LMC6572BIM National Semiconductor, LMC6572BIM Datasheet - Page 10

• Manufacturer Part Number: LMC6572BIM
• Description: IC, OP AMP, DUAL, 8SOIC
• Manufacturer: National Semiconductor

Specifications of LMC6572BIM

• Op Amp Type: Low Voltage
• No. Of Amplifiers: 2
• Bandwidth: 220kHz
• Slew Rate: 0.09V/µs
• Supply Voltage Range: 2.7V To 11V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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Applications Hints
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
insulator. Air is an excellent insulator. In this case you may
have to forego some of the advantages of PC board con-
FIGURE 3. Example of Guard Ring in P.C. Board
FIGURE 4. Typical Connections of Guard Rings
Non-Inverting Amplifier
Inverting Amplifier
Follower
Layout
(Continued)
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struction, but the advantages are sometimes well worth the
effort of using point-to-point up-in-the-air wiring. See Figure
5.
(Input pins are lifted out of PC board and soldered directly to components.
All other pins connected to PC board).
5.0 SPICE MACROMODEL
A spice macromodel is available for the LMC6574/2. This
model includes accurate simulation of:
• input common-mode voltage range
• frequency and transient response
• GBW dependence on loading conditions
• quiescent and dynamic supply current
• output swing dependence on loading conditions
and many more characteristics as listed on the macromodel
disk.
Contact your local National Semiconductor sales office to
obtain an operational amplifier spice model library disk.
Typical Single-Supply Applications
FIGURE 6. Low-Power Two-Op-Amp
FIGURE 7. Sample and Hold
Instrumentation Amplifier
FIGURE 5. Air Wiring
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