Abstract
With the purpose of detecting heart diseases, electrocardiogram monitor is created, which records the micro electrical activity of the heart muscle. In the paper, a two stage amplifier is design to amplify the signal in a observable level. It is based on CMOS of TSMC 0.18 μm technology with 1.8 V supply voltage. The total gain Direct Current (DC) gain is around 87 dB and -3dB bandwidth is about 3000Hz. After adding a 0.1 pF compensation capacitor, the phase margin obtained is 91.57°. Also, the total current consumption of the amplifier is less than 6 μm, which is 5.21 μm. Please note that the simulation and analysis is operated on Coolspice Software. This two stage amplifier could be an alternative choice applied in the ECG monitor in order to increase the performance of the wave interpretation.
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