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A flexible ADC for a multi-band and multi-mode transceiver is presented. It can be reconfigured between pipeline and DeltaSigma architectures for power optimum operation in WLAN/WiMAX and GSM/CDMA2000/WCDMA, respectively. A maximum dynamic range of 76 dB with less than 1 mW at 1.2 V supply was achieved using voltage scaling and closed-loop opamp design techniques. The prototype was built in 0.13 mum...
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