shows abbreviated data for some common types of integrated circuit operational amplifier together with some typical applications.
Table 11.2
Some common examples of integrated circuit operation
Example 11.5
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.
Solution
(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).
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