چکیده مقاله
Considering the different components of the medical sensors, the low noise amplifier is the most important part Operational Transconductance Amplifier OTA can be highlighted as one of the main blocks of analog circuits that can reduce power consumption In this paper, OTA circuit design of a two stage and a current mirror, low power, low noise amplifier has been discussed Also a comparison between current mirror and two stage OTA is presented These circuits are designed with 0 13 um CMOS technology, and in order to verify design performance, HSPICE is used to simulate the results Gain of the two stage amplifier is about 30 dB and input referred noise can be measured as 52nv/√hz While current mirror amplifier gain is 67 dB and input referred noise is about 186nv/√hz Both amplifiers are suitable for medical signals because of having a high DC gain, low power consumption and low noise By comparing parameters of two amplifiers, some parameters in current mirror are better than two stage and vice versa So considering the amplifier application, current mirror or other two stage amplifiers may be used
کلیدواژهها
نویسندگان
Shaghayegh aslanzadeh
Master student, Shahid Rajaee Teacher Training University, Shabanlou st Lavizan Tehran, Iran
Ava Hedayatipour
Master student, Shahid Rajaee Teacher Training University, Shabanlou st Lavizan Tehran, Iran
Parviz Amiri
Assistant professor, Shahid Rajaee Teacher Training University, Shabanlou st Lavizan Tehran, Iran
شیوه ارجاع
aslanzadeh, Shaghayegh and Hedayatipour, Ava and Amiri, Parviz,1394,Current Mirror versus Two-Stage CMOS Amplifier: Noise-Power Trade-Off,International Conference on New Research Findings in Electrical Engineering and Computer Science,Tehran
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