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

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

A low-power energy-efficient adaptive analog front-end circuit is proposed and implemented for digital hearing-aid applications. It adopts the combined-gain-control (CGC) technique for accurate preamplification and the adaptive-SNR (ASNR) technique to improve dynamic range with low power consumption...

Täydet tiedot

Bibliografiset tiedot
Julkaisussa:IEEE Journal of solid state circuits 41, 4 (2006).
Päätekijä: Sunyoung Kim
Aineistotyyppi: Artikkeli
Kieli:English
Aiheet:
0.25 micron.
0.9 V.
59.4 muW.
74.7 muW.
CMOS technology.
Adaptive SNR technique.
Analog front-end circuit.
Automatic gain control.
Combined-gain-control technique.
Digital hearing aid chip.
Exponential gain control.
Input-referred noise voltage.
Signal-to-noise ratio.
Third-order sigma-delta modulator.
Threshold knee voltage.