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부품번호 | LM318 기능 |
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기능 | Operational Amplifiers | ||
제조업체 | National Semiconductor | ||
로고 | |||
전체 15 페이지수
March 1998
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
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
Connection Diagram
Dual-In-Line Package
Dual-In-Line Package
DS007766-24
Top View
Order Number LM118J/883 (Note 2)
See NS Package Number J14A
DS007766-3
Top View
Order Number LM118J-8/883 (Note 2),
LM318M or LM318N
See NS Package Number J08A, M08A or N08B
© 1999 National Semiconductor Corporation DS007766
www.national.com
Typical Performance Characteristics LM118, LM218
Input Current
Voltage Gain
Power Supply Rejection
Input Noise Voltage
DS007766-25
DS007766-26
Common Mode Rejection
Supply Current
DS007766-27
Closed Loop Output
Impedance
DS007766-28
Current Limiting
DS007766-29
Input Current
DS007766-30
DS007766-31
Unity Gain Bandwidth
DS007766-32
Voltage Follower Slew Rate
DS007766-33
Inverter Settling Time
www.national.com
DS007766-34
DS007766-35
4
DS007766-36
4페이지 Typical Performance Characteristics LM318 (Continued)
Large Signal Frequency
Response
Open Loop Frequency
Response
Voltage Follower Pulse
Response
DS007766-55
Large Signal Frequency
Response
DS007766-56
Open Loop Frequency
Response
DS007766-57
Inverter Pulse Response
DS007766-58
Auxiliary Circuits
Feedforward Compensation
for Greater Inverting Slew Rate
(Note 10)
DS007766-59
DS007766-60
Compensation for Minimum Settling Time
(Note 11)
*Balance circuit necessary for increased slew.
Note 10: Slew rate typically 150V/µs.
DS007766-8
DS007766-9
Note 11: Slew and settling time to 0.1% for a 10V step change is 800 ns.
7 www.national.com
7페이지 | |||
구 성 | 총 15 페이지수 | ||
다운로드 | [ LM318.PDF 데이터시트 ] |
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