✦ LIBER ✦
An 80-MHz, 14-bit bandpass mash sigma–delta/pipeline A/D converter with 5 MHz bandwidth for third generation mobile communication systems
✍ Scribed by S. Marabelli; A. Fornasari; P. Malcovati; F. Maloberti
- Book ID
- 104047325
- Publisher
- Elsevier Science
- Year
- 2005
- Tongue
- English
- Weight
- 238 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0263-2241
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✦ Synopsis
In this paper a bandpass MASH (multi-stage noise shaping) sigma-delta (RD) modulator is presented. A SNR (signal to noise ratio) of at least 85 dB (equivalent to a resolution of 14 bits) has been achieved over a 5 MHz band around an intermediate frequency (IF) of 20 MHz using a clock frequency of 80 MHz. This performance is obtained using a sixth order bandpass RD modulator followed by a 10 bit pipeline converter. The proposed circuit has been extensively simulated, both at behavioral and at circuit level, and results are reported.