Question 8.5: Which of the operational amplifiers in the table would be mo......
Which of the operational amplifiers in the table would be most suitable for each of the following applications:
(a) amplifying the low-level output from a piezoelectric vibration sensor
(b) a high-gain amplifier that can be used to faithfully amplify very small signals
(c) a low-frequency amplifier for audio signals.
(a) AD548 (this operational amplifier is designed for use in instrumentation applications and it offers a very low input offset current which is important when the input is derived from a piezoelectric transducer)
(b) CA3140 (this is a low-noise operational amplifier that also offers high gain and fast slew rate)
(c) LM348 or LM741 (both are general purpose operational amplifiers and are ideal for non-critical applications such as audio amplifiers).