A 375 mW, 2.2 GHz signal bandwidth DAC-based transmitter with an in-band IM3 < −58 dBc in 40 nm CMOS

Silvian Spiridon,Johan van der Tang,Han Yan,Hua-Feng Chen

ESSCIRC（2012）

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摘要

A 40 nm DAC-based CMOS wideband transmitter (WBTX) for cable applications is presented. It has a 2.2 GHz signal bandwidth and exhibits an in-band IM3 of less than -58 dBc. The WBTX consists of a current-steering DAC with digital sinc equalization and roll-off compensation. By implementing high-speed, feed-forward pipelined digital logic, the DAC sampling rate extends to 5 GHz. The WBTX can deliver up to +11 dBm of output power while consuming only 375 mW. The WBTX occupies 1.65 mm2 of area.

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关键词

cmos analogue integrated circuits,cables (electric),digital-analogue conversion,equalisers,feedforward,pipeline arithmetic,transmitters,dac sampling rate,dac-based cmos wideband transmitter,wbtx,bandwidth 2.2 ghz,bandwidth 5 ghz,cable application,current-steering dac,digital sinc equalization,feed-forward pipelined digital logic,high-speed pipelined digital logic,in-band im3,power 375 mw,roll-off compensation,signal bandwidth,size 40 nm,bandwidth,decoding,linearity,cmos integrated circuits

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