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LF411
Low Offset, Low Drift JFET Input Operational Amplifier
General Description
Features
These devices are low cost, high speed, JFET input operational amplifiers with very low input offset voltage and guaranteed input offset voltage drift. They require low supply current yet maintain a large gain bandwidth product and fast
slew rate. In addition, well matched high voltage JFET input
devices provide very low input bias and offset currents. The
LF411 is pin compatible with the standard LM741 allowing
designers to immediately upgrade the overall performance of
existing designs.
Internally trimmed offset voltage: 0.5 mV(max)
Input offset voltage drift: 10 µV/˚C(max)
Low input bias current: 50 pA
Low input noise current:
Wide gain bandwidth: 3 MHz(min)
High slew rate: 10V/µs(min)
Low supply current: 1.8 mA
High input impedance: 1012Ω
Low total harmonic distortion AV = 10,
RL = 10k, VO = 20 Vp-p, BW = 20 Hz−20 kHz: < 0.02%
n Low 1/f noise corner: 50 Hz
n Fast settling time to 0.01%: 2 µs
These amplifiers may be used in applications such as high
speed integrators, fast D/A converters, sample and hold circuits and many other circuits requiring low input offset voltage and drift, low input bias current, high input impedance,
high slew rate and wide bandwidth.
Typical Connection
n
n
n
n
n
n
n
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n
Connection Diagrams
Metal Can Package
DS005655-5
Note: Pin 4 connected to case.
DS005655-1
Ordering Information
Top View
Order Number LF411ACH
or LF411MH/883 (Note 1)
See NS Package Number H08A
Dual-In-Line Package
LF411XYZ
X indicates electrical grade
Y indicates temperature range
“M” for military
“C” for commercial
Z indicates package type
“H” or “N”
DS005655-7
Top View
Order Number LF411ACN,
LF411CN or LF411MJ/883 (Note 1)
See NS Package Number N08E or J08A
BI-FET II™ is a trademark of National Semiconductor Corporation.
© 1999 National Semiconductor Corporation
DS005655
www.national.com
LF411 Low Offset, Low Drift JFET Input Operational Amplifier
April 1998
Simplified Schematic
DS005655-6
Note 1: Available per JM38510/11904
www.national.com
2
Absolute Maximum Ratings (Note 2)
Tjmax
θ jA
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
LF411A
± 22V
± 38V
Supply Voltage
Differential Input Voltage
Input Voltage Range
(Note 3)
Output Short Circuit
Duration
LF411
± 18V
± 30V
± 19V
± 15V
Continuous
Continuous
H Package
N Package
670 mW
670 mW
Power Dissipation
(Notes 4, 11)
DC Electrical Characteristics
Symbol
θjC