NSC LM318N, LM318MX, LM318M, LM318H, LM118J-883 Datasheet
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August 2000
LM118/LM218/LM318
Operational Amplifiers
General Description
The LM118 series are precision high speed operational am plifiers 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 compen sation. This considerably simplifies its application since no external components are necessary for operation. However, unlike most internally compensated amplifiers, external fre quency compensation may be added for optimum perfor mance. For inverting applications, feedforward compensa tion 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 re duce 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 mag nitude 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 tem perature range. The LM318 is specified from 0˚C to +70˚C.
Features
n15 MHz small signal bandwidth
nGuaranteed 50V/µs slew rate
nMaximum bias current of 250 nA
nOperates from supplies of ±5V to ±20V
nInternal frequency compensation
nInput and output overload protected
nPin compatible with general purpose op amps
Fast Voltage Follower
(Note 1)
DS007766-13
Note 1: Do not hard-wire as voltage follower (R1 ≥ 5 kΩ)
Amplifiers Operational LM118/LM218/LM318
© 2000 National Semiconductor Corporation |
DS007766 |
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LM118/LM218/LM318
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 |
±20V |
Power Dissipation (Note 2) |
500 mW |
Differential Input Current (Note 3) |
±10 mA |
Input Voltage (Note 4) |
±15V |
Output Short-Circuit Duration |
Continuous |
Operating Temperature Range |
|
LM118 |
−55˚C to +125˚C |
LM218 |
−25˚C to +85˚C |
LM318 |
0˚C to +70˚C |
Storage Temperature Range |
−65˚C to +150˚C |
Electrical Characteristics (Note 5)
Lead Temperature (Soldering, 10 sec.) |
|
Hermetic Package |
300˚C |
Plastic Package |
260˚C |
Soldering Information |
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Dual-In-Line Package |
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Soldering (10 sec.) |
260˚C |
Small Outline Package |
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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 |
Parameter |
Conditions |
LM118/LM218 |
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LM318 |
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Units |
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Min |
Typ |
Max |
Min |
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Typ |
Max |
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Input Offset Voltage |
TA = 25˚C |
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2 |
4 |
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4 |
10 |
mV |
Input Offset Current |
TA = 25˚C |
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6 |
50 |
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30 |
200 |
nA |
Input Bias Current |
TA = 25˚C |
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120 |
250 |
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150 |
500 |
nA |
Input Resistance |
TA = 25˚C |
1 |
3 |
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0.5 |
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3 |
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MΩ |
Supply Current |
TA = 25˚C |
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5 |
8 |
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5 |
10 |
mA |
Large Signal Voltage Gain |
TA = 25˚C, VS = ±15V |
50 |
200 |
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25 |
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200 |
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V/mV |
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VOUT = ±10V, RL ≥ 2 kΩ |
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Slew Rate |
TA = 25˚C, VS = ±15V, AV = 1 |
50 |
70 |
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50 |
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70 |
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V/µs |
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(Note 6) |
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Small Signal Bandwidth |
TA = 25˚C, VS = ±15V |
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15 |
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15 |
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MHz |
Input Offset Voltage |
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6 |
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15 |
mV |
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Input Offset Current |
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100 |
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300 |
nA |
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Input Bias Current |
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500 |
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750 |
nA |
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Supply Current |
TA = 125˚C |
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4.5 |
7 |
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mA |
Large Signal Voltage Gain |
VS = ±15V, VOUT = ±10V |
25 |
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20 |
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V/mV |
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RL ≥ 2 kΩ |
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Output Voltage Swing |
VS = ±15V, RL = 2 kΩ |
±12 |
±13 |
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±12 |
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±13 |
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V |
Input Voltage Range |
VS = ±15V |
±11.5 |
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±11.5 |
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V |
Common-Mode Rejection Ratio |
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80 |
100 |
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70 |
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100 |
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dB |
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Supply Voltage Rejection Ratio |
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70 |
80 |
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65 |
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80 |
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dB |
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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 ±15V, the absolute maximum input voltage is equal to the supply voltage.
Note 5: These specifications apply for ±5V ≤ VS ≤ ±20V and −55˚C ≤ TA ≤ +125˚C (LM118), −25˚C ≤ TA ≤ +85˚C (LM218), and 0˚C ≤ TA ≤ +70˚C (LM318). Also, power supplies must be bypassed with 0.1 µF disc capacitors.
Note 6: Slew rate is tested with VS = ±15V. The LM118 is in a unity-gain non-inverting configuration. VIN is stepped from −7.5V to +7.5V and vice versa. The slew 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.
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2 |
Typical Performance Characteristics LM118, LM218
Input Current |
Voltage Gain |
Power Supply Rejection |
DS007766-25 DS007766-26 DS007766-27
Input Noise Voltage Common Mode Rejection Supply Current
DS007766-28 DS007766-29 DS007766-30
Closed Loop Output |
Current Limiting |
Input Current |
Impedance |
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DS007766-32 |
DS007766-33 |
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DS007766-31 |
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Unity Gain Bandwidth |
Voltage Follower Slew Rate |
Inverter Settling Time |
DS007766-34 |
DS007766-35 |
DS007766-36 |
LM118/LM218/LM318
3 |
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LM118/LM218/LM318
Typical Performance Characteristics LM118, LM218 (Continued)
Large Signal Frequency |
Open Loop Frequency |
Voltage Follower Pulse |
Response |
Response |
Response |
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DS007766-37 |
DS007766-38 |
DS007766-39 |
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Large Signal Frequency |
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Open Loop Frequency |
Inverter Pulse Response |
Response |
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Response |
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DS007766-42
DS007766-40
DS007766-41
Typical Performance Characteristics LM318
Input Current |
Voltage Gain |
Power Supply Rejection |
DS007766-43 |
DS007766-44 |
DS007766-45 |
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4 |
Typical Performance Characteristics LM318 (Continued)
Input Noise Voltage |
Common Mode Rejection |
Supply Current |
DS007766-46 DS007766-47 DS007766-48
Closed Loop Output Impedance Current Limiting Input Current
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DS007766-50 |
DS007766-51 |
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DS007766-49 |
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Unity Gain Bandwidth |
Voltage Follower Slew Rate |
Inverter Settling Time |
DS007766-52 |
DS007766-53 |
DS007766-54 |
LM118/LM218/LM318
5 |
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