LMC6024IM National Semiconductor, LMC6024IM Datasheet - Page 10

• Manufacturer Part Number: LMC6024IM
• Description: IC, OP-AMP, 350KHZ, 0.11V/µs, SOIC-14
• Manufacturer: National Semiconductor

Specifications of LMC6024IM

• Op Amp Type: Low Power
• No. Of Amplifiers: 2
• Bandwidth: 350kHz
• Slew Rate: 0.11V/µs
• Supply Voltage Range: 5V To 15V
• Amplifier Case Style: SOIC
• No. Of Pins: 14
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Application Hints
This would cause a 100 times degradation from the
LMC6024’s actual performance. However, if a guard ring is
held within 5 mV of the inputs, then even a resistance of 10
ohms would cause only 0.05 pA of leakage current, or per-
The designer should be aware that when it is inappropriate
to lay out a PC board for the sake of just a few circuits, there
is another technique which is even better than a guard ring
on a PC board: Don’t insert the amplifier’s input pin into the
board at all, but bend it up in the air and use only air as an
(b) Non-Inverting Amplifier
(a) Inverting Amplifier
FIGURE 4. Example of Guard Ring in P.C. Board Layout (Using the LMC6024)
(Continued)
FIGURE 5. Guard Ring Connections
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haps a minor (2:1) degradation of the amplifier’s perfor-
mance. See Figure 5a, Figure 5b, Figure 5c for typical
connections of guard rings for standard op-amp configura-
tions. If both inputs are active and at high impedance, the
guard can be tied to ground and still provide some protec-
tion; see Figure 5d.
insulator. Air is an excellent insulator. In this case you may
have to forego some of the advantages of PC board con-
struction, but the advantages are sometimes well worth the
effort of using point-to-point up-in-the-air wiring. See Figure
6.
(d) Howland Current Pump
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(c) Follower
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