AD OP-27 op-amp - Differential & instrumentation amplifiers

Q.  Which op-amp device serves to be an ideal application for differential as well as instrumentation amplifier?
- Published on 25 Sep 15

a. μA748
b. LM318
c. AD OP-27
d. None of the above

ANSWER: AD OP-27

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    Discussion

  • Satyawati Patil   -Posted on 09 Oct 15
    AD OP-27 is a low-level precision amplifier, in which an ultra low input voltage noise enhances the low frequency voltage inputs. The significant feature of AD OP-27 is that it can maintain the high the DC accuracy over a specified extended temperature range because of an ultra-low offset voltage, drift in offset voltage as well as input bias current.

    As AD OP-27 op-amp possesses the voltage drift of about 0.2 µV/C in addition to low noise precision, it provides an optimum suitability for instrumentation as well as differential amplifiers for low level applications.

    Apart from these, AD OP-27 op-amp exhibits better performance with peak-to-peak noise of only 80 nV especially when it is used with proper circuit layout.

    µA748 is similar to µA741 with slight modifications while LM318 is a high speed precision op-amp especially designed for wider bandwidth and high slew rate applications.

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