LPC662IM National Semiconductor, LPC662IM Datasheet - Page 10
![no-image](/images/manufacturer_photos/0/4/469/national_semiconductor_sml.jpg)
LPC662IM
Manufacturer Part Number
LPC662IM
Description
OP AMP, DUAL CMOS, SMD, SOIC8, 662
Manufacturer
National Semiconductor
Datasheet
1.LPC662IM.pdf
(18 pages)
Specifications of LPC662IM
Op Amp Type
Low Input Bias
No. Of Amplifiers
2
Bandwidth
0.35MHz
Slew Rate
0.11V/µs
Supply Voltage Range
5V To 15V
Amplifier Case Style
SOIC
No. Of Pins
8
Operating Temperature Range
-40°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LPC662IM/NOPB
Manufacturer:
National Semiconductor
Quantity:
1 786
Company:
Part Number:
LPC662IMX
Manufacturer:
KEC
Quantity:
2 747
Company:
Part Number:
LPC662IMX/NOPB
Manufacturer:
NS
Quantity:
11
www.national.com
Application Hints
This would cause a 100 times degradation from the
LPC662’s actual performance. However, if a guard ring is
held within 5 mV of the inputs, then even a resistance of
10
perhaps a minor (2:1) degradation of the amplifier’s
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
11
ohms would cause only 0.05 pA of leakage current, or
(b) Non-Inverting Amplifier
(a) Inverting Amplifier
FIGURE 4. Example of Guard Ring in P.C. Board Layout, using the LPC660
(Continued)
FIGURE 5. Guard Ring Connections
DS010548-20
DS010548-21
10
performance. See Figure 5a , Figure 5b , Figure 5c for typical
connections
configurations. If both inputs are active and at high
impedance, the guard can be tied to ground and still provide
some protection; see Figure 5d .
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
(d) Howland Current Pump
of
DS010548-19
(c) Follower
guard
rings
for
DS010548-22
standard
DS010548-23
op-amp