LMC6464BIM/NOPB National Semiconductor, LMC6464BIM/NOPB Datasheet - Page 14

• Manufacturer Part Number: LMC6464BIM/NOPB
• Description: IC OP AMP QUAD MICPWR R-R 14SOIC
• Manufacturer: National Semiconductor
• Type: General Purpose Amplifierr

Specifications of LMC6464BIM/NOPB

• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Rail-to-Rail
• Slew Rate: 0.028 V/µs
• Gain Bandwidth Product: 50kHz
• Current - Input Bias: 0.15pA
• Voltage - Input Offset: 250µV
• Current - Supply: 90µA
• Current - Output / Channel: 75mA
• Voltage - Supply, Single/dual (±): 3 V ~ 15.5 V, ±1.5 V ~ 7.75 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Rail/rail I/o Type: Rail to Rail Input/Output
• Number Of Elements: 4
• Unity Gain Bandwidth Product: 0.05MHz
• Common Mode Rejection Ratio: 65dB
• Input Offset Voltage: 3mV
• Input Bias Current: 150fA
• Single Supply Voltage (typ): 5/9/12/15V
• Dual Supply Voltage (typ): Not RequiredV
• Voltage Gain In Db: 129.54dB
• Power Supply Rejection Ratio: 65dB
• Power Supply Requirement: Single
• Shut Down Feature: No
• Single Supply Voltage (min): 3V
• Single Supply Voltage (max): 15.5V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Technology: CMOS
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 14
• Package Type: SOIC N
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: Compliant
• Other names: *LMC6464BIM; LMC6464BIM

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Application Information
(Input pins are lifted out of PC board and soldered directly to components.
All other pins connected to PC board.)
A two op-amp instrumentation amplifier designed for a gain
of 100 is shown in Figure 15. Low sensitivity trimming is
made for offset voltage, CMRR and gain. Low cost and low
power consumption are the main advantages of this two
op-amp circuit.
FIGURE 13. Air Wiring
FIGURE 14. Low Power Three Op-Amp Instrumentation Amplifier
(Continued)
01205119
14
8.0 INSTRUMENTATION CIRCUITS
The LMC6464 has the high input impedance, large common-
mode range and high CMRR needed for designing instru-
mentation circuits. Instrumentation circuits designed with the
LMC6464 can reject a larger range of common-mode signals
than most in-amps. This makes instrumentation circuits de-
signed with the LMC6464 an excellent choice for noisy or
industrial environments. Other applications that benefit from
these features include analytic medical instruments, mag-
netic field detectors, gas detectors, and silicon-based trans-
ducers.
A small valued potentiometer is used in series with R
the differential gain of the three op-amp instrumentation
circuit in Figure 14. This combination is used instead of one
large valued potentiometer to increase gain trim accuracy
and reduce error due to vibration.
Higher frequency and larger common-mode range applica-
tions are best facilitated by a three op-amp instrumentation
amplifier.
01205120
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