different control words are used by the DDFS system in order to generate different frequencies. The control word is successively added to the previous value in a 20-bit accumulator. Nine most significant bits out of these twenty bits are used for the DAC. HCMOS 9 (130 nm) ST Microelectronics process is used by employing high speed NMOS and PMOS transistors. The bit products (control signals) are computed by using complementary static CMOS logic which then act as control signals for the current sources after passing through D-flip flops. Practical design issues of current sources and parts of digital logic were studied and implemented using the Cadence full-custom design environment

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Présentation de l'éditeur

Direct Digital Frequency Synthesis (DDFS) is a method of producing an analog waveform by generating a time-varying signal in digital form, succeeded by digital-to-analog reconstruction. Different control words are used by the DDFS system in order to generate different frequencies. The control word is successively added to the previous value in a 20-bit accumulator. Nine most significant bits out of these twenty bits are used for the DAC. HCMOS 9 (130 nm) ST Microelectronics process is used by employing high speed NMOS and PMOS transistors. The bit products (control signals) are computed by using complementary static CMOS logic which then act as control signals for the current sources after passing through D-flip flops. Practical design issues of current sources and parts of digital logic were studied and implemented using the Cadence full-custom design environment

Biographie de l'auteur

Mr. Abdul Majid and Mr. Abdul Waheed Malik have completed their MS from Linköping University Sweden in Year 2009. Presently they are doing their PhD at Mid Sweden University Sundsvall.

Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.

Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2010
Langue
anglais
ISBN 10 
383830070X
ISBN 13 
9783838300702
Reliure
Broché
Nombre de pages
64
Coordonnées du fabricant
non disponible
Personne responsable
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