Application Information (Continued)
01171328
FIGURE 14. Operating from the same
Supply Voltage, the LMC6482 buffers the
ADC12038 maintaining excellent accuracy
10.0 INSTRUMENTATION CIRCUITS
these features include analytic medical instruments, mag-
netic field detectors, gas detectors, and silicon-based
tranducers.
The LMC6482 has the high input impedance, large common-
mode range and high CMRR needed for designing instru-
mentation circuits. Instrumentation circuits designed with the
LMC6482 can reject a larger range of common-mode signals
than most in-amps. This makes instrumentation circuits de-
signed with the LMC6482 an excellent choice of noisy or
industrial environments. Other applications that benefit from
A small valued potentiometer is used in series with Rg to set
the differential gain of the 3 op-amp instrumentation circuit in
Figure 15. This combination is used instead of one large
valued potentiometer to increase gain trim accuracy and
reduce error due to vibration.
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