Title :
A 4mW per-Channel 101dB-DR Stereo Audio DAC with Transformed Quantization Structure
Author :
Lee, Yong-Hee ; Choi, Moo-Yeol ; You, Seung-Bin ; Yeum, Wang-Seup ; Park, Ho-Jin ; Kim, Jae-Whui
Author_Institution :
Samsung Electron. Co. Ltd., Yongin
Abstract :
A 2.7V 4mW per-channel 20-bit 48kS/s sigma-delta stereo audio DAC, integrated in a 0.13mum CMOS technology, achieves a dynamic range (DR) of 101dB and occupies an active die area of 0.82mm2. The transformed quantization technique is proposed to decrease tonal behavior generated in low order sigma-delta modulator and the circuit is implemented to operate with optimal current consumption. The measured SNR and peak SNDR are 102dB and 95dB, respectively
Keywords :
CMOS integrated circuits; audio equipment; digital-analogue conversion; quantisation (signal); sigma-delta modulation; 0.13 micron; 2.7 V; 20 bit; 4 mW; CMOS technology; low order sigma-delta modulator; optimal current consumption; sigma-delta stereo audio DAC; transformed quantization structure; transformed quantization technique; Amplitude modulation; CMOS technology; Circuits; Energy consumption; Frequency; IIR filters; Low pass filters; Noise shaping; Quantization; Signal to noise ratio;
Conference_Titel :
Custom Integrated Circuits Conference, 2006. CICC '06. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
1-4244-0075-9
Electronic_ISBN :
1-4244-0076-7
DOI :
10.1109/CICC.2006.320853
