Autor: |
Markus Schimper, Georgi Panov, E. Riccio, L. Dorrer |
Rok vydání: |
2004 |
Předmět: |
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Zdroj: |
Proceedings of the 30th European Solid-State Circuits Conference. |
DOI: |
10.1109/esscir.2004.1356648 |
Popis: |
A continuous-time 4th-order multi-bit /spl Sigma//spl Delta/-modulator for GSM/EDGE is presented. By introduction of a direct feed-forward path from the input to the quantiser, high immunity to adjacent channel interferers is achieved. The dynamic range is 90 dB (>14-bit) over a 240 kHz signal bandwidth. Accurate modelling allows optimisation of excess loop delay, thus yielding a very low power consumption of 3 mW at 1.25 V supply voltage. The modulator is clocked at 26 MHz (oversampling ratio=54). It occupies 0.5 mm/sup 2/ in a 0.13 /spl mu/m CMOS technology. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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