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

Majid, Abdul; Waheed Malik, Abdul

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

Sinopsis

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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Reseña del editor

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

Biografía del autor

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.

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Editorial
LAP LAMBERT Academic Publishing
Año de publicación
2010
Idioma
Inglés
ISBN 10 
383830070X
ISBN 13 
9783838300702
Encuadernación
Tapa blanda
Número de páginas
64
Contacto del fabricante
no disponible
Persona responsable
no disponible