- ELECTRONICS LETTERS Journal
- April 2009
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- A novel multibit continuous time sigma-delta modulator architecture that does not require a flash converter is presented. The quantiser of this modulator is similar to an integrating ADC that is operated with a binary weighted charge balancing algorithm. The charge residue in the integrating ADC at the end of each conversion cycle is accumulated for the next conversion, providing first-order noise shaping. The modulator order can be increased by the addition of more integrating stages.