Shim, Shinyong Sung, Jaehoon Kim, Sung June 2024-01-19T14:02:34Z 2024-01-19T14:02:34Z 2022-04-21 2021-08 1598-1657 https://pubs.kist.re.kr/handle/201004/116605 A biphasic pulse generator integrated circuit (IC) was designed, and the parameters of the generated pulses such as pulse rate, duration, and amplitude were adjusted to the desired values by using the time-varying differences of two inputs of the operational amplifier integrated on the IC. The chip was fabricated with the MagnaChip /SK Hynix CMOS 0.35 mu m process, which allowed a maximum pulse amplitude of 3.3 V. In addition, it included a transformer that allowed the IC to rectify the amplitude modulated (AM) input with a 1 Ghz carrier and provide the supply voltage to generate the pulses. The whole size of the full system was 441.5 mu m x527.8 mu m, and the system successfully generates biphasic pulses up to 1.2 kHz using the RF signal. This circuit can be used to generate biphasic pulses with variable parameters for distributed neural interfaces, and to provide scan voltages for potentiostat applications such as in the Fast Scan Cyclic Voltammetry (FSCV). In addition, this IC with an integrated transformer suggests that a wireless electroanalytical system on a chip can be achieved as a future work. English 대한전자공학회 An Integrated Circuit for Biphasic Pulse Generator with Variable Parameters Article 10.5573/JSTS.2021.21.4.286 1 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE, v.21, no.4, pp.286 - 291 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE 21 4 286 291 N scie scopus kci 000780231900007 Engineering, Electrical & Electronic Physics, Applied Engineering Physics Article Biphasic pulses signal generator demodulation neural prosthesis potentiostat