LPC660IN National Semiconductor, LPC660IN Datasheet - Page 11

• Manufacturer Part Number: LPC660IN
• Description: IC OPAMP LOW PWR CMOS QUAD 14DIP
• Manufacturer: National Semiconductor

Specifications of LPC660IN

• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Output Type: Rail-to-Rail
• Slew Rate: 0.11 V/µs
• Gain Bandwidth Product: 350kHz
• Current - Input Bias: 0.002pA
• Voltage - Input Offset: 1000µV
• Current - Supply: 160µA
• 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: Through Hole
• Package / Case: 14-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• -3db Bandwidth: -
• Other names: *LPC660IN

Application 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-
(Continued)
FIGURE 5. Guard Ring Connections
(b) Non-Inverting Amplifier
(d) Howland Current Pump
(a) Inverting Amplifier
(c) Follower
11
struction, but the advantages are sometimes well worth the
effort
See Figure 6.
of
using
01054720
01054723
01054722
01054721
point-to-point
up-in-the-air
www.national.com
wiring.