Autor: |
D. Gevaert, J. Nedved, J. Vanneuville, Jan Sevenhans |
Rok vydání: |
1995 |
Předmět: |
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Zdroj: |
IEEE Journal of Solid-State Circuits. 30:819-822 |
ISSN: |
0018-9200 |
Popis: |
This paper describes the design and measurement results of a 1-b A/D converter based on a transistor-only switched current (SI) second-order sigma-delta modulator. The 1-b A/D converter was simulated and processed in ES2 1.5 /spl mu/m CMOS technology. The second-order filter is based on class AB switched current-integrators. The analog current memory cells in the integrator are optimized for linear operation with a strong class AB overlap region to avoid class B operation and cross-over distortion. Measurement results on the first silicon performing 11-b resolution show that this circuit technique is promising for speech CODEC A/D conversion. > |
Databáze: |
OpenAIRE |
Externí odkaz: |
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