TABLE A lists parameters for two different operational amplifiers, A and B.

1. a) Contrast the relative performance of each op-amp in terms of these parameters and state how they compare to that of the ideal op-amp.

b) TABLE B gives two descriptions of operational amplifiers. State, with justifications, which description most closely matches the op-amps of TABLE A.

c) State, with reasons, which op-amp in TABLE A would be most suitable for the applications listed in TABLE C.

d) TABLE D shows the internal circuitry of two op-amps. Identify, with justification, which op-amp circuit is most likely to belong to which op-amp in TABLE A.

2. The amplifier of FIGURE 1 has a closed loop gain of 20 dB and R₁ = 10 kΩ. The resistors have a tolerance of 5%.

a. Estimate the output offset voltage of the circuit of FIGURE 1 when the op-amp used is
i) op-amp A of TABLE A
ii) op-amp B of TABLE A.

Figure 1

3. a) Explain what is meant by ‘unconditional stability' in an op-amp.

b) FIGURE 2 gives the open-loop response of an uncompensated op- amp. Compensation is to be applied to the amplifier to make it unconditionally stable. Estimate the frequency at which the breakpoint of the compensated response must occur.

Figure 2

Attachment:- tables.rar