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This paper presents a digital-IF QAM coherent demodulator implemented on 0.11-mm2 die area. Two independent resampling circuits with second-order digital tracking loops are employed in order to achieve both the carrier and timing recoveries. A coherent demodulator with complete digital synchronization functions achieves a bit-error rate of 10-6 with an implementation loss of 0.6 dB for uncoded 16-QAM signal. It consumes 16 mW with a 1.8-V supply, working in 80 MHz.