Recently, the IEEE Journal of Solid-State Circuits (JSSC) has published three significant research outcomes in integrated circuit design from the Biological Circuits and Systems Laboratory (BiCASL). This lab is under the leadership of Professor Wang Guoxing at the School of Integrated Circuits, Shanghai Jiao Tong University. The first breakthrough is a wireless body area network communication transceiver chip renowned for its high energy efficiency. It incorporates a compact adaptive equalization technique to facilitate low-power communication. The second achievement is an integrated PPG acquisition chip built on thin-film transistors. It leverages a time-domain digital-intensive analog signal chain design, enabling versatile health monitoring capabilities. The third innovation is a high energy-efficiency optical Time-of-Flight (ToF) sensing interface integrated chip tailored for frequency-domain brain functional imaging. This chip employs a dynamic optical sensing architecture to significantly boost link energy efficiency.