Title :
A 375 mW, 2.2 GHz signal bandwidth DAC-based transmitter with an in-band IM3 < −58 dBc in 40 nm CMOS
Author :
Spiridon, Silvian ; Van der Tang, Johan ; Yan, Han ; Chen, Hua-Feng
Author_Institution :
Broadcom Corp., Bunnik, Netherlands
Abstract :
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.
Keywords :
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; CMOS integrated circuits; Clocks; Decoding; Linearity; Power demand; Transmitters;
Conference_Titel :
ESSCIRC (ESSCIRC), 2012 Proceedings of the
Conference_Location :
Bordeaux
Print_ISBN :
978-1-4673-2212-6
Electronic_ISBN :
1930-8833
DOI :
10.1109/ESSCIRC.2012.6341256
