LMC6041AIM National Semiconductor, LMC6041AIM Datasheet - Page 8

• Manufacturer Part Number: LMC6041AIM
• Description: IC, OP-AMP, 75KHZ, 0.02V/µs, SOIC-8
• Manufacturer: National Semiconductor

Specifications of LMC6041AIM

• Op Amp Type: Low Power
• No. Of Amplifiers: 1
• Bandwidth: 75kHz
• Slew Rate: 0.02V/µs
• Supply Voltage Range: 4.5V To 15.5V
• Amplifier Case Style: SOIC
• No. Of Pins: 8
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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Typical Performance Characteristics
Applications Hints
AMPLIFIER TOPOLOGY
The LMC6041 incorporates a novel op-amp design topology
that enables it to maintain rail-to-rail output swing even when
driving a large load. Instead of relying on a push-pull unity
gain output buffer stage, the output stage is taken directly
from the internal integrator, which provides both low output
impedance and large gain. Special feed-forward compensa-
tion design techniques are incorporated to maintain stability
over a wider range of operating conditions than traditional
micropower op-amps. These features make the LMC6041
both easier to design with, and provide higher speed than
products typically found in this ultra-low power class.
COMPENSATING FOR INPUT CAPACITANCE
It is quite common to use large values of feedback resis-
tance with amplifiers with ultra-low input current, like the
LMC6041.
Although the LMC6041 is highly stable over a wide range of
operating conditions, certain precautions must be met to
Inverting Small Signal
Pulse Response
Capacitive Load
Stability vs
(A
V
=
±
10)
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V
8
S
=
achieve the desired pulse response when a large feedback
resistor is used. Large feedback resistors and even small
values of input capacitance, due to transducers, photo-
diodes, and circuits board parasitics, reduce phase margins.
When high input impedance are demanded, guarding of the
LMC6041 is suggested. Guarding input lines will not only
reduce leakage, but lowers stray input capacitance as well.
(See Printed-Circuit-Board Layout for High Impedance
Work.)
±
7.5V, T
A
= 25˚C unless otherwise specified (Continued)
Capacitive Load
Stability vs
(A
V
= +1)
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