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DESIGN AND DEVELOPMENT OF MEDICAL ELECTRONIC ...

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OUT+5V_ISOC122uF3284+-IC1A1OPA2130+2.5VLocal AnalogGro undNotes:Components marked * must be matchedwithin 0.5%.1516IC 2BMAX39214+5V_ISOIIC 2CMAX392C233nF*R422.1K*R8*C515nFR51MR656.231827IC3INA1286R722.1K109C433nF11654-+8R344.2KIC1BOPA2130722.1K*C715nF6IC2DMAX3923IC 2AMAX392135R91M4 54+2.5V7 82 1IBLANKFigure 2.40 This intracardiac electrogram signal amplifier enables detection of evoked-response events from the heart soon after the deliveryof pacing or defibrillation pulses. A digital BLANK command is supplied just before the stimulus pulse is delivered to the heart. Thiscommand shorts the inputs of the instrumentation amplifier and changes the configuration of IC1B to an amplifier with a gain of zero.Recovery occurs within a few milliseconds after the blanking signal is released.R11MR21M*C33.3nF*C63.3nF+IN-IN94

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