A 0.5v Bulk-driven Operational Trans Conductance Amplifier for Detecting Qrs Complex in Ecg Signal
نویسنده
چکیده
An effective current scaling method with source degenerated resistors proposed in the design of Bulk-Driven Folded-Cascode (BDFC) amplifier. The transconductance of the amplifier significantly vary with the common mode voltage. A 0.5V efficient Band Pass Filter (BPF) using bulk driven Operational Trans conductance amplifier (OTA) is designed for detection of QRS complex in ECG signal 17Hz. A low voltage bulk-driven OTA with the proposed current scaling technique has been implemented in a Standard UMC180nm CMOS technology. The OTA consumes 620nW from a 500-mV supply voltage. The measured dc gain is 58.4dB and the 3 dB bandwidth is 282.16 KHz when the OTA is loaded with 1 pF.
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