Title :
A 0.8V, 88dB Dual-Channel Audio /spl Delta//spl Sigma/ DAC with Headphone Driver
Author :
Meng, Qingdong ; Lee, Kyehyung ; Sugimoto, Tetsuro ; Hamashita, Koichi ; Takasuka, Kaoru ; Takeuchi, Seiji ; Moon, Un-Ku ; Temes, Gabor C.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR
Abstract :
A 0.8V 3rd-order DeltaSigma DAC with headphone driver is presented. The circuit requires only one opamp per channel, shared by the internal DAC, the FIR and 2nd-order Sallen-Key low-pass filter, as well as by the headphone driver. The prototype IC implemented in a 0.35mum CMOS process achieved 88dB dynamic range (DR), while consuming 2.6mW from a 0.8V supply
Keywords :
CMOS integrated circuits; FIR filters; digital-analogue conversion; headphones; integrated circuit design; low-pass filters; 0.35 micron; 0.8 V; 2.6 mW; CMOS process; DeltaSigma DAC; FIR; Sallen-Key low-pass filter; dual-channel audio; headphone driver; integrated circuit implementation; internal DAC; Clocks; Dynamic range; Feedback loop; Finite impulse response filter; Hardware; Headphones; Low pass filters; Noise shaping; Switches; Voltage;
Conference_Titel :
VLSI Circuits, 2006. Digest of Technical Papers. 2006 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0006-6
DOI :
10.1109/VLSIC.2006.1705308
