title: A configurable and low-power mixed signal SoC for portable ECG monitoring applications.
abstract: This paper describes a mixed-signal ECG System-on-Chip (SoC) that is capable of implementing configurable functionality with low-power consumption for portable ECG monitoring applications. A low-voltage and high performance analog front-end extracts 3-channel ECG signals and single channel electrode-tissue-impedance (ETI) measurement with high signal quality. This can be used to evaluate the quality of the ECG measurement and to filter motion artifacts. A custom digital signal processor consisting of 4-way SIMD processor provides the configurability and advanced functionality like motion artifact removal and R peak detection. A built-in 12-bit analog-to-digital converter (ADC) is capable of adaptive sampling achieving a compression ratio of up to 7, and loop buffer integration reduces the power consumption for on-chip memory access. The SoC is implemented in 0.18 μm CMOS process and consumes 32 μ W from a 1.2 V while heart beat detection application is running, and integrated in a wireless ECG monitoring system with Bluetooth protocol. Thanks to the ECG SoC, the overall system power consumption can be reduced significantly.
authors.forename: Hyejung
authors.initials: H
authors.lastname: Kim
authors.forename: Sunyoung
authors.initials: S
authors.lastname: Kim
authors.forename: Nick
authors.initials: N
authors.lastname: Van Helleputte
authors.forename: Antonio
authors.initials: A
authors.lastname: Artes
authors.forename: Mario
authors.initials: M
authors.lastname: Konijnenburg
authors.forename: Jos
authors.initials: J
authors.lastname: Huisken
authors.forename: Chris
authors.initials: C
authors.lastname: Van Hoof
authors.forename: Refet Firat
authors.initials: RF
authors.lastname: Yazicioglu
mesh_terms: D016477:Artifacts; D004562:Electrocardiography / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D056656:Lab-On-A-Chip Devices; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*