| IP개요 |
Wearable healthcare systems require measurements from electrocardiograms (ECGs) and photoplethysmograms (PPGs), and the blood pressure of the user. This paper presents low noise PPG signal acquisition integrated circuit (IC) with DC servo loop that can measure PPG signal for wearable healthcare applications. The analog output from PPG signal is converted to digital signal us-ing 12-bit successive approximation register (SAR) analog-to-digi-tal converter (ADC). The total current consumption for the proposed IC is 340 μA with a 1.8 V supply. |
