An energy-efficient analog front-end circuit for a sub-1V digital hearing aid chip

2005 ◽  
Author(s):  
Sunyoung Kim ◽  
Jae-Youl Lee ◽  
Seong-Jun Song ◽  
Namjun Cho ◽  
Hoi-Jun Yoo
Keyword(s):  
Energy Efficient ◽  
Hearing Aid ◽  
Front End ◽  
Analog Front End ◽  
Digital Hearing Aid

An Energy-Efficient Analog Front-End Circuit for a Sub-1-V Digital Hearing Aid Chip

2006 ◽  
Vol 41 (4) ◽  
pp. 876-882 ◽  
Author(s):  
S. Kim ◽  
J.-Y. Lee ◽  
S.-J. Song ◽  
N. Cho ◽  
H.-J. Yoo
Keyword(s):  
Energy Efficient ◽  
Hearing Aid ◽  
Front End ◽  
Analog Front End ◽  
Digital Hearing Aid

A 1.2 V 285μA analog front end chip for a digital hearing aid in 0.13 μm CMOS

2013 ◽  
Author(s):  
Amrith Sukumaran ◽  
Kunal Karanjkar ◽  
Sandeep Jhanwar ◽  
Nagendra Krishnapura ◽  
Shanthi Pavan
Keyword(s):  
Hearing Aid ◽  
Front End ◽  
Analog Front End ◽  
Digital Hearing Aid

A Low Power, High Performance Analog Front-End Circuit for 1 V Digital Hearing Aid SoC

2014 ◽  
Vol 34 (5) ◽  
pp. 1391-1404 ◽  
Author(s):  
Chengying Chen ◽  
Jun Fan ◽  
Xiaoyu Hu ◽  
Yong Hei
Keyword(s):  
Low Power ◽  
High Performance ◽  
Hearing Aid ◽  
Front End ◽  
Analog Front End ◽  
Digital Hearing Aid

A Charge Amplifier Based Complementary Metal–Oxide–Semiconductor Analog Front End for Piezoelectric Microphones in Hearing Aid Devices

2019 ◽  
Vol 15 (3) ◽  
pp. 315-322
Author(s):  
Manu Chilukuri ◽  
Sungyong Jung ◽  
Hoon-Ju Chung
Keyword(s):  
Hearing Aid ◽  
Complementary Metal Oxide Semiconductor ◽  
Low Noise ◽  
Oxide Semiconductor ◽  
Cmos Process ◽  
Charge Amplifier ◽  
Front End ◽  
Analog Front End ◽  
A Charge ◽  
Cascode Current Mirror

In this paper, a low noise and low power analog front end for piezoelectric microphones used in hearing aid devices is presented. It consists of a Charge Amplifier, followed by a Variable Gain Amplifier and an Analog-to-Digital Converter. At the core of charge amplifier a two stage opamp with modified cascode current mirror is designed which achieves a gain of 93 dB and phase margin of 62°. Designed analog front end achieves an input referred noise of 0.12 μVrms and SNR of 74 dB. It consumes power of 430 μW from 1.8 V supply and occupies an area of 1.2 mm × 0.22 mm. Proposed circuit is designed and fabricated in 0.18 μm CMOS process. Designed circuit is interfaced with a sensor model of piezoelectric microphone, which mimics Ormia ochracea's auditory system, and its performance is successfully verified against simulation results.

A MEMS-Based Power-Scalable Hearing Aid Analog Front End

2011 ◽  
Vol 5 (3) ◽  
pp. 201-213 ◽  
Author(s):  
Ilker Deligoz ◽  
Syed R. Naqvi ◽  
Tino Copani ◽  
Sayfe Kiaei ◽  
Bertan Bakkaloglu ◽  
...  
Keyword(s):  
Hearing Aid ◽  
Front End ◽  
Analog Front End

scholarly journals Switched-Capacitor Based Preamplifier Circuit for Hearing Aid Devices

2021 ◽  
Vol 19 (2) ◽  
pp. 115
Author(s):  
PRABHAT KUMAR BARIK ◽  
Kanhu Charan Bhuyan
Keyword(s):  
High Frequency ◽  
Energy Efficient ◽  
Hearing Aid ◽  
Total Power ◽  
Frequency Noise ◽  
Switched Capacitor ◽  
Front End ◽  
Wide Range ◽  
Total Power Consumption ◽  
Conventional Type

This paper presents the design of Preamplifier circuit for hearing aid in conventional and switched-capacitor based. The proposed circuit achieves good linearity in a wide range of frequency for amplification as compared with conventional type. The total power consumption of proposed preamplifier is 5.23fW. Undesired out-band high frequency noise can be removed by the proposed preamplifier circuit before connecting to ADC of front-end hearing aid. The front-end hearing aid device occupies less area and energy efficient. The simulation of design is done by LT SPICE-IV software.

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