LF412 Low Offset, Low Drift Dual JFET Input Operational Amplifier
August 2000
LF412
Low Offset, Low Drift Dual JFET Input Operational
Amplifier
General Description
These devices are low cost, high speed, JFET input opera-
tional amplifiers with very low input offset voltage and guar-
anteed 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
LF412 dual is pin compatible with the LM1558, allowing
designers to immediately upgrade the overall performance of
existing designs.
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 imped-
ance, high slew rate and wide bandwidth.
Features
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Internally trimmed offset voltage: 1 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/Amplifier
High input impedance: 10
12
Ω
Low total harmonic distortion
≤0.02%
Low 1/f noise corner: 50 Hz
Fast settling time to 0.01%: 2 µs
Typical Connection
Connection Diagrams
Metal Can Package
00565642
00565641
Ordering Information
LF412XYZ
X
indicates electrical grade
Y
indicates temperature range
“M” for military
“C” for commercial
Z
indicates package type
“H” or “N”
Order Number LF412MH, LF412CH
or LF412MH/883
See NS Package Number H08A
Dual-In-Line Package
00565644
Order Number LF412ACN, LF412CN
or LF412MJ/883
See NS Package Number J08A or N08E
BI-FET II
™
is a trademark of National Semiconductor Corporation.
© 2004 National Semiconductor Corporation
DS005656
www.national.com
NSC [ NATIONAL SEMICONDUCTOR ]
