Oversampling sigma-delta modulator

Details Oversampling sigma-delta modulator Oversampling sigma-delta modulator

1997-08-13

1999-02-09

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, 341144, H03M 300

Patent

active

058700480

ABSTRACT:
Based on the recently developed MASH (multistage noise shaping) architecture, an improved architecture--uni-MASH which employs the time-division concept for architecture and circuit reuse is proposed. An oversampling sigma-delta modulator having uni-MASH architecture uses a single stage of time- and capacitor-integrator in lieu of multiple stages of integrators, digital-to-analog converters and quantizers used in the MASH architecture. Uni-MASH retains robust stability and high-ordered noise shaping factor of MASH's virtues.

REFERENCES:
patent: 4704600 (1987-11-01), Uchimura et al.
patent: 5274375 (1993-12-01), Thompson
patent: 5323157 (1994-06-01), Ledzius et al.

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