(IV) A specialist sensor is being used to detect the pollution being emitted from an engine. The true signal is in the range of 30-50mV DC but is being affected by 800HZ AC noise from the electronic...

Extracted text: (IV) A specialist sensor is being used to detect the pollution being emitted from an engine. The true signal is in the range of 30-50mV DC but is being affected by 800HZ AC noise from the electronic engine controller. Design a modular system consisting of a filter (that removes the noise) and an op-amp based amplifier (that increases the signal to a range of 3-5V DC) (V) The op-amp used in part (iv) above has an open-loop (i.e. without feedback) gain-frequency graph as shown below. 100000 10000 1000 100 10 1 10 100 1000 10000 100000 1000000 10000000 Frequency (H2) Voltage Gain, Av (Vout/Vin)