Datasheet LM318N, LM318MX, LM318M, LM318H, LM118J-883 Datasheet (NSC)

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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Typical Performance Characteristics LM318 (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

Auxiliary Circuits

Feedforward Compensation

for Greater Inverting Slew Rate

(Note 9)

*

Balance circuit necessary for increased slew.

Note 9: Slew rate typically 150V/µs.

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Compensation for Minimum Settling Time

(Note 10)

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Note 10: Slew and settling time to 0.1% for a 10V step change is 800 ns.

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Auxiliary Circuits (Continued)

LM118/LM218/LM318

Offset Balancing

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Typical Applications

Fast Voltage Follower

(Note 11)

Isolating Large Capacitive Loads

Integrator or Slow Inverter

Overcompensation

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Note 11: Do not hard-wire as voltage follower (R1 ≥ 5kΩ)

Fast Summing Amplifier

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CF = Large

≥ 50 pF)

(C

F

*

Do not hard-wire as integrator or slow inverter; insert a 10k-5 pF network

in series with the input, to prevent oscillation.

Differential Amplifier

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Typical Applications (Continued)

LM118/LM218/LM318

Fast Sample and Hold

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D/A Converter Using Ladder Network

*

Optional — Reduces settling time.

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Typical Applications (Continued)

LM118/LM218/LM318

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Four Quadrant Multiplier

Full scale adjust.

“Y” zero

‡

*

ΔOutput zero.

+“X” zero

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Typical Applications (Continued)

D/A Converter Using Binary Weighted Network

LM118/LM218/LM318

*

Optional — Reduces settling time.

Wein Bridge Sine Wave Oscillator

Fast Summing Amplifier with Low Input Current

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Instrumentation Amplifier

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Schematic Diagram

LM118/LM218/LM318

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Connection Diagram

LM118/LM218/LM318

Order Number LM118J/883 (Note 13)

See NS Package Number J14A

Dual-In-Line Package

Top View

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Metal Can Package

(Note 12)

Dual-In-Line Package

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Top View

Order Number LM118J-8/883 (Note 13),

LM318M or LM318N

See NS Package Number J08A, M08A or N08B

Top View

Order Number LM118H, LM118H/883 (Note 13),

LM218H or LM318H

See NS Package Number H08C

Note 12: Pin connections shown on schematic diagram and typical applications are for TO-5 package.
Note 13: Available per JM38510/10107.

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Physical Dimensions inches (millimeters) unless otherwise noted

LM118/LM218/LM318

Metal Can Package (H)

Order Number LM118H, LM118H/883, LM218H or LM318H

NS Package Number H08C

Ceramic Dual-In-Line Package (J)

Order Number LM118J-8/883

NS Package Number J08A

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

LM118/LM218/LM318

Ceramic Dual-In-Line Package (J)

Order Number LM118J/883

NS Package Number J14A

S.O. Package (M)

Order Number LM318M or LM318MX

NS Package Number M08A

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

LM118/LM218/LM318 Operational Amplifiers

Molded Dual-In-Line Package (N)

Order Number LM318N

NS Package Number N08E

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