Suppose we need an amplifier with input resistance of 500 kO or greater and a voltage gain of -10. The feedback resistors are to be implemented in integrated form and have values of 10 kO or less to conserve chip area. Assume any amplifiers used are ideal.
a. Prove and explain why a single inverting op amp will not work for this design
b. Choose a suitable circuit configuration and specify the resistance values (hint: use cascaded op amps!)