Byungki Han, Jongwoo Lee, Seunghyun Oh, Jaekwon Kim, Eswar Mamidala, T. Cho
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A 14nm FinFET analog baseband SOC for multi-mode cellular applications with tri-band carrier aggregation
This paper presents a power and area efficient ABB solution implemented in 14nm FinFET process for a cellular baseband SOC which supports tri-band RX CA and dual-band TX CA. 12bit RXADCs are implemented using ADC reference sharing capacitor with sampling rate up to 150MS/s for a single-LO contiguous intra-band CA. An oversampling SAR architecture provides reconfigurable mode and effective blocker sensing up to Nyquist bandwidth. 12bit TXDACs support up to 250MS/s speed with more than 80dB SFDR. A common-mode calibration technique is proposed to provide effective matching between TXDAC and RF transmitter.
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