An Injectable 64 nW ECG Mixed-Signal SoC in 65 nm for Arrhythmia Monitoring

作者：Chen Yen Po^*; Jeon Dongsuk; Lee Yoonmyung; Kim Yejoong; Foo Zhiyoong; Lee Inhee; Langhals Nicholas B; Kruger Grant; Oral Hakan; Berenfeld Omer; Zhang Zhengya; Blaauw David; Sylvester Dennis

来源：IEEE Journal of Solid-State Circuits, 2015, 50(1): 375-390.

DOI：10.1109/JSSC.2014.2364036

• Analog front-end (AFE)
• asynchronous logic
• capacitive feedback chopper stabilized instrumental amplifier (CCIA)
• electrocardiography (ECG)
• fast Fourier transform (FFT)
• implantable system
• kickback noise
• minimum energy point (MEP)
• mm(3)

A syringe-implantable electrocardiography (ECG) monitoring system is proposed. The noise optimization and circuit techniques in the analog front-end (AFE) enable 31 nA current consumption while a minimum energy computation approach in the digital back-end reduces digital energy consumption by 40%. The proposed SoC is fabricated in 65 nm CMOS and consumes 64 nW while successfully detecting atrial fibrillation arrhythmia and storing the irregular waveform in memory in experiments using an ECG simulator, a live sheep, and an isolated sheep heart.

• 出版日期2015-1