A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation
A compact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and mixed-signal feedback to reduce system area and power, while making the system more robust to interferers. Antialiasing is achieved using a charge-sampling filter with a s...
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| Veröffentlicht in: | IEEE journal of solid-state circuits 2011-04, Vol.46 (4), p.746-756 |
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| container_end_page | 756 |
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| container_issue | 4 |
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| container_title | IEEE journal of solid-state circuits |
| container_volume | 46 |
| creator | Bohorquez, J L Yip, M Chandrakasan, A P Dawson, J L |
| description | A compact, low-power, digitally-assisted sensor interface for biomedical applications is presented. It exploits oversampling and mixed-signal feedback to reduce system area and power, while making the system more robust to interferers. Antialiasing 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 cancellation. A prototype was implemented in a 0.18-μm CMOS process. The on-chip blocks operate from a 1.5-V supply and consume between 255 nW and 2.5 μW depending on noise and bandwidth requirements. |
| doi_str_mv | 10.1109/JSSC.2011.2108128 |
| format | Article |
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It exploits oversampling and mixed-signal feedback to reduce system area and power, while making the system more robust to interferers. Antialiasing 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 cancellation. A prototype was implemented in a 0.18-μm CMOS process. The on-chip blocks operate from a 1.5-V supply and consume between 255 nW and 2.5 μW depending on noise and bandwidth requirements.</description><subject>Antialiasing</subject><subject>Applied sciences</subject><subject>Bandwidth</subject><subject>biomedical</subject><subject>Cancellation</subject><subject>Circuits</subject><subject>CMOS</subject><subject>Consumption</subject><subject>Design. Technologies. Operation analysis. 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| source | IEEE Electronic Library (IEL) |
| subjects | Antialiasing Applied sciences Bandwidth biomedical Cancellation Circuits CMOS Consumption Design. Technologies. Operation analysis. Testing digitally-assisted Electronics Exact sciences and technology Feedback loops Gain General equipment and techniques Instruments, apparatus, components and techniques common to several branches of physics and astronomy Integrated circuits Interference Interference cancellation low-noise instrumentation medical implants mixed-signal feedback Noise Oversampling Physics power line interference Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Sensors Sensors (chemical, optical, electrical, movement, gas, etc.) remote sensing sinc filter System-on-a-chip Transfer functions |
| title | A Biomedical Sensor Interface With a sinc Filter and Interference Cancellation |
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