Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 1 이규락 생체의공학과 2010103805 이규락.

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Operational Amplifiers

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Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 1 이규락 생체의공학과 이규락

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 2 이규락 P Q S R T  심전도의 측정 1) 최대 5mV +-5mV range 2) BW(Band Width) : Hz 3) DC contact potential : +-300mV 4) Contact impedance : 10kΩ ( 잡음이 많을 때, 줄어주면 좋다. 젤, 각질제거 등 )

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 3 이규락  전원 및 소자 1) ADC 입력범위 : +-5V 2) 전원 : +-5V 3) OPT Amp : +-6V 에서 saturation 60Hz power line V ecq LA RA RL

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 4 이규락 Differential input/ Differential output Differential Amp High-pass Filter Non-inverting Amp with Low-pass Filter

Dept. of Biomed. Eng.BME302: Medical InstrumentationKyung Hee Univ. 5 이규락 300mV 떠있는 경우에도 Op Amp 가 포화되지 않도록 증폭을 잘 조절한다. V3 4.5V 4.575V (4.5V+15X5mV) R 5 C 1 =3.3 V4 75mV Nonivnerting V 4 에서 1000/15( 약 67 배 ) 증폭 V5 5V LPF, C 2 =8μF