An adpative ΣΔ modulator for multi-standard hand-held wireless devices
This paper describes the design and experimental characterization of a 130-nm CMOS cascade ΣΔ modulator intended for multi-standard wireless telecom systems. Both architectural- and circuital-level reconfiguration strategies are incorporated in the chip in order to adapt its performance to different...
| Authors: | , , |
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| Format: | article |
| Publication Date: | 2007 |
| Country: | España |
| Institution: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repository: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/3764 |
| Online Access: | http://hdl.handle.net/10261/3764 |
| Access Level: | Open access |
| Keyword: | Adaptive Circuits Sigma-Delta Modulators Multi-Standard wireless devices |
| Summary: | This paper describes the design and experimental characterization of a 130-nm CMOS cascade ΣΔ modulator intended for multi-standard wireless telecom systems. Both architectural- and circuital-level reconfiguration strategies are incorporated in the chip in order to adapt its performance to different standard specifications with optimized power dissipation. Measurements show a correct operation for GSM/Bluetooth/WCDMA standards, featuring a dynamic range of 86.7/81.0/63.3dB and a peak signal-to-(noise+distortion) ratio of 74.0/68.4/52.8dB within 200kHz/1MHz/4MHz, respectively. The power consumption is 25.2/25.0/44.5mW, of which 11.0/10.5/24.8 are due to the analog part of the circuit. |
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