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A 14b 750MS/s 21.1mW current steering digital-to-analog converter (DAC) is presented, which maintains <-168dBm/Hz noise spectral density beyond the Nyquist frequency to minimize TX leakage in SAW-less FDD LTE. A hybrid wideband R-2R LSB segmentation with an impedance attenuator minimizes glitch noise across process and temperature without requiring accurate scaling of switches and switch drivers...
In many wireless systems, the transmit (TX) signal could leak to the receiver input through the antenna duplexer, and this leakage could raise the noise level in the receive (RX) band. Therefore, it is important to be able to accurately predict the noise spectrum that leaks into the RX band from a TX digital-to-analog converter (DAC) in order to optimize the noise performance. This study analyzes...
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