In:
International Journal of Modern Physics B, World Scientific Pub Co Pte Ltd, Vol. 27, No. 26 ( 2013-10-20), p. 1350159-
Abstract:
For the purpose of biomagnetic measurements, a magnetic sensor chip is manufactured using a 0.18 μm complementary metal–oxide–semiconductor (CMOS) process. A high-inductance coil and an instrumentation amplifier (IA) are embedded on this chip. The embedded high-inductance coil sensor contains suitable sensitivity and bandwidth for biomagnetic measurements, and is designed via electromagnetic field simulation. A low-g m operational transconductance amplifier (OTA) is also implemented on the chip to reduce the transconductance value. The output signal sensitivity of the magnetic sensor chip is 3.25 fT/μV, and the output reference noise is [Formula: see text] . The instrumentation amplifier is designed to minimize the magnetic signal noise using current feedback and a band-pass filter (BPF) with a bandwidth between 0.5 kHz and 5 kHz. The common-mode rejection ratio (CMRR) is measured at 117.5 dB by the Multi-Project Chip test. The proposed magnetic sensor chip is designed such that the input reference noise is maintained below 0.87 μV.
Type of Medium:
Online Resource
ISSN:
0217-9792
,
1793-6578
DOI:
10.1142/S0217979213501592
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2013
detail.hit.zdb_id:
2086681-1
detail.hit.zdb_id:
246716-1
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