LMC6484AIM National Semiconductor, LMC6484AIM Datasheet - Page 15

• Manufacturer Part Number: LMC6484AIM
• Description: Operational Amplifier (Op-Amp) IC
• Manufacturer: National Semiconductor

Specifications of LMC6484AIM

• No. Of Amplifiers: 4
• Slew Rate: 1.3V/µs
• No. Of Pins: 14
• Amplifier Type: Operational
• Mounting Type: Surface Mount
• Peak Reflow Compatible (260 C): No
• Leaded Process Compatible: No
• Number Of Channels: 4
• Voltage Gain Db: 116.47 dB
• Common Mode Rejection Ratio (min): 70 dB
• Input Offset Voltage: 0.75 mV at 5 V
• Operating Supply Voltage: 5 V, 9 V, 12 V, 15 V
• Supply Current: 2.8 mA at 5 V
• Maximum Operating Temperature: + 85 C
• Package / Case: SOIC-14 Narrow
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Application Information
10.0 Instrumentation Circuits
The LMC6484 has the high input impedance, large
common-mode range and high CMRR needed for designing
instrumentation circuits. Instrumentation circuits designed
with
common-mode signals than most in-amps. This makes in-
strumentation circuits designed with the LMC6484 an excel-
lent choice for noisy or industrial environments. Other appli-
the
LMC6484
can
reject
FIGURE 15. Low Power 3 Op-Amp Instrumentation Amplifier
a
ADC12038 maintaining excellent accuracy
(Continued)
Supply Voltage, the LMC6484 buffers the
larger
FIGURE 14. Operating from the same
range
of
15
cations that benefit from these features include analytic
medical instruments, magnetic field detectors, gas detectors,
and silicon-based transducers.
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 val-
ued potentiometer to increase gain trim accuracy and reduce
error due to vibration.
DS011714-29
DS011714-28
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