Biopotential amplifiers are voltage amplifiers typically used in electrophysiological experiments to increase the amplitude of weak electrical signals of biological origin picked up by an electrode in contact with surrounding tissue. Design a biopotential amplifier for measuring neural signals that takes in voltage as its input and has an input impedance greater than 100 M, so as to avoid loading of the biopotential signal being measured. The output impedance of the amplifier should be sufficiently low to drive an external 2 k load with minimal distortion. The voltage gain should be greater than 1,000 over the signal frequency band in order to resolve low amplitude biopotential signals. The signal frequency band ranges from 0.1 Hz to 10 kHz, and the voltage gain should attenuate outside of this range in order to suppress noise and interference from unwanted signals and motion artifacts. You have a 3V battery available, and can use any number of opamps, resistors, and capacitors. 

As before, specify all component values and other parameters to quantify your design, and explain your reasoning behind design choices based on the specifications. You may find it useful to check the operation of your circuit and observe its behavior using an electronic simulator such as the Falstad Java applet with several circuit examples