LMC662AIM/NOPB National Semiconductor, LMC662AIM/NOPB Datasheet - Page 9

• Manufacturer Part Number: LMC662AIM/NOPB
• Description: IC OP AMP DUAL CMOS 8-SOIC
• Manufacturer: National Semiconductor

Specifications of LMC662AIM/NOPB

• Amplifier Type: General Purpose
• Number Of Circuits: 2
• Output Type: Rail-to-Rail
• Slew Rate: 1.1 V/µs
• Gain Bandwidth Product: 1.4MHz
• Current - Input Bias: 0.002pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 750µA
• Current - Output / Channel: 40mA
• Voltage - Supply, Single/dual (±): 4.75 V ~ 15.5 V, ±2.38 V ~ 7.75 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Bandwidth: 1.4 MHz
• Channel Separation: 130
• Common Mode Rejection Ratio: 83
• Current, Input Bias: 0.002 pA
• Current, Input Offset: 0.001 pA
• Current, Output: 40 mA
• Current, Supply: 0.75 mA
• Harmonic Distortion: 0.01 %
• Impedance, Thermal: 165 °C/W
• Number Of Amplifiers: Dual
• Package Type: SO-8
• Resistance, Input: 1 Teraohms
• Temperature, Operating, Range: -40 to +85 °C
• Voltage, Gain: 2000 V/mV
• Voltage, Input: 4.75 to 15.5 V
• Voltage, Noise: 22 nV/sqrt Hz
• Voltage, Offset: 1 mV
• Voltage, Output, High: 14.63 V
• Voltage, Output, Low: 0.26 V
• Voltage, Supply: 5 V
• Number Of Channels: 2
• Voltage Gain Db: 126.02 dB
• Common Mode Rejection Ratio (min): 70 dB
• Input Voltage Range (max): 15.5 V
• Input Voltage Range (min): 4.75 V
• Input Offset Voltage: 3 mV at 5 V
• Operating Supply Voltage: 5 V, 9 V, 12 V, 15 V
• Supply Current: 1.3 mA at 5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• -3db Bandwidth: -
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device
• Other names: *LMC662AIM/NOPB

Application Hints
dard op-amp configurations. If both inputs are active and at
high impedance, the guard can be tied to ground and still
provide some protection; see Figure 9.
FIGURE 7. Guard Ring Connections: Non-Inverting
FIGURE 6. Guard Ring Connections: Inverting
FIGURE 5. Example, using the LMC660,
of Guard Ring in P.C. Board Layout
Amplifier
Amplifier
(Continued)
00976317
00976316
00976318
9
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-
struction, but the advantages are sometimes well worth the
effort of using point-to-point up-in-the-air wiring. See Figure
10.
(Input pins are lifted out of PC board and soldered directly to components.
All other pins connected to PC board.)
FIGURE 9. Guard Ring Connections: Howland Current
FIGURE 8. Guard Ring Connections: Follower
FIGURE 10. Air Wiring
Pump
www.national.com
00976319
00976320
00976321