A digitally-assisted sensor interface for biomedical applications
Acompact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and digital design to reduce system area and power, while making the system more robust to interferers. Anti-aliasing is achieved using a charge-sampling filter with a sinc fre...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
Institute of Electrical and Electronics Engineers
2012
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| Online Access: | http://hdl.handle.net/1721.1/71833 https://orcid.org/0000-0002-5977-2748 |
| Summary: | Acompact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and digital design to reduce system area and power, while making the system more robust to interferers. Anti-aliasing is achieved using a charge-sampling filter with a sinc frequency response and programmable gain. A mixed-signal feedback loop creates a sharp, programmable notch for interference cancelation. A prototype was implemented in 0.18 μm CMOS and the on-chip blocks consume a total of 255 nW - 2.5 μW from a 1.5 V supply depending on noise and bandwidth requirements. |
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