SMASH Delta-Sigma Modulator with Adderless Feed-forward Loop Filter

A novel cascade modulator, which combines the benefits of SMASH topology and feed-forward loop filter, is presented in this letter. The proposed architecture is based on moving the powerhungry adder block from the quantizer input to the first integrator output. The proposed architecture shows a bett...

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Detalles Bibliográficos
Autores: Honarparvar, M., Rosa, José M. de la, Nabki, F., Sawan, M.
Tipo de recurso: otro
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/157552
Acceso en línea:http://hdl.handle.net/10261/157552
Access Level:acceso abierto
Descripción
Sumario:A novel cascade modulator, which combines the benefits of SMASH topology and feed-forward loop filter, is presented in this letter. The proposed architecture is based on moving the powerhungry adder block from the quantizer input to the first integrator output. The proposed architecture shows a better OTA linearity and relaxed OTA DC-gain compared to conventional MASH and SMASH topologies. This feature makes the modulator topology more suitable than conventional MASH and SMASH topologies for low-voltage applications.