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LM118 pdf,LM118 datasheet (Ope
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2008-09-06
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LM118/LM218/LM318 Operational Amplifiers
General Description
The LM118 series are precision high speed operational amplifiers
designed for applications requiring wide bandwidth
and high slew rate. They feature a factor of ten increase in
speed over general purpose devices without sacrificing DC
performance.
The LM118 series has internal unity gain frequency compensation.
This considerably simplifies its application since no
external components are necessary for operation. However,
unlike most internally compensated amplifiers, external frequency
compensation may be added for optimum performance.
For inverting applications, feedforward compensation
will boost the slew rate to over 150V/μs and almost
double the bandwidth. Overcompensation can be used with
the amplifier for greater stability when maximum bandwidth
is not needed. Further, a single capacitor can be added to
reduce the 0.1% settling time to under 1 μs.
The high speed and fast settling time of these op amps make
them useful in A/D converters, oscillators, active filters,
sample and hold circuits, or general purpose amplifiers.
These devices are easy to apply and offer an order of
magnitude better AC performance than industry standards
such as the LM709.
The LM218 is identical to the LM118 except that the LM218
has its performance specified over a −25°C to +85°C temperature
range. The LM318 is specified from 0°C to +70°C.
Features
n 15 MHz small signal bandwidth
n Guaranteed 50V/μs slew rate
n Maximum bias current of 250 nA
n Operates from supplies of ±5V to ±20V
n Internal frequency compensation
n Input and output overload protected
n Pin compatible with general purpose op amps
General Description
The LM118 series are precision high speed operational amplifiers
designed for applications requiring wide bandwidth
and high slew rate. They feature a factor of ten increase in
speed over general purpose devices without sacrificing DC
performance.
The LM118 series has internal unity gain frequency compensation.
This considerably simplifies its application since no
external components are necessary for operation. However,
unlike most internally compensated amplifiers, external frequency
compensation may be added for optimum performance.
For inverting applications, feedforward compensation
will boost the slew rate to over 150V/μs and almost
double the bandwidth. Overcompensation can be used with
the amplifier for greater stability when maximum bandwidth
is not needed. Further, a single capacitor can be added to
reduce the 0.1% settling time to under 1 μs.
The high speed and fast settling time of these op amps make
them useful in A/D converters, oscillators, active filters,
sample and hold circuits, or general purpose amplifiers.
These devices are easy to apply and offer an order of
magnitude better AC performance than industry standards
such as the LM709.
The LM218 is identical to the LM118 except that the LM218
has its performance specified over a −25°C to +85°C temperature
range. The LM318 is specified from 0°C to +70°C.
Features
n 15 MHz small signal bandwidth
n Guaranteed 50V/μs slew rate
n Maximum bias current of 250 nA
n Operates from supplies of ±5V to ±20V
n Internal frequency compensation
n Input and output overload protected
n Pin compatible with general purpose op amps
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