Mixed-signal VLSI independent component analyzer for hearing aid applications

2014 ◽  
Author(s):  
Shuo Li ◽  
Milutin Stanacevic
Keyword(s):  
Hearing Aid ◽  
Independent Component ◽  
Mixed Signal

scholarly journals A Mixed-Signal Programmable Time-Division Power-On-Reset and Volume Control Circuit for High-Resolution Hearing-Aid SoC Application

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Chengying Chen ◽  
Liming Chen ◽  
Jun Yang
Keyword(s):  
Low Power ◽  
Control Function ◽  
Hearing Aid ◽  
Sar Adc ◽  
Volume Control ◽  
Cmos Process ◽  
Mixed Signal ◽  
Analog To Digital ◽  
Power Application ◽  
Time Division

A mixed-signal programmable Time-Division Power-On-Reset (TD-POR) circuit based on 8-bit Successive Approximation Analog-to-Digital Converter (SAR ADC) for accurate control in low-power hearing-aid System on Chip (SoC) is presented in this paper. The end-of-converter (EOC) signal of SAR ADC is used as the mode-change signal so that the circuit can detect the battery voltage and volume voltage alternately. And the TD-POR circuit also has brown-out reset (BOR) detection capability. Through digital logic circuit, the POR, BOR threshold, and delay time can be adjusted according to the system requirement. The circuit is implemented in SMIC 0.13 μm 1P8M CMOS process. The measurement results show that, in 1 V power supply, the POR, BOR, and volume control function are accomplished. The detection resolution is the best among previous work. With 120 Hz input signal and 15 kHz clock, the ADC shows that Signal to Noise plus Distortion Ratio (SNDR) is 46.5 dB and Effective Number Of Bits (ENOB) is 7.43 bits. Total circuit power consumption is only 86 μw for low-power application.

A 1.1-V 270-μA mixed-signal hearing aid chip

2002 ◽  
Vol 37 (12) ◽  
pp. 1670-1678 ◽  
Author(s):  
D.G. Gata ◽  
W. Sjursen ◽  
J.R. Hochschild ◽  
J.W. Fattaruso ◽  
L. Fang ◽  
...  
Keyword(s):  
Hearing Aid ◽  
Mixed Signal

A 1V, 1.1mW mixed-signal hearing aid SoC in 0.13μm CMOS process

2016 ◽  
Author(s):  
Chengying Chen ◽  
Liming Chen ◽  
Jun Fan ◽  
Zenghui Yu ◽  
Jun Yang ◽  
...  
Keyword(s):  
Hearing Aid ◽  
Cmos Process ◽  
Mixed Signal
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