Title :
A 110dB SNR and 0.5mW current-steering audio DAC implemented in 45nm CMOS
Author :
Hezar, Rahmi ; Risbo, L. ; Kiper, H. ; Fares, M. ; Haroun, Baher ; Burra, G. ; Gomez, Gerardo
Author_Institution :
Texas Instrum., Dallas, TX, USA
Abstract :
An oversampled cascaded-modulator audio DAC architecture to reduce out-of-band noise is presented. Pulse-width modulation combined with an analog-FIR filter is used to reduce the impact of circuit mismatch and dynamic glitch errors. Implemented in 45 nm CMOS as a current-steering DAC, the 0.045 mm2 chip delivers 110 dB DR while consuming 0.5 mW.
Keywords :
CMOS integrated circuits; FIR filters; digital-analogue conversion; pulse width modulation; CMOS; analog-FIR filter; current-steering audio DAC; noise figure 110 dB; oversampled cascaded-modulator audio DAC; power 0.5 mW; pulse-width modulation; size 45 nm; Circuit noise; Clocks; Digital modulation; Filtering; Finite impulse response filter; Frequency; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Signal resolution;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5433891
