NSC LM318N, LM318MX, LM318M, LM318H, LM118J-883 Datasheet
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LM118/LM218/LM318
Operational Amplifiers
LM118/LM218/LM318 Operational Amplifiers
August 2000
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,
Fast Voltage Follower
(Note 1)
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
n Internal frequency compensation
n Input and output overload protected
n Pin compatible with general purpose op amps
±
5V to ±20V
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Note 1: Do not hard-wire as voltage follower (R1 ≥ 5kΩ)
© 2000 National Semiconductor Corporation DS007766 www.national.com
Absolute Maximum Ratings (Note 7)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Power Dissipation (Note 2) 500 mW
Differential Input Current (Note 3)
LM118/LM218/LM318
Input Voltage (Note 4)
Output Short-Circuit Duration Continuous
Operating Temperature Range
LM118 −55˚C to +125˚C
LM218 −25˚C to +85˚C
±
±
10 mA
±
20V
15V
Lead Temperature (Soldering, 10 sec.)
Hermetic Package 300˚C
Plastic Package 260˚C
Soldering Information
Dual-In-Line Package
Soldering (10 sec.) 260˚C
Small Outline Package
Vapor Phase (60 sec.) 215˚C
Infrared (15 sec.) 220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
ESD Tolerance (Note 8) 2000V
LM318 0˚C to +70˚C
Storage Temperature Range −65˚C to +150˚C
Electrical Characteristics (Note 5)
Parameter Conditions LM118/LM218 LM318 Units
Min Typ Max Min Typ Max
Input Offset Voltage T
Input Offset Current T
Input Bias Current T
Input Resistance T
Supply Current T
Large Signal Voltage Gain T
Slew Rate T
Small Signal Bandwidth T
Input Offset Voltage 6 5 mV
Input Offset Current 100 300 nA
Input Bias Current 500 750 nA
Supply Current T
Large Signal Voltage Gain V
Output Voltage Swing V
Input Voltage Range V
Common-Mode Rejection Ratio 80 100 70 100 dB
Supply Voltage Rejection Ratio 70 80 65 80 dB
Note 2: The maximum junction temperature of the LM118 is 150˚C, the LM218 is 110˚C, and the LM318 is 110˚C. For operating at elevated temperatures, devices
in the H08 package must be derated based on a thermal resistance of 160˚C/W, junction to ambient, or 20˚C/W, junction to case. The thermal resistance of the
dual-in-line package is 100˚C/W, junction to ambient.
Note 3: The inputs are shunted with back-to-back diodes for overvoltage protection. Therefore, excessive current will flow if a differential input voltage in excess of
1V is applied between the inputs unless some limiting resistance is used.
Note 4: For supply voltages less than
Note 5: These specifications apply for
power supplies must be bypassed with 0.1 µF disc capacitors.
Note 6: Slew rate is tested with V
rates between −5.0V and +5.0V and vice versa are tested and guaranteed to exceed 50V/µs.
Note 7: Refer to RETS118X for LM118H and LM118J military specifications.
Note 8: Human body model, 1.5 kΩ in series with 100 pF.
±
±
= ±15V. The LM118 is in a unity-gain non-inverting configuration. V
S
= 25˚C 2 4 4 10 mV
A
= 25˚C 6 50 30 200 nA
A
= 25˚C 120 250 150 500 nA
A
= 25˚C 1 3 0.5 3 MΩ
A
= 25˚C 5 8 5 10 mA
A
= 25˚C, VS = ±15V 50 200 25 200 V/mV
A
V
= ±10V, RL ≥ 2kΩ
OUT
= 25˚C, VS = ±15V, AV = 1 50 70 50 70 V/µs
A
(Note 6)
= 25˚C, VS = ±15V 15 15 MHz
A
1
= 125˚C 4.5 7 mA
A
= ±15V, V
S
R
≥ 2kΩ
L
= ±15V, RL =2 kΩ
S
= ±15V
S
15V, the absolute maximum input voltage is equal to the supply voltage.
5V ≤ VS ≤ ±20V and −55˚C ≤ TA ≤ +125˚C (LM118), −25˚C ≤ TA ≤ +85˚C (LM218), and 0˚C ≤ TA ≤ +70˚C (LM318). Also,
= ±10V 25 20 V/mV
OUT
±
±
11.5
12
±
13
is stepped from −7.5V to +7.5V and vice versa. The slew
IN
±
±
11.5 V
12
±
13 V
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Typical Performance Characteristics LM118, LM218
LM118/LM218/LM318
Input Current
Input Noise Voltage
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Voltage Gain
Common Mode Rejection
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Power Supply Rejection
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Supply Current
Closed Loop Output
Impedance
Unity Gain Bandwidth
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Current Limiting
Voltage Follower Slew Rate
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Input Current
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Inverter Settling Time
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Typical Performance Characteristics LM118, LM218 (Continued)
Large Signal Frequency
Response
LM118/LM218/LM318
Large Signal Frequency
Response
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Open Loop Frequency
Response
Open Loop Frequency
Response
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Voltage Follower Pulse
Response
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Inverter Pulse Response
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Typical Performance Characteristics LM318
Input Current
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Voltage Gain
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Power Supply Rejection
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Typical Performance Characteristics LM318 (Continued)
LM118/LM218/LM318
Input Noise Voltage
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Closed Loop Output Impedance
Common Mode Rejection
Current Limiting
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Supply Current
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Input Current
Unity Gain Bandwidth
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Voltage Follower Slew Rate
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Inverter Settling Time
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