P. Raghupathi and Dr. P. Sukumar 2018. Wide voltage range SRAM cell for low-energy using operation low power (OTA) low pass filter for ECG detection . International journal of intellectual advancements and research in engineering computations. 6, 1 (Mar. 2018), 274–279. DOI:https://doi.org/10.61096/ijiarec.v6.iss1.2018.274-279.