Title :
A Sub 1V 96 μW Fully Operational Digital Hearing Aid Chip With Internal Status Controller
Author :
Kim, Sunyoung ; Cho, Namjun ; Song, Seong-Jun ; Kim, Donghyun ; Kim, Kwanho ; Yoo, Hoi-Jun
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
A low power fully operational digital hearing aid chip is proposed and implemented. The Sigma-Delta ADC adopts the status controller to realize adaptive SNR technique without any external control. To achieve both low power consumption and high programmability, dedicated low power DSP with 6 control parameters is designed. The heterogeneous Sigma-Delta DAC reduces more power dissipation without performance degradation. The digital hearing aid system is fabricated in 0.18 mum CMOS technology, consumes less than 96 muW and has a die size of 2.8 mm times 1.1 mm
Keywords :
CMOS digital integrated circuits; controllers; hearing aids; low-power electronics; sigma-delta modulation; 0.18 micron; CMOS technology; adaptive SNR technique; digital hearing aid chip; digital hearing aid system; internal status controller; low power DSP; low power electronics; sigma-delta ADC; sigma-delta DAC; Adaptive control; Auditory system; Clocks; Digital signal processing; Digital signal processing chips; Energy consumption; Finite impulse response filter; Frequency; Power dissipation; Programmable control;
Conference_Titel :
Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European
Conference_Location :
Montreux
Print_ISBN :
1-4244-0303-0
DOI :
10.1109/ESSCIR.2006.307573
